What altered states of consciousness—the dissolution of feelings of time and self—can tell us about the mystery of consciousness. During extraordinary moments of consciousness—shock, meditative states and sudden mystical revelations, out-of-body experiences, or drug intoxication—our senses of time and self are altered; we may even feel time and self dissolving. These experiences have long been ignored by mainstream science, or considered crazy fantasies. Recent research, however, has located the neural underpinnings of these altered states of mind. In this book, neuropsychologist (...) Marc Wittmann shows how experiences that disturb or widen our everyday understanding of the self can help solve the mystery of consciousness. Wittmann explains that the relationship between consciousness of time and consciousness of self is close; in extreme circumstances, the experiences of space and self intensify and weaken together. He considers the emergence of the self in waking life and dreams; how our sense of time is distorted by extreme situations ranging from terror to mystical enlightenment; the experience of the moment; and the loss of time and self in such disorders as depression, schizophrenia, and epilepsy. Dostoyevsky reported godly bliss during epileptic seizures; neurologists are now investigating the phenomenon of the epileptic aura. Wittmann describes new studies of psychedelics that show how the brain builds consciousness of self and time, and discusses pilot programs that use hallucinogens to treat severe depression, anxiety, and addiction. If we want to understand our consciousness, our subjectivity, Wittmann argues, we must not be afraid to break new ground. Studying altered states of consciousness leads us directly to the heart of the matter: time and self, the foundations of consciousness. (shrink)

An extended examination of Libet's works led to a comprehensive reinterpretation of his results. According to this reinterpretation, the Minimum Train Duration of electrical brain stimulation should be considered as the time needed to create a brain stimulus efficient for producing conscious sensation and not as a basis for inferring the latency for conscious sensation of peripheral origin. Latency for conscious sensation with brain stimulation may occurafterthe Minimum Train Duration. Backward masking with cortical stimuli suggests a 125-300 (...) ms minimum value for the latency for conscious sensation of threshold skin stimuli. Backward enhancement is not suitable for inferring this latency. For determining temporal relations between stimuli that correspond to subjects' reports, theendof cerebral Minimum Train Duration should be used as reference, rather than its onset. Results of coupling peripheral and cortical stimuli are explained by a latency after the cortical Minimum Train Duration, having roughly the same duration as the latency for supraliminal skin stimuli. Results of coupling peripheral stimuli and stimuli to medial lemniscus (LM) are explained by a shorter LM latency and/or a longer peripheral latency. This interpretation suggests a 230 ms minimum value for the latency for conscious sensation of somatosensory near-threshold stimuli. The backward referral hypothesis, as formulated by Libet, should not be retained. Long readiness potentials preceding spontaneous conscious or nonconscious movements suggest that both kinds of movement are nonconsciously initiated. The validity of Libet's measures of W and M moments (Libet et al., 1983a) is questionable due to problems involving latencies, training, and introspective distinction of W and M. Veto of intended actions may be initially nonconscious but dependent on conscious awareness. (shrink)

Libet's (2000) arguments in defense of his interpretation of his experimental results are insufficient. The claims of my critical review (Gomes, 2008) do not suffer with his new statements.

The temporal granularity of consciousness may be far less fine than the real-time information processing mechanisms that underlie our sensitivity to small temporal differences. It is suggested that conscious time perception, like space perception, is subject to errors that belie a unitary underlying representation. E. R. Clay's concept of the “specious present,” an extended moment represented in consciousness, is suggested as an alternative to the more common notion of instantaneous experience that underlies much reasoning based on the “time (...) of arrival” in consciousness. (shrink)

Discusses the nature of time, suggests a hierarchical model of human temporal experience, and proposes a new definition of consciousness.

In the absence of continuing selves or persons, Buddhist philosophers are under pressure to provide a systematic account of phenomenological and other features of conscious experience. Any such Buddhist account of experience, however, faces further problems because of another cardinal tenet of Buddhist revisionary metaphysics: the doctrine of impermanence, which during the Abhidharma period is transformed into the doctrine of momentariness. Setting aside the problems that plague the Buddhist Abhidharma theory of experience because of lack of (...) persons, I shall focus on problems that arise because of its allegiance to momentariness and explore some responses on behalf of the Abhidharma Buddhist philosophers. I address two challenges to the Buddhist view in this paper. The first, which I will call the “Phenomenological Challenge”, primarily concerns the temporal properties of what is represented in conscious experience. The second, which I will call the “Metaphysical Challenge”, concerns the temporal properties of conscious representation itself. (shrink)

This work offers a comprehensive picture of the dynamic natures of language and consciousness that will interest linguists, psychologists, literary scholars,...

