There has been no generally accepted cognitive definition of dreaming. An electrophysiologic correlate (REM sleep) has become its defining characteristic. Dreaming and REM sleep are complex states for which the Dreaming + REMs model is over-simplified and limited. The target articles in this BBS special issue present strong evidence for a dissociation between dreaming and REM sleep. [Hobson et al.; Nielsen, Revonsuo; Solms; Vertes & Eastman].

Avant même d'être condamné pour "contestation de crime contre l'humanité" au tournant du siècle, Roger Garaudy était déjà marginalisé dans les champs intellectuel et politique français. Après avoir incarné la résistance au néostalinisme dans le Parti communiste, le philosophe qui fut longtemps l'interlocuteur privilégié de Jean-Paul Sartre au sein du PCF en fut spectaculairement exclu en 1970 pour s'être opposé aux Soviétiques qui venaient d'écraser le Printemps de Prague. Celui que l'historiographie du communisme retient plus volontiers comme le "stalinien modèle", (...) qu'il fut en effet dans l'après-guerre, était pourtant devenu, malgré sa proximité avec Thorez, un critique de plus en plus affirmé du stalinisme après les révélations du XXe Congrès du Parti communiste de l'Union soviétique (PCUS) en 1956 et un acteur majeur de l'aggiornamento du PCF. Son combat pour rénover le communisme français et son goût précoce pour l'écologie et le dialogue des civilisations en firent quelque temps une figure respectée du progressisme français, mais celui qui répétait que le Socialisme était condamné s'il refusait de s'ouvrir à la "transcendance" vit son étoile pâlir après 1970 au point qu'il devint un intellectuel illégitime, celui que l'on condamne sans l'avoir lu. Ce livre explique ce parcours singulier et les raisons de cette "descente aux enfers" de l'ancien philosophe du Bureau politique, avant sa condamnation ultime."--Page 4 of cover. (shrink)

The first main result isolates some conditions which fail for the class of graphs and hold for the class of Abelian p-groups, the class of Abelian torsion groups, and the special class of "rank-homogeneous" trees. We consider these conditions as a possible definition of what it means for a class of structures to have "Ulm type". The result says that there can be no Turing computable embedding of a class not of Ulm type into one of Ulm type. We apply (...) this result to show that there is no Turing computable embedding of the class of graphs into the class of "rank-homogeneous" trees. The second main result says that there is a Turing computable embedding of the class of rank-homogeneous trees into the class of torsion-free Abelian groups. The third main result says that there is a "rank-preserving" Turing computable embedding of the class of rank-homogeneous trees into the class of Boolean algebras. Using this result, we show that there is a computable Boolean algebra of Scott rank ${\mathrm{\omega }}_{1}^{\mathrm{C}\mathrm{K}}$. (shrink)

The biochemistry of geotropism in plants and gravisensing in e.g. cyanobacteria or paramacia is still not well understood today [1]. Perhaps there are more ways than one for organisms to sense gravity. The two best known relatively old explanations for gravity sensing are sensing through the redistribution of cellular starch statoliths and sensing through redistribution of auxin. The starch containing statoliths in a gravity field produce pressure on the endoplasmic reticulum of the cell. This enables the cell to sense direction. (...) Alternatively, there is the redistribution of auxin under the action of gravity. This is known as the Cholodny-Went hypothesis [2], [3]. The latter redistribution coincides with a redistribution of electrical charge in the cell. With the present study the aim is to add a mathematical unified field explanation to gravisensing. (shrink)

Computable structures of Scott rank ${\omega_1^{CK}}$ are an important boundary case for structural complexity. While every countable structure is determined, up to isomorphism, by a sentence of ${\mathcal{L}_{\omega_1 \omega}}$ , this sentence may not be computable. We give examples, in several familiar classes of structures, of computable structures with Scott rank ${\omega_1^{CK}}$ whose computable infinitary theories are each ${\aleph_0}$ -categorical. General conditions are given, covering many known methods for constructing computable structures with Scott rank ${\omega_1^{CK}}$ , which guarantee that the (...) resulting structure is a model of an ${\aleph_0}$ -categorical computable infinitary theory. (shrink)

