The shared circuits model (SCM) is a useful explanatory framework that can be applied to interpersonal synchrony by incorporating temporal dynamics. Temporally precise predictive simulations and mirroring enable interpersonal synchrony. When partners' movements are highly synchronous, the self/other distinction can be blurred.

I support the application of the “evolution as tinkering” idea to vocalization and emphasize that some of the subcortical parts of the brain circuits used for speech organs retain features common to nonprimate mammals, and in some cases to lower vertebrates, pointing up the importance of cortical evolution as suggested by MacNeilage.

In this conceptual article, the authors explore the possibilities of another approach to examining the human dimensions of wildland fire. They argue that our understanding of this issue could be enhanced by considering a cultural studies construct known as the ‘‘circuit of culture.’’ This cross-disciplinary perspective provides increased analytic power by accounting for the meaningful role of 5 cultural processes in terms of their location and interrelation within social experience. The authors compare the circuit of culture approach with (...) a body of recent literature focused on wildland fire. The authors make the case that this research has moved in a positive direction since wildland fire first ignited social scientific interest in the 1980s, but it is still missing key cultural processes. Ultimately, following the circuit allows us to make more nuanced statements about meaning, something much needed in the face of the wicked problem of wildland fire. (shrink)

On April 3, 1995, the Fourth Circuit upheld the right of a Maryland hospital to terminate a surgeon who was HIV-positive ). A resident in the University of Maryland Neurosurgical Training Program was dismissed when hospital administrators learned of his infection with HIV. The resident, known as Dr. Doe, claimed that his termination violated federal laws protecting persons with disabilities. The court upheld the hospital's actions as lawful and affirmed the trial court's grant of summary judgment for the hospital.Dr. (...) Doe charged that his dismissal from the training program violated the Rehabilitation Act and the Americans with Disabilities Act. (shrink)

Hanlester Network v. Shalala ) marks the first test of the application of the Medicare-Medicaid anti-kickback statute to physician self-referral joint ventures. The most recent development in this ongoing litigation was the April 6, 1995 decision of the Ninth Circuit Court of Appeals, holding the Hanlester Network vicariously liable for its marketing vice president's knowing and willful violation of the antikickback statute. The vice president had offered to pay physician-investors in order to induce their referrals of program-related business.The Hanlester (...) Network was a California general partnership comprised of corporations, clinical laboratories, and individual investors. In April 1987, it entered into a management agreement on behalf of the clinical laboratories with SmithKline BioScience Laboratories. (shrink)

A fundamental characteristic of human visual perception is the ability to group together disparate elements in a scene and treat them as a single unit. The mechanisms by which humans create such groupings remain unknown, but grouping seems to play an important role in a wide variety of visual phenomena, and a good understanding of these mechanisms might provide guidance for how to improve machine vision algorithms. Here, we build on a proposal that some groupings are the result of connections (...) in cortical area V2 that join disparate elements, thereby allowing them to be selected and segmented together. In previous instantiations of this proposal, connection formation was based on the anatomy (e.g., extent) of receptive fields, which made connection formation obligatory when the stimulus conditions stimulate the corresponding receptive fields. We now propose dynamic circuits that provide greater flexibility in the formation of connections and that allow for top-down control of perceptual grouping. With computer simulations we explain how the circuits work and show how they can account for a wide variety of Gestalt principles of perceptual grouping, texture segmentation tasks, amodal illusory contours, and ratings of perceived groupings. We propose that human observers use such top-down control to implement task-dependent connection strategies that encourage particular groupings of stimulus elements in order to promote performance on various visual tasks. (shrink)