On the B-theory of time, the experiences we have throughout our conscious lives have the same ontological status: they all tenselessly occur at their respective dates. But we do not seem to experience all of them on the same footing. In fact, we tend to believe that only our present experiences are real, to the exclusion of the past and future ones. The B-theorist has to maintain that this belief is an illusion and explain the origin of the (...) illusion. The paper argues that this cannot be properly done unless one rejects endurantism in favor of the stage view of persistence. (shrink)

_Stream of Consciousness_ is about the phenomenology of conscious experience. Barry Dainton shows us that stream of consciousness is not a mosaic of discrete fragments of experience, but rather an interconnected flowing whole. Through a deep probing into the nature of awareness, introspection, phenomenal space and time consciousness, Dainton offers a truly original understanding of the nature of consciousness.

States of Consciousness extends Thomas Natsoulas' development of the psychology of consciousness by giving sustained attention to the stream of consciousness and its component 'pulses of experience'. Natsoulas' unrivalled scholarship across psychology, philosophy and cognate fields means that very often surprising connections are made between the works of leading theorists of consciousness, including Brentano, Mead, Bergmann, Strawson, James, Freud, Skinner, Hebb, Gibson, O'Shaughnessy and Woodruff Smith. At a time when interest in consciousness and the brain is growing rapidly, this (...) book provides an in-depth analysis of sophisticated psychological accounts that pertain to consciousness. Its breadth of coverage and interdisciplinary nature will be of interest to postgraduates and specialists in a range of fields, particularly the history of psychology and philosophy of mind. (shrink)

The notion of collective conscious experience is here seen as an alternative or complement to themore familiar notion of individual conscious experience. Much evidence supports the concept of collective experience in the present. But what about time? Can a conscious experience which, whenregarded as individual, is referred to the past be considered a collectiveexperience extended in both past and present? My answer is yes, and this answer is supported by evidence about conceptions of (...) time and conscious experience in various cultures, including Western culture and science, and by evidence about the psychological Now. Egoless conscious experience is an alternative to both individual and collective experience; it is often connected with experience of timelessness, andis then unrestricted by time. (shrink)

Psychology was originally formulated as the science of the _psyche_, i.e. the subjective side of the mind / brain barrier. However time and again it has been diverted from this objective in the supposed interest of scientific rigor. The Behaviorists proposed to transform psychology to a science of behavior, and today the Neuroreductionists propose to transform it to a science of neurophysiology. In the process they attempt to deny the very existence of conscious experience as valid object of (...) scientific scrutiny. However the subjective conscious experience is a primary source of evidence for the nature of the representation in the brain. I propose a quantitative phenomenolgy to express the dimensions of conscious experience in information theoretic terms. This approach leads to interesting observations of the properties of phenomenal perspective, that clearly reveal the phenomenal world as an internal rather than external entity. (shrink)

The World In Your Head: A Gestalt View of the Mechanism of Conscious Experience represents a bold assault on one of the greatest unsolved mysteries in science: the nature of consciousness and the human mind. Rather than examining the brain and nervous system to see what they tell us about the mind, this book begins with an examination of conscious experience to see what it can tell us about the brain. Through this analysis, the first and (...) most obvious observation is that consciousness appears as a volumetric spatial void, containing colored objects and surfaces. This reveals that the representation in the brain takes the form of an explicit volumetric spatial model of external reality. Therefore, the world we see around us is not the real world itself, but merely a miniature virtual-reality replica of that world in an internal representation. In fact, the phenomena of dreams and hallucinations clearly demonstrate the capacity of the brain to construct complete virtual worlds even in the absence of sensory input. Perception is somewhat like a guided hallucination, based on sensory stimulation. This insight allows us to examine the world of visual experience not as scientists exploring the external world, but as perceptual scientists examining a rich and complex internal representation. This unique approach to investigating mental function has implications in a wide variety of related fields, including the nature of language and abstract thought, and motor control and behavior. It also has implications to the world of music, art, and dance, showing how the patterns of regularity and periodicity in space and time--apparent in those aesthetic domains--reflect the periodic basis set of the underlying harmonic resonance representation in the brain. (shrink)