The posterior parietal cortex (PPC) is the most likely site where egocentric spatial relationships are represented in the brain. PPC cells receive visual, auditory, somaesthetic, and vestibular sensory inputs; oculomotor, head, limb, and body motor signals; and strong motivational projections from the limbic system. Their discharge increases not only when an animal moves towards a sensory target, but also when it directs its attention to it. PPC lesions have the opposite effect: sensory inattention and neglect. The PPC does not seem (...) to contain a “map” of the location of objects in space but a distributed neural network for transforming one set of sensory vectors into other sensory reference frames or into various motor coordinate systems. Which set of transformation rules is used probably depends on attention, which selectively enhances the synapses needed for making a particular sensory comparison or aiming a particular movement. (shrink)

The method of approximate reasoning using a fuzzy logic introduced by Baldwin (1978 a,b,c), is used to model human reasoning in the resolution of two well known paradoxes. It is shown how classical propositional logic fails to resolve the paradoxes, how multiple valued logic partially succeeds and that a satisfactory resolution is obtained with fuzzy logic. The problem of precise representation of vague concepts is considered in the light of the results obtained.

Heath Robinson could perhaps draw a diagram that made sense of the legislative and regulatory structure Bonnicksen describes in this book. However Heath Robinson machines, no matter how baroque, actually achieve something: in the four years covered by this contemporary history the American “system” seems to have achieved very little. That we have not yet seen a confirmed cloned child produced in the USA or elsewhere does not seem due in any part to the activity that Bonnicksen describes. This is (...) not a history of America’s progress towards crafting a policy; it is an account of its failure to make one.The bulk of this book details the legal and regulatory responses to emerging reproductive technology in America following the announcement of the birth of Dolly the cloned lamb in 1997. The remainder gives an overview of the position of other countries around the world, and a brief concluding chapter outlines the options open to the US in the future. Lest anything that follows might suggest otherwise, I found this book interesting and informative, and …. (shrink)

In discussions of the complex and controversial problem of Spartan land-tenure,1 the mysterious ‘ρχαα μορα’ has assumed an importance out of all proportion to its prominence in the sources, for the actual phrase only occurs once in extant literature. It owes its importance to the fact that the reference to it has been used to support the theory that there were two categories of land in Sparta, a theory which in turn is held to explain how, when all Spartans supposedly (...) owned equal estates, there could nevertheless be rich ones and poor ones, as authors such as Herodotos, Thucydides, Xenophon, and Aristotle make clear. The answer, it is claimed, is that although all Spartans possessed an equal share of one category of land, they could own more or less of the other category.2. (shrink)

When Gamurrini first published the Peregrinatio ad loca sancta, the narrative by an abbess of a pilgrimage undertaken to the Holy Land in the last quarter of the fourth century, he identified the authoress with Silvia, the sister of Arcadius' minister Rufinus. Heraeus, however, in his edition lends the weight of his authority to the view that the work was written by a certain Aetheria, and in his preface gives solid reasons for his preference. He also states that a thirteenth-century (...) catalogue of the Limoges Cathedral Library mentions the book under the title Itinevarium Egenae abbatissae, but he regards the form Egeria as a mere corruption. (shrink)

About the extent of the trouble and the suitability of the remedies that have been advanced, there have been some differences of opinion; everyone, however, has recognized that there is something amiss in the lines 984–6. At the very least few would deny these difficulties: ξυνεμβ⋯λοιс is suspect. ψαμμ⋯αс must be regarded as seriously corrupt. χρ⋯νοс … παρ⋯βηсεν must be emended as a whole so that either the indispensable constituents of two complete clauses appear or ⋯πε⋯ disappears. ψαμμ⋯αс ⋯κ⋯τα παρ⋯ (...) and εὔχομαι δ᾽ ⋯ξ ⋯μ⋯с must be brought into metrical correspondence. (shrink)

Physician conflict of interest has been of concern since Hippocrates and rarely is this concern more evident than in the relationship between pharmaceutical sales representatives (PSR) and physicians. Given the acrimonious public debates concerning this issue a careful exploration of the concerns at sake and the conceptual arguments which support such concerns is called for. In this piece I will take as heuristic the conceptual philosophical framework argued for by H. Tristram Engelhardt. This framework would sanction interactions between PSRs and (...) physicians given that such relationships are free and without coercion. Further, patients must be informed, uncoerced and free in choosing such relationships with physicians who engage in interactions with PSRs. I consider four major criticisms which claim that PSR-physician interactions are morally impermissible: 1) influence, 2) “patients do not choose, but they pay,” 3) violation of ethical principles, and 4) erosion of the patient-physician relationship. Each is shown to be unpersuasive under Engelhardtian philosophy. As long as the principle of permission and informed consent obtain without coercion than the interaction between PSRs and physicians would be construed to be morally permissible. (shrink)