The United States Court of Appeals for the Seventh Circuit held, in Murrey v. United States ), that claims for a physician's failure to obtain a patient's informed consent are not barred by the Federal Tort Claims Act as a species of misrepresentation. The court further held that the claim was not barred by the failure to include the issue of informed consent in the administrative claim. This decision reduces the burden on plaintiffs to state every cognizable claim consistent (...) with the facts in an administrative proceeding; the failure to do so would prevent them from raising the claim in court.The patient, Thomas Murrey, a sixty-eight-year-old U.S. veteran, sought treatment at a Veteran's Administration hospital in North Chicago, Illinois. VA doctors diagnosed him with prostate cancer, and advised him to undergo surgery to remove his entire prostate. (shrink)

One of the most foundational and continually contested questions in the cognitive sciences is the degree to which the functional organization of the brain can be understood as modular. In its classic formulation, a module was defined as a cognitive sub-system with nine specific properties; the classic module is, among other things, domain specific, encapsulated, and implemented in dedicated neural substrates. Most of the examinations—and especially the criticisms—of the modularity thesis have focused on these properties individually, for instance by finding (...) counterexamples in which otherwise good candidates for cognitive modules are shown to lack domain specificity or encapsulation. The current paper goes beyond the usual approach by asking what some of the broad architectural implications of the modularity thesis might be, and attempting to test for these. The evidence does not favor a modular architecture for the cortex. Moreover, the evidence suggests that best way to approach the understanding of cognition is not by analyzing and modelling different functional domains in isolation from the others, but rather by looking for points of overlap in their neural implementations, and exploiting these to guide the analysis and decomposition of the functions in question. This has significant implications for the question of how to approach the design and implementation of intelligent artifacts in general, and language-using robots in particular. (shrink)

The target article says surprisingly little about the possible role of shared circuits in language and communication. This commentary considers how they might contribute to linguistic communication, particularly during dialogue. We argue that shared circuits are used to promote alignment between linguistic representations at many levels and to support production-based emulation of linguistic input during comprehension.

Cet article illustre de façon concrète et détournée les relations villes-campagnes. Les circuits courts alimentaires sont considérés comme vertueux (réduction des intermédiaires et des distances, « locavorisme »), mais qu’en est-il vraiment de leur durabilité, compte-tenu de leur complexité logistique? Pour le producteur, premier maillon de la chaîne, la commercialisation et le transport représentent travail et coûts supplémentaires. Les circuits courts ne sont pas moins énergivores : flux entre fermes et points de vente fragmentés en une multitude de petits volumes. (...) L’auteur propose plusieurs formes d’organisation pour pallier à ces inconvénients : mutualiser le transport entre producteurs partenaires et promouvoir une coopération logistique territoriale, consolider le transfert de flux en le déléguant à un prestataire extérieur. L’enjeu de la logistique et le rôle des intermédiaires non commerciaux sont clé. (shrink)

Imitation, deliberation, and mindreading are characteristically human sociocognitive skills. Research on imitation and its role in social cognition is flourishing across various disciplines. Imitation is surveyed in this target article under headings of behavior, subpersonal mechanisms, and functions of imitation. A model is then advanced within which many of the developments surveyed can be located and explained. The shared circuits model (SCM) explains how imitation, deliberation, and mindreading can be enabled by subpersonal mechanisms of control, mirroring, and simulation. It is (...) cast at a middle, functional level of description, that is, between the level of neural implementation and the level of conscious perceptions and intentional actions. The SCM connects shared informational dynamics for perception and action with shared informational dynamics for self and other, while also showing how the action/perception, self/other, and actual/possible distinctions can be overlaid on these shared informational dynamics. It avoids the common conception of perception and action as separate and peripheral to central cognition. Rather, it contributes to the situated cognition movement by showing how mechanisms for perceiving action can be built on those for active perception.;>;>The SCM is developed heuristically, in five layers that can be combined in various ways to frame specific ontogenetic or phylogenetic hypotheses. The starting point is dynamic online motor control, whereby an organism is closely attuned to its embedding environment through sensorimotor feedback. Onto this are layered functions of prediction and simulation of feedback, mirroring, simulation of mirroring, monitored inhibition of motor output, and monitored simulation of input. Finally, monitored simulation of input specifying possible actions plus inhibited mirroring of such possible actions can generate information about the possible as opposed to actual instrumental actions of others, and the possible causes and effects of such possible actions, thereby enabling strategic social deliberation. Multiple instances of such shared circuits structures could be linked into a network permitting decomposition and recombination of elements, enabling flexible control, imitative learning, understanding of other agents, and instrumental and strategic deliberation. While more advanced forms of social cognition, which require tracking multiple others and their multiple possible actions, may depend on interpretative theorizing or language, the SCM shows how layered mechanisms of control, mirroring, and simulation can enable distinctively human cognitive capacities for imitation, deliberation, and mindreading. (shrink)