In this paper, I argue that while supervenience accounts of mental causation in general have difficulty avoiding epiphenomenalism, the situation is particularly bad in the case of conscious experiences since the function-realizer relation, arguably present in the case of intentional properties, does not obtain, and thus, the metaphysical link between supervenient and subvenient properties is absent. I contend, however, that the identification of experiential types with their neural correlates dispels the spectre epiphenomenalism, squares nicely both with the phenomenology of (...) embodiment and the subjectivity of experience, and does not conflict with the supposed multiple realizability of consciousness. View HTML Send article to KindleTo send this article to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle. Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply. Find out more about the Kindle Personal Document Service.Consciousness, Supervenience, and Identity: Marras and Kim on the Efficacy of Conscious ExperienceVolume 51, Issue 3LIAM P. DEMPSEY DOI: https://doi.org/10.1017/S0012217312000662Your Kindle email address Please provide your Kindle [email protected]@kindle.com Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Send article to Dropbox To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Dropbox. Consciousness, Supervenience, and Identity: Marras and Kim on the Efficacy of Conscious ExperienceVolume 51, Issue 3LIAM P. DEMPSEY DOI: https://doi.org/10.1017/S0012217312000662Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Send article to Google Drive To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Google Drive. Consciousness, Supervenience, and Identity: Marras and Kim on the Efficacy of Conscious ExperienceVolume 51, Issue 3LIAM P. DEMPSEY DOI: https://doi.org/10.1017/S0012217312000662Available formats PDF Please select a format to send. By using this service, you agree that you will only keep articles for personal use, and will not openly distribute them via Dropbox, Google Drive or other file sharing services. Please confirm that you accept the terms of use. Cancel Send ×Export citation Request permission. (shrink)

In my dissertation I critically survey existing theories of time consciousness, and draw on recent work in neuroscience and philosophy to develop an original theory. My view depends on a novel account of temporal perception based on the notion of temporal qualities, which are mental properties that are instantiated whenever we detect change in the environment. When we become aware of these temporal qualities in an appropriate way, our conscious experience will feature the distinct temporal phenomenology that is (...) associated with the passing of time. The temporal qualities model of perception makes two predictions about the mechanisms of time perception; one that time perception is modality specific and the other that it can occur without awareness. My argument for this view partially depends on a number of psychophysical experiments that I designed and implemented myself and which investigate subjective time distortions caused by looming visual stimuli. These results show that the mechanisms of conscious experience of time are distinct from the mechanisms of time perception, as my theory of temporal qualities predicts. (shrink)

Neurophysiological and psychological evidence require us to see perception, the ‘fabrication of experience’, as a process in time. Some of the elapsed time between the onset of stimulation and the appearance of a conscious image is accounted for by onsiderations of neural hardware. Cognitive science conventionally assumes that these structural factors are sufficient to account for the delay. However I argue in this paper that the human information processing system may interpose an additional strategic delay that allows for (...) processes of checking and editing the developing ‘sketch’ or ‘draft’, so that elements that might threaten an underlying self system can be massaged or deleted. This cognitive model parallels that which is found in the Buddhist Abhidhamma, and improves upon the traditional, canonical formulation. Mindfulness meditation can be seen as a process of ‘attentional retraining’, in which the strategic delay is reduced through practice, and self-related assumptions, which had previously been dissolved in or pre-supposed by conscious experience, become crystallized out and capable of being problematized. (shrink)

This paper argues that Heidegger's phenomenology of boredom in The Fundamental Concepts of Metaphysics: World, Finitude, Solitude (1983) could be a promising addition to the ‘toolbox’ of scientists investigating conscious experience. We describe Heidegger's methodological principles and show how he applies these in describing three forms of boredom. Each form is shown to have two structural moments – being held in limbo and being left empty – as well as a characteristic relation to passing the time. In our (...) conclusion, we suggest specific ways in which Heidegger's phenomenological description can be used in scientific investigations of boredom. (shrink)

Context: The idea to write this paper sprang up in a casual conversation that led to the question of how the word “experience” would be translated into German. Distinctions between the German “Erleben” and “Erfahren,” and their intricacies with “Erkennen” and “Anerkennen,” soon led to the conviction that this was a thread worth pursuing. Problem: Much has been written about the nature of experience, but there is little consensus, to this day, regarding the role of consciousness in the (...) process of experiencing. Although RC acknowledges the significance of tacit or sensorimotor knowledge in the individual’s practical operating, it cannot admit it as a basis to the formation of conceptual structures that, by definition, are conscious. Method: Drawing from our backgrounds in epistemology and psychology, and a shared interest in Piaget’s psychogenetic approach, we investigate the origins and development of human experience, in this case the mastery of space, time, causation, and object-permanency. We focus on how “noticeable encounters” are gauged, reflected upon, and ultimately worked through, consciously or unconsciously, by the “experiencer.” Results: A child’s abilities to enact a certain action pattern in a given situation no more demonstrates a re-presentation of the pattern than does recognition in the case of objects. In his studies with children, Piaget has shown that the Kantian categories of space, time object, and “causality” are co-constitutive of the child’s own motion – and its felt impact – as a means to make the world cohere. Of importance here are the concepts of “effective causality,” felicitous encounters, and agency. Implications: Understanding the circumstances under which some “lived” events, whether self-initiated or striking as if out of nowhere, become noticeable and able affect a person’s life is a daunting task. This joint essay is no more than a conversation-starter and an invitation to further explore the intricacies between agency and causation, sensation and cognition, and, yes, motions and emotions in the making of consciousness itself. (shrink)