This paper reviews three social scientific accounts of the civic sector's role in society: the government failure, contract failure, and voluntary failure theories. All three explain the role of nonprofit organizations as compensating for the market's failure to provide certain collective goods. This approach involves a radical misinterpretation of the underlying principles of civic sector organizations. An account is needed that explains their economy in terms of their normative concerns, rather than explaining normative concerns in terms of their economy. I (...) lay a foundation for such an account by examining the self-understanding among civic sector organizations that they should be "mission-driven," and the implications of this self-understanding for the sector as a "social economy." Whereas "mission-drivenness" calls attention to service-provision, resource-sharing, and open communication as the normative core of civic sector organizations, the notion of a "social economy" suggests a recirculation of money into channels where standard economic logic no longer holds. The key to the civic sector's role lies not in responses to market failure, but in the short-circuiting of a money-driven capitalist economy. (shrink)

Newborn neurons are generated in the adult hippocampus from a pool of self‐renewing stem cells located in the subgranular zone (SGZ) of the dentate gyrus. Their activation, proliferation, and maturation depend on a host of environmental and cellular factors but, until recently, the contribution of local neuronal circuitry to this process was relatively unknown. In their recent publication, Song and colleagues have uncovered a novel circuit‐based mechanism by which release of the neurotransmitter, γ‐aminobutyric acid (GABA), from parvalbumin‐expressing (PV) interneurons, (...) can hold radial glia‐like (RGL) stem cells of the adult SGZ in a quiescent state. This tonic GABAergic signal, dependent upon the activation of γ2 subunit‐containing GABAA receptors of RGL stem cells, can thus prevent their proliferation and subsequent maturation or return them to quiescence if previously activated. PV interneurons are thus capable of suppressing neurogenesis during periods of high network activity and facilitating neurogenesis when network activity is low. (shrink)

On February 11, 2003, the Second Circuit ruled in Cicio v. Vytra Healthcare that patients may in some cases sue health maintenance organizations for medical malpractice under state law. The decision is particularly notable for opening the door to state tort claims in an area that had heen considered preempted by the Employee Retirement Income Security Act of 1974.ERISA is a federal statute that regulates employee benefit plans, establishing a complex set of rules and minimum standards for most health (...) and pension plans in private industry. ERISA requires that participants receive certain information about their benefits plans, and imposes fiduciary responsibilities on individuals with discretionary control over plan assets. These individuals have certain specific duties, and are required to work “solely in the interest of the participants and beneficiaries and for the exclusive purpose of: providing benefits to participants and their beneficiaries; and defraying reasonable expenses of administering the plan.”. (shrink)

We prove the first unconditional consistency result for superpolynomial circuit lower bounds with a relatively strong theory of bounded arithmetic. Namely, we show that the theory [Formula: see text] is consistent with the conjecture that [Formula: see text], i.e. some problem that is solvable in non-deterministic exponential time does not have polynomial size circuits. We suggest this is the best currently available evidence for the truth of the conjecture. The same techniques establish the same results with [Formula: see text] (...) replaced by the class of problems decidable in non-deterministic barely superpolynomial time such as [Formula: see text]. Additionally, we establish a magnification result on the hardness of proving circuit lower bounds. (shrink)