Intentional action involves both a series of neural events in the motor areas of the brain, and also a distinctive conscious experience that ''I'' am the author of the action. This paper investigates some possible ways in which these neural and phenomenal events may be related. Recent models of motor prediction are relevant to the conscious experience of action as well as to its neural control. Such models depend critically on matching the actual consequences of a (...) movement against its internally predicted effects. However, it remains unclear whether our conscious experience of action depends on a precise matching process, or a retrospective inference that ''I'' must have been responsible for a particular event. We report an experiment in which normal subjects judged the perceived time of either intentional actions, involuntary movements, or subsequent effects (auditory tones) of these. We found that the subject's intention to produce the auditory tone produced an intentional binding between the perceived times of the subject's action and the tone. However, if the intention was interrupted by an imposed involuntary movement, followed by the identical tone, no such binding occurred. The phenomenology of intentional action requires an appropriate predictive link between intentions and effects, rather than a retrospective inference that ''I'' caused the effect. (shrink)

When so much is being written on conscious experience, it is past time to face the question whether experience happens that is not conscious of itself. The recognition that we and most other living things experience non-consciously has recently been firmly supported by experimental science, clinical studies, and theoretic investigations; the related if not identical philosophic notion of experience without a subject has a rich pedigree. Leaving aside the question of how experience could (...) become conscious of itself, I aim here to demonstrate that the terms experience and consciousness are not interchangeable. Experience is a notoriously difficult concept to pin down, but I see non-conscious experience as based mainly in momentary sensations, relational between bodies or systems, and probably common throughout the natural world. If this continuum of experience — from non-conscious, to conscious, to self-transcending awareness — can be understood and accepted, radical constructivism (the “outside” world as a construct of experience) will gain a firmer foundation, panexperientialism (a living universe) may gain credibility, and psi will find its medium. (shrink)

Susan Pockett presents sound arguments supporting her reinterpretations of data that Libet and co-workers used to support a number of intriguing and influential conclusions regarding the microgenesis and timing of conscious sensory experience and volitionally controlled motor responses. The following analysis, extending and elaborating some of her main arguments, proposes that Libet's experimental methodologies and rationales, and thus also his interpretation of data, are flawed and that neglect or ignorance of methodological and empirical constraints well known to (...) sensory psychologists risks drawing premature or faulty conclusions about the timing of conscious experience. (shrink)

The descriptions in the literature of mystical experience and psychedelic experience, such as that induced by LSD, are usually written by persons who have actually experienced only one or perhaps neither of the two states. Because many of the most important effects can be understood by direct experience but only partially described in ordinary language, such lack of direct experience is a major drawback. Since there is disagreement over the question of whether mystical experience and (...) LSD experience can be ‘the same’, it would be helpful if an individual who has experienced aspects of both states would compare them. One of the authors describes his experience with both states. A particular form of mystical experience, cosmic consciousness , occurred spontaneously; no mind altering drugs were used. ALS later took LSD on 12-15 occasions. Both states of consciousness involved alterations in time sense, subject/object boundary, cognition, mood and perception. However, the changes with CC were qualitatively and quantitatively different from those of LSD. The authors conclude that CC and LSD can be quite different states of consciousness, although we cannot completely rule out the possibility that psychedelics might sometimes induce the same kinds of mystical experiences that occur for non-drug reasons. (shrink)

Libet demonstrated that a substantial duration (>0.5-1.0 s) of direct electrical stimulation of the surface of a sensory cortex at a threshold or liminal current is required before a subject can experience a percept. Libet and his co-workers originally proposed that the result could be due either to spatial and temporal facilitation of the underlying neurons or additionally to a prolonged central processing time. However, over the next four decades, Libet chose to attribute the prolonged latency for evoking (...) class='Hi'>conscious experience to a prolonged central processing time. In my view, Libet has not provided any convincing evidence, either on the basis of his own past work or in his critique of my paper, for his hypothesis of a central processing time exceeding 0.5s before conscious experience emerges following direct electrical threshold stimulation of the cortical surface. I stand by my original results and conclusion that such prolonged latencies are largely the consequence of a dynamically increasing cortical facilitatory process that begins hundreds of milliseconds before there is a sustained neuronal activation. In some cases, the facilitatory process must overcome an initial stimulus-induced inhibition before neuronal firing commences. (shrink)