This paper is devoted to introduce a novel fourth-order hyperchaotic system. The hyperchaotic system is constructed by adding a linear feedback control level based on a modified Lorenz-like chaotic circuit with reduced number of amplifiers. The local dynamical entities, such as the basic dynamical behavior, the divergence, the eigenvalue, and the Lyapunov exponents of the new hyperchaotic system, are all investigated analytically and numerically. Then, an active control method is derived to achieve global chaotic synchronization of the novel hyperchaotic (...) system through making the synchronization error system asymptotically stable at the origin based on Lyapunov stability theory. Next, the proposed novel hyperchaotic system is applied to construct another new hyperchaotic system with circuit deformation and design a new hyperchaotic secure communication circuit. Furthermore, the implementation of two novel electronic circuits of the proposed hyperchaotic systems is presented, examined, and realized using physical components. A good qualitative agreement is shown between the simulations and the experimental results around 500 kHz and below 1 MHz. (shrink)

This essay discusses short-circuited trans care by focusing on failures of t4t as an ethos both interpersonally and within particular trans scenes. The author begins by recounting an experience working at a bar/restaurant that appealed to its identity as a caring trans community space as part of its exploitation of trans workers. This dynamic inspires the main argument, that t4t can become an ethos of scenes and institutions beyond the interpersonal while short-circuiting practices of trans care. Short-circuited trans care is (...) then traced to t4t by drawing from Hil Malatino's work on trans care and t4t, Kai Cheng Thom's work on community dynamics, and trans literature to argue that practices of t4t often include abuse, expulsion, and assumptive care. This short-circuited trans care is linked to trans scenes by discussing the ethos of t4t in the history of Topside Press and trans cultural production. The author does not condemn t4t and to this effect offers a critique of tethering trans cultural production to prestige instead of care. Rather, the goal of this essay is to openly discuss aspects of t4t and trans care that are often obscured through the projection of a highly questionable “we” or universalized “trans community.”. (shrink)

This paper introduces the concept of performance circuits as a means for understanding economic transactions. The concept of the performance circuits emphasizes the script-like sequences and the existing cultural narratives that enable the believable performances of those scripts. The concept of performance circuits allows for Zelizer’s concept of relational work to be applied in ethnographic studies of economic life, decomposing the constituent parts that enable the accomplishment of value in the marketplace. The paper opens with a dramaturgical performance at the (...) United States Federal Reserve and then turns to microstudies of handicraft production, modern art markets, and neighborhood branding to demonstrate how one can study market dramas unfolding, sometimes unremarkably, emotions being generated, and background representations making loosely scripted actions understandable. (shrink)

In St. Francis Regional Medical Center v. Blue Cross & Blue Shield of Kansas ), the United States Court of Appeals for the Tenth Circuit upheld Blue Cross/Blue Shield of Kansas's anti-assignment requirement, on the grounds that the Employee Retirement Income Security Act preempted a hospital's claim against Blue Cross. The court also held that public policy supported anti-assignment requirements in health plans not covered under ERISA.When drafting ERISA, Congress did not explicitly address assignability of health care benefits. According (...) to the court of appeals, congressional silence constituted an intent to allow the parties to negotiate freely the assignment of health care benefits. Examining non-ERISA health plans, the court adopted a balancing test to determine the validity of anti-assignment clauses; it found that anti-assignment requirements promote freedom of contract and may include medical costs. (shrink)

On September 18, 1995, the U.S. Court of Appeals for the Seventh Circuit handed down a decision in Blue Cross & Blue Shield United of Wisconsin v. Marshfield Clinic ) that sets two important precedents regarding the status of health maintenance organizations under antitrust law. Chief Judge Posner, writing for the court, concluded that HMOs do not constitute a market separate from the general market for medical services and that agreements, between HMOs in a region, to operate in separate (...) areas constitute a prohibited form of market splitting.This case primarily involves two HMOs in north central Wisconsin: one a subsidiary of Blue Cross, the other a subsidiary of the Marshfield Clinic. The Blue Cross HMO claimed that the Marshfield HMO had an illegal monopoly in the region's HMO market and therefore violated the Sherman Act ). (shrink)

Short circuit is a key factor which drastically affects the efficiency of metal electrorefining. Infrared image of the intercell busbar region is used to perform short circuit detection. To cope with the high thermal background, a two-level short circuit detection method is designed. Firstly, with background subtraction, high intensity short circuit electrodes, as well as the background, are removed, and normal working electrodes are preserved. In the second stage, suspicious short circuit areas are sifted out (...) by normal electrode detecting and texture period estimation. Gaussian difference filter which is based on the human visual system is improved to match the target gray distribution. A comparative experiment indicates that the proposed orthogonal DoG outperforms the original DoG and top-hat in the accuracy of normal electrode detection. The two-level detection method in this paper is applied in a copper electrolysis plant and exhibits superiority in locating short circuits and avoiding miss detection. (shrink)

The United States Court of Appeals for the Third Circuit has followed the prevailing view in the federal courts by holding that state Medicaid funds must cover the same kinds of abortions as provided for under the 1994 Hyde Amendment. On July 25, 1995, the court held that a Pennsylvania law was preempted to the extent that it restricted Medicaid funding for abortions beyond the limits set by federal law ) by imposing additional procedures not prescribed by the Hyde (...) Amendment.Particularly, the court held that the Pennsylvania Abortion Control Acts ), whch requires victims of rape and incest to report the crime to law enforcement officials before Medicaid abortion funding is made available, exceeded the reporting requirements set by the Hyde Amendment, which provides a waiver for patients who are physically or mentally unable to comply with the reporting requirement. (shrink)

Par habitude, par nécessité ou en raison de la faiblesse de notre intelligence dépassée par le tsunami des savoirs et des informations, nos façons ordinaires de nourrir la vie des idées consistent à la découper en secteurs, à la compartimenter en disciplines, à l'atomiser en petites spécialités étiquetées bien comme il faut. Il s'agira ici de suivre le chemin inverse, de briser les enclos, s'encanailler, provoquer des courts-circuits au petit bonheur la chance et, si possible, des étincelles. D'associer des éléments (...) trop souvent séparés dans les analyses : physique et philosophie, pensée et action, réalité et imagination, hasard et destin, infini mathématique et engagement existentiel, intelligence analytique et courage physique, Einstein et Rolling Stones, image et mirage, langage et impesanteur, raison et déraison... Mettons le nez dehors, inventons une chimie nouvelle, bâtissons des molécules littéraires à partir d'atomes disciplinaires! É. K."--Page 4 of cover. (shrink)

In this article I discuss some of the findings of an on-going ethnographic study of two once-weekly circuit training classes held in one of the growing number of private health and fitness clubs. The article has four aims. First, to demonstrate and explore the active role of the body in a central practice of body modification/maintenance: i.e. circuit training. Second, to demonstrate that circuit training is a social structure which both shapes the activity of the agent and (...) is shaped by that (shaped) agent. I aim also to explore this structuration process. Third, to draw out a number of aspects of the sociality of body maintenance/modification. Training, I argue, is a form of symbolic interaction, localized within specific and durable social networks. The final aim of the article is to weave these various claims together into a coherent overall account of circuit training as a form of body modification. As an investigation of the embodied nature of practices of body maintenance and the active role of social agents in relation to these practices the article rejoins an important strand of sociological investigations of ‘the body’. At the same time, however, the article seeks to challenge those approaches, often rooted in Foucauldian analysis, which portray the body as ‘docile’ in relation to body maintenance. Foucauldian inspired studies often reify practices of modification as ‘technologies’ or ‘apparatuses’, ignoring the active role of embodied agents in these practices and eliding the difference between texts which prescribe ways of acting and the more messy and complex reality of those ways of acting. (shrink)