It is often thought that there is little that seems more obvious from experience than that time objectively passes, and that time is, in this respect, quite unlike space. Yet nothing in the physical picture of the world seems to correspond to the idea of such an objective passage of time. In this paper, I discuss some attempts to explain this apparent conflict between appearance and reality. I argue that existing attempts to explain the conflict as the result of (...) a perceptual illusion fail, and that it is, in fact, the nature of memory, rather than perception, that explains why we are inclined to think of time as passing. I also offer a diagnosis as to why philosophers have sometimes been tempted to think that an objective passage of time seems to figure directly in perceptual experience, even though it does not. (shrink)

At any given time, a subject has a multiplicity of conscious experiences. A subject might simultaneously have visual experiences of a red book and a green tree, auditory experiences of birds singing, bodily sensations of a faint hunger and a sharp pain in the shoulder, the emotional experience of a certain melancholy, while having a stream of conscious thoughts about the nature of reality. These experiences are distinct from each other: a subject could experience the red (...) book without the singing birds, and could experience the singing birds without the red book. But at the same time, the experiences seem to be tied together in a deep way. They seem to be unified, by being aspects of a single encompassing state of consciousness. (shrink)

The planninnjg of this Study Week at the Pontifical Academy of Science from September 28 to October 4, 1964, began just two years before when the President, Professor Lemaitre, asked me if 1 would be responsible for a Study Week relating Psychology to what we may call the Neurosciences. 1 accepted this responsibility on the understanding that 1 could have as sistance from two colleagues in the Academy, Professors Heymans and Chagas. Besides participating in the Study Week they gave me (...) much needed assistance and advice in the arduous and, at times, perplexing task that 1 had undertaken, and 1 gratefully acknowledge my indebtedness to them. Though there have been in recent years many symposia concerned with the so-called higher functions of the brain, for example witbh percep tion, learning and conditioning, and with the processing of information in the brain, there has to my knowledge been no symposium specifically with brain functions and consciousness since the memorable treating Laurentian Conference of 1953, which was later published in 1954 as the book, "Brain Mechanisms and Consciousness. (shrink)

The paper is a criticism of the idea that a notion of has a significant role to play in the attempt to understand how the experience of change is possible. Discussion of such experience must give a significant place to its public and private manifestations. How should we picture the relationship between the experience of change and its manifestations? While we cannot identify these, we need not conclude that is something distinct from any of its public or (...) private manifestations. With that, we cannot grasp how time can be present in consciousness without reference to the fact that consciousness is located in time. (shrink)

The key work of the early Johann Gottlieb Fichte is the Grundlage ser gesammten Wissenschaftslehre [Foundation of the Entire Doctrine of Science] of 1794-95. The very circumstances of its publication ensure that it is a rather terse and disjointed statement of Fichtean philosophy. It consists of a very short preface, a “famous” section devoted to first principles, the so-called “basic propositions of the entire doctrine of science,” and eight discourses of widely diverging length. The first discourse, devoted to the “theoretical” (...) Wissenschaftslehre is one and a half times the length of the other seven. The third, fourth, fifth, sixth and eighth are barely a few pages long. It is an extremely peculiar work and not merely due to the circumstances of its publication. Its very argumentative structure threatens to trap the reader in forming hasty and preliminary judgements on the exact nature of the philosophical claims being made, and, quite specifically, those philosophical claims which might be ascribed to the author himself. The following contends that lack of attention to the structure of a work that, admittedly, exhibits very little in an overt fashion has led to wholesale confusion about the early system and its philosophical intent. Specifically, that too much attention has been paid to the famous section on grounding principles, and, furthermore, that attention only to these sections will lead to fundamental confusion and misunderstanding. This paper will attempt to examine this peculiar Fichtean text via the readings made by Dieter Henrich and Frederick Neuhouser, respectively. (shrink)

In daily life we take it for granted that our minds have conscious control of our actions, at least for most of the time. But many scientists and philosophers deny that this is really the case, because there is no generally accepted theory of how the mind interacts with the body. Max Velmans presents a non-reductive solution to the problem, in which ‘conscious mental control’ includes ‘voluntary’ operations of the preconscious mind. On this account, biological determinism is compatible (...) with experienced free will. Velmans’ theory is put to the test by nine critics: Ron Chrisley, Todd Feinberg, Jeffrey Gray, John Kihlstrom, Sam Rakover, Ramakrishna Rao, Aaron Sloman, Steve Torrance andRobert Van Gulick, followed by Velmans' reply. (shrink)

The greatest contemporary challenge in the arena of cognitive neuroscience concerns the relation between consciousness and the brain. Over recent years the focus of work in this area has switched from the analysis of diverse spatial regions of the brain to that of the timing of neural events. It appears that two conditions are necessary in order for neural events to become correlated with conscious experience. First, the firing of assemblies of neurones must achieve a degree of (...) coherence, and, second, reflexive (i.e. top-down, or reentrant) neural pathways must be activated. It does not, of course, follow that such neural activity causes consciousness; it may be, for example, that the neural activity formats the brain to interact with consciousness. The latter possibility is suggested by analysis of mystical texts suggesting that coherence and reflexivity constitute the conditions for the influx of “spirit.” Kabbalistic sources, for example, describe a hierarchy of “brains” in the human and divine realms through which the principles of coherence and reflexivity operate. Whilst the ontological assumptions of such a scheme place it beyond the realm of psychology, parallels with the picture deriving from the contemporary cognitive neuroscience of consciousness are striking. (shrink)

If, as Ned Block has argued, consciousness is a mongrel concept, then this collection resembles nothing so much as a visit to a dog pound, where one can hear all the varieties baying, at full volume. The experience is one of immersion in a voluminous excited cacophony, with much yipping and barking, some deep-throated growling, and other voices that can only be characterized as howling at the moon. What a time to be conscious! What a time to be (...) conscious of being conscious! (shrink)

_Behavioral and Brain Sciences_ , 15, 183-247, 1992. Reprinted in _The Philosopher's Annual_ , Grim, Mar and Williams, eds., vol. XV-1992, 1994, pp. 23-68; Noel Sheehy and Tony Chapman, eds., _Cognitive Science_ , Vol. I, Elgar, 1995, pp.210-274.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Abhidhamma Studies: Buddhist Explorations of Consciousness and TimeDouglas W. ShraderAbhidhamma Studies: Buddhist Explorations of Consciousness and Time. By Venerable Nyanaponika Thera. Fourth edition. Edited with an introduction by Bhikkhu Bodhi. Boston: Wisdom Publications, 1998. Pp. 160. Paper $16.95.The delightful, thought-provoking Abhidhamma Studies: Buddhist Explorations of Consciousness and Timeby the Venerable Nyanaponika Thera is the fourth incarnation of a text originally composed shortly after World War II, published in (...) 1949 (Frewin and Co., Ltd.). The Buddhist Publication Society issued a second, revised and enlarged edition in 1965 as well as a third edition, with relatively minor corrections, in 1976. The present edition, edited by Bhikkhu Bodhi, incorporates a variety of welcome changes, reflecting considerable effort and devotion to the task. In addition to authoring a superb introductory essay, Bodhi has "reformulated a few awkward sentences..., reorganized the notes, provided additional references, and supplied a bibliography" (p. viii). Perhaps the most intriguing and potentially significant change is evident in the title itself. Originally subtitled Researches in Buddhist Psychology, an apt but relatively uninformative description of its contents, the title now announces, even to the uninitiated, the book's unique, captivating subject matter: Buddhist Explorations of Consciousness and Time.This book is essential reading for any serious student of Buddhism. Additionally, it will appeal to those interested in a wide variety of both phenomenological and ontological issues: the manifold of experience, the nature of consciousness, the analysis of time, concepts of anattā(ego selflessness) and paticca-samuppāda(dependent origination), and so forth. An intermediate to advanced level of familiarity and understanding of basic Buddhist doctrines is recommended. It will prove particularly useful to scholars and students who have been intimidated by the vast, often cryptic, Abhidhamma literature.Apparently, the Buddha and his teachings were as enticing and yet profoundly puzzling and enigmatic to his contemporaries and followers as they remain to millions today. They challenge everything we commonly take to be real. That which appears substantial, we are told, is not. Contrary to our own (unexamined) inner/ subjective experience, as well as the teachings of most major world religions, we neither arenor havea self, for there is no self either to be or to have. The attempt to reconcile the teachings of the Buddha with existing beliefs and assumptions concerning the nature of reality led to a proliferation of competing philosophical schools. Each school developed its own distinctive Abhidhamma literature, ostensibly representing a deeper understanding of the teachings of the Buddha. In practice, the literature served to distinguish one school from another, guarding against and/or [End Page 637]correcting the "erroneous" teachings of the other schools. Over a period of approximately three centuries, the Abhidhamma Pitaka grew rapidly…in terms of the sheer volume of literature as well as complexity of doctrine. Paralleling that increase, it came to play a position of ever greater prominence, rivaling even the canonical collections of the Buddha's word (the Sutta and Vinaya Pitakas). Together the three became known as the Tipitaka: "Three Baskets of the Doctrine."Unfortunately for scholars, the only Abhidhammas to survive the widespread persecution of Buddhism in India during the twelfth century A.D.were those that had been transported to, and transplanted in, other lands. Specifically, the Theravāda Abhidhamma (seven books in Pāli) found an enduring home in Sri Lanka. The Sarvāstivāda Abhidhamma (also seven books) along with the Śāriputra-abhidharmaśāstra(probably the Dharmaguptaka School) were carried to China, where they were translated from Sanskrit into Chinese. Of these, it is the Theravaāda collection— particularly its first book (the Dharmasanganī) as well as the seventh book (the Patthana)—that forms the subject matter of Ven. Nyanaponika's study. The other two schools have long since vanished, except, as Bhikkhu Bodhi points out, that "a late exposition of the Sarvāstivāda Abhidhamma system, Vasubandhu's Abhidharmakośa, continues to be studied among Tibetan Buddhists and in the Far East" (p. x).Abhidhamma Studiesis divided into five chapters and two appendixes. Chapter 1, which was added in the second edition, provides a brief historical overview of "The Abhidhamma Philosophy." Those who approach the Abhidhamma... (shrink)