The Meaning Circuit Hypothesis (MCH) is a synthesis of ideas providing John Wheeler’s outline of ultimate physics, which he fine-tuned over several decades from the 1970s onward. It is a ‘working hypothesis’ in which ‘existence is a ‘meaning circuit”’ that portrays the world as a “system self-synthesized by quantum networking.” It was strongly advocated by him for roughly two decades and since then has had an increasingly strong impact on the approach of many investigators of quantum theory; in (...) particular, elements such as the quantum participator and ‘it from bit’ are now considered by others as candidate components of a foundation for quantum theory in which information is involved essentially. Therefore, it is worthy of review and critique. (shrink)

The U.S. Court of Appeals for the Third Circuit held, in Brader v. Allegheny General Hospital, 167 E3d 832, that the Health Care Quality Improvement Act, 42 U.S.C. §§ 11101-11152, shields a Pennsylvania hospital from a surgeon's claims of contract violations.The plaintiff, Alan Brader, M.D., joined Allegheny General Hospital's provisional medical staff in July 1988. During the next two years, he performed several abdominal aortic aneurysm repairs and various other operations. Several of Brader's patients sustained serious injuries or died (...) during surgery from complications. In 1989, Brader's supervisors, Drs. Daniel Diamond and George Magovern, met to discuss their dissatisfaction with Brader's behavior, his departures from hospital protocol, as well as his disruptive presence in the hospital. From 1989 to 1990, Brader continued to perform surgical procedures on incoming patients, and he continued to violate hospital notification protocol and lost a patient during surgery. In spring 1990, the Quality Assurance Department compiled data on AAA procedures for the hospital's physicians. (shrink)

The shared circuits model (SCM) is a bold attempt to explain how humans make sense of action, at different levels. In this commentary we single out five concerns: (1) the lack of a developmental account, (2) the absence of double-dissociation evidence, (3) the neglect of joint attention and joint action, (4) the inability to explain discrete emotion perception, and (5) the lack of predictive power or testability of the model. We conclude that Hurley's model requires further work before it could (...) be seen as an improvement over earlier models. (shrink)

Recent studies on neural pathways in a broad spectrum of vertebrates suggest that, in addition to migration and an increase in the number of certain select neurons, a significant aspect of neural evolution is a “parcellation” (segregation-isolation) process that involves the loss of selected connections by the new aggregates. A similar process occurs during ontogenetic development. These findings suggest that in many neuronal systems axons do not invade unknown territories during evolutionary or ontogenetic development but follow in their ancestors' paths (...) to their ancestral targets; if the connection is later lost, it reflects the specialization of the circuitry.The pattern of interspecific variability suggests (1) that overlap of circuits is a more common feature in primitive (generalized) than in specialized brain organizations and (2) that most projections, such as the retinal, thalamotelencephalic, corticotectal, and tectal efferent ones, were bilateral in the primitive condition. Specialization of these systems in some vertebrate groups has involved the selective loss of connections, resulting in greater isolation of functions. The parcellation process may also play an important role in cell diversification.The parcellation process as described here is thought to be one of several underlying mechanisms of evolutionary and ontogenetic differentiation. (shrink)

In this paper, a novel no-equilibrium 5D memristive hyperchaotic system is proposed, which is achieved by introducing an ideal flux-controlled memristor model and two constant terms into an improved 4D self-excited hyperchaotic system. The system parameters-dependent and memristor initial conditions-dependent dynamical characteristics of the proposed memristive hyperchaotic system are investigated in terms of phase portrait, Lyapunov exponent spectrum, bifurcation diagram, Poincaré map, and time series. Then, the hidden dynamic attractors such as periodic, quasiperiodic, chaotic, and hyperchaotic attractors are found under (...) the variation of its system parameters. Meanwhile, the most striking phenomena of hidden extreme multistability, transient hyperchaotic behavior, and offset boosting control are revealed for appropriate sets of the memristor and other initial conditions. Finally, a hardware electronic circuit is designed, and the experimental results are well consistent with the numerical simulations, which demonstrate the feasibility of this novel 5D memristive hyperchaotic system. (shrink)