While some are currently debating whether time may or may not be an illusion, others keep devoting their time to the science of consciousness. Time as such may be seen as a physical or a subjective variable, and the limitations in our capacity of perceiving and analyzing temporal order and change in physical events definitely constrain our understanding of consciousness which, in return, constrains our conceptual under-standing of time. Temporal codes generated in the brain have been considered as the key (...) to insight into neural function and, ultimately, as potential neural substrates of consciousness itself. On the basis of cur-rent evidence and opinion from neuroscience and philosophy, we consider the interrelation between con-sciousness and time in the light of Hegel and Heidegger’s concepts of Sein (Being) and Zeit (Time). We suggest that consciousness can be defined in terms of a succession of psychological moments where we realize that we exist in, and are part of, a present moment in time. This definition places all other percep-tual or sensorial processes which may characterize phenomenal experience at a different level of analysis and centers the debate around consciousness on the fundamental identity link between awareness of the Ich (I) and awareness of what Heidegger termed Ursprüngliche Zeit (original time). We argue that human consciousness has evolved from the ability to be aware of, to remember, and to predict temporal order and change in nature, and that the limits of this capacity are determined by limits in the functional plasticity of resonant brain mechanisms. Although the conscious state of the Self is the ultimate expression of this evolution, it is devoid of any adaptive function as such. (shrink)

It is argued that physics must eventually expand to accommodate mind and consciousness but that this will require a new paradigm. The paradigm required will impinge on two problems on the borders of physics and philosophy: the relationship between physical space and perceptual space and the nature of the passage of time. It is argued that the resolution of both these problems may involve a 5-dimensional model, with the 5th dimension being associated with mental time, and this proposal may relate (...) to recent developments in brane cosmology. A description of consciousness must also entail a proper understanding of the specious present, the minimum timescale of conscious experience, this possibly being associated with a compactified extra dimension. There could even be a hierarchy of levels of consciousness, associated with a hierarchy of extra dimensions. (shrink)

This introductory chapter attempts to clarify the philosophical, empirical, and theoretical bases on which a cognitive neuroscience approach to consciousness can be founded. We isolate three major empirical observations that any theory of consciousness should incorporate, namely (1) a considerable amount of processing is possible without consciousness, (2) attention is a prerequisite of consciousness, and (3) consciousness is required for some specific cognitive tasks, including those that require durable information maintenance, novel combinations of operations, or the spontaneous generation of intentional (...) behavior. We then propose a theoretical framework that synthesizes those facts: the hypothesis of a global neuronal workspace. This framework postulates that, at any given time, many modular cerebral networks are active in parallel and process information in an unconscious manner. An information becomes conscious, however, if the neural population that represents it is mobilized by top-down attentional amplification into a brain-scale state of coherent activity that involves many neurons distributed throughout the brain. The long-distance connectivity of these `workspace neurons' can, when they are active for a minimal duration, make the information available to a variety of processes including perceptual categorization, long-term memorization, evaluation, and intentional action. We postulate that this global availability of information through the workspace is what we subjectively experience as a conscious state. A complete theory of consciousness should explain why some cognitive and cerebral representations can be permanently or temporarily inaccessible to consciousness, what is the range of possible conscious contents, how they map onto specific cerebral circuits, and whether a generic neuronal mechanism underlies all of them. We confront the workspace model with those issues and identify novel experimental predictions. Neurophysiological, anatomical, and brain-imaging data strongly argue for a major role of prefrontal cortex, anterior cingulate, and the areas that connect to them, in creating the postulated brain-scale workspace. (shrink)

The first part (“Is there a future?”), discusses the idea of the future in the context of Carl Schmitt’s vision for the spatial revolutions of modernity, and then the idea of Anthropocene, as a synonym for an environmental crisis endangering the very survival of humankind. From this point of view, the conquest of space and the colonization of Mars at the center of futuristic and technocratic visions appear to be an attempt to escape from human responsibilities on Earth. The second (...) part (“AI and other hyperobjects”) discusses the extent of intellectual hubris expressed in computation, AI (Garvin Minsky e Ray Kurzweil), and the philosophy of computing and information (Eric Fredkin), involved in the elaboration of new theoretical assessments on the ultimate nature of reality. Their vision is then contrasted and made to interact with that of philosopher Timothy Morton. He has taken the perspective of global warming and the possibility of ecological catastrophe seriously, avoiding all the futuristic enthusiasms and instead emphasizing the radical nature of the transformations that humans experience in the present. In this perspective, AI becomes one of the “hyperobjects,” like the Internet or climate change, in which humans are immersed. Morton’s hyperobjects delineate an uncanny view of the future; this uncanniness is not related to the supernatural but to the environment. The third section (“More-than-human-humanism”) further reflects on the “uncanniness” that human perceive in the encounters with the manifestations of hyperobjects. It also seeks to understand the human position in the face of the radical technological transformations induced by cybernetics and AI. This section discusses Anti-humanism, Transhumanism, and Posthumanism within the broader category of more-than-human thought, which seems to be a more appropriate term to clarify the possible misunderstandings induced by the word “posthuman” and “transhuman.” The central question is not to empower (Transhumanism) or disempower (Posthumanism) humans, but to see them in relation to what is not human, including other animals, the environment, and the machine. The analysis considers the works of Cary Wolfe, Jane Bennet, Bryant Levi, among others, and introduces ethical debates on cyborgs, robots, and Autonomous weapons systems (AWS). The fourth section (“Ethical Perspectives”) continues this inquiry, concentrating on the non-standard ethical theories of Luciano Floridi (Computer and Information Ethics) and David Gunkel (The question of the Machine). It examines the opportunity and feasibility of including in the discussion on the ethics of our time - characterized by the pervasiveness of AI - the notions of consciousness as theorized by Emmanuel Levinas’s Humanism of the Other and Paul Ricoeur’s Oneself as Another. Finally, the last section (“The time of the end?”) reflects on how the hyperobject, Anthropocene, re-establishes a sense of limits in human history and confirms the special responsibility of human beings, and supports the need for a more-than-human-humanism. The latter, in other words, means intertwining ourselves with a unique ecosystem which cannot be overlooked and which restores meaning to our relationship with the past, present, and future. The awareness of the current challenges of technology can and must express itself in different forms of resistance to the adverse effects of AI in our lives. The ethical approach based on the persisting role of human consciousness is essential, but it must be coupled with human decision-making and political action. (shrink)

Libet discovered that a substantial duration (> 0.5-1.0 s) of direct electrical stimulation of the surface of the somatosensory cortex at threshold currents is required before human subjects can report that a conscious somatosensory experience had occurred. Using a reaction time method we confirm that a similarly long stimulation duration at threshold currents is required for activation of elementary visual experiences (phosphenes) in human subjects following stimulation of the surface of the striate cortex. However, the reaction times for (...) the subject to respond to the cessation of the visual experience after the end of electrical stimulation could be as brief as 225-242 ms. We also carried out extensive studies in cats under a variety of anesthetic conditions using the same electrodes and parameters of stimulation employed in the human studies to study the patterns of neuronal activity beneath the stimulating surface electrode. Whereas sufficiently strong currents can activate neurons within milliseconds, stimulating currents close to threshold activate sustained neural activity only after at least 350-500 ms. When currents are close to threshold, some neurons are inhibited for several hundreds of millisecond before the balance between inhibition and excitation shifts towards excitation. These results suggest that the prolonged latencies, i.e., latencies beyond 200-250 ms, for the emergence of conscious experience following direct cortical stimulation result from a delay in the sustained activation of underlying cortical neurons at threshold currents rather than being due to any unusually long duration in central processing time. Intracellular records from cortical neurological cells during repetitive electrical stimulation of the surface of the feline striate cortex demonstrate that such stimulation induces a profound depolarizing shift in membrane potential that may persist after each stimulus train. Such a depolarization is evidence that extracellular K+ concentrations have increased during electrical stimulation. Such an increase in extracellular K+ progressively increases cortical excitability until the threshold for sustained activation of cortical neurons is reached and then exceeded. Consequently, the long latency for threshold activation of cortical neurons depends upon a dynamically increasing cortical facilatory process that begins hundreds of milliseconds before there is sustained activation of such neurons. In some cases, this facilatory process must overcome an initial stimulus-induced inhibition before neuronal firing commences. (shrink)