Although our eyes receive incomplete and ambiguous information, our perceptual system is usually able to successfully construct a stable representation of the world. In the case of ambiguous figures, however, perception is unstable, spontaneously alternating between equally possible outcomes. The present study compared EEG responses to ambiguous figures and their unambiguous variants. We found that slight figural changes, which turn ambiguous figures into unambiguous ones, lead to a dramatic difference in an ERP (“event-related potential”) component at around 400 ms. This (...) result was obtained across two different categories of figures, namely the geometric Necker cube stimulus and the semantic Old/Young Woman face stimulus. Our results fit well into the Bayesian inference concept, which models the evaluation of a perceptual interpretation’s reliability for subsequent action planning. This process seems to be unconscious and the late.. (shrink)

Violence in psychiatric clinics has been a consistent problem since the birth of modern psychiatry. In this paper, I examine current efforts to understand and reduce both violence and coercive responses to violence in psychiatry, arguing that these efforts are destined to fall short. By and large, scholarship on psychiatric violence reduction has focused on identifying discrete factors that are statistically associated with violence, such as patient demographics and clinical qualities, in an effort to quantify risk and predict violent acts (...) before they happen. Using the work of Horkheimer and Adorno, I characterize the theoretical orientation of such efforts as identity thinking. I then argue that these approaches lead to epistemic imperceptiveness and a subtle form of conceptual restraint on patients. I suggest a reorientation in psychiatric research, away from identity thinking and toward a more productive and just approach to the problem of violence in psychiatric clinics. (shrink)

The advent of the Internet has had a significant impact on the formation of an information-driven, rapid-paced society. The number of Internet users reached 50 million in only five years compared to 13 years for television and 38 years for radio. Consumer expectation for access, convenience, and speed has made the cyberspace superhighway a medium for knowledge exchange and for e-commerce. The Internet offers a wide variety of health services and products to healthcare professionals as well as to the public. (...) Online pharmaceutical sales are predicted to reach $20–25 billion over the next four years. This is a dramatic increase when compared to the $1.9 billion in 1999. At the click of the mouse, medications can be ordered and delivered conveniently to your door. Yet, consumer discomfort with the security of information provided via the Internet is growing, and recent incidents involving disclosure of healthcare information serve to heighten this concern. (shrink)

We describe a case of an elderly patient suffering from advanced dementia whose chronic confusion has become a source of frustration for her caregivers. Mrs. M experiences a touching interaction with a new nurse who takes a different approach with her. We describe this interaction and elaborate upon it by drawing from Catholic social teaching and the philosophy of play. Cases like these do not involve dramatic or esoteric ethical problematics, but rather the sort of dilemma born of the everyday (...) tragedies of lingering illness, aging and caretakers’ fatigue. Nathan’s approach offers a different way of seeing and being with the wearisome patient. (shrink)

Research on human cadavers is an important mechanism of scientific progress and comprises a large industry in the United States. However, despite its importance and influence, there is little ethical or regulatory oversight of cadaver-based research. This lack of transparency raises important ethical questions. Thus, this paper serves as a call for ethicists and regulators to pay increased attention to cadaver research. I argue that cadaver research ought to be considered a subset of human subjects research and held accountable to (...) higher ethical standards. After describing current practices, I argue that oversight of cadaver research as a form of human subjects research is appropriate because cadaver research is similar to other types of human research, participants in cadaver research incur risks of harm, and a current lack of oversight has allowed the cadaver industry to entice research participation through ethically questionable practices. This paper urges greater dialogue among human subjects research ethicists and regulators about what constitutes appropriate protections for participants in cadaver research. (shrink)

Stark disparities exist in the United States' health care system. Thirty-five million Americans are uninsured, severely impeding their access to necessary health care. Concurrently, others receive health care services that are of unproven necessity and benefit. We assert that this situation is unjust and morally indefensible.

Muscle synergies reflect the presence of a common neural input to multiple muscles. Steering small sets of synergies is commonly believed to simplify the control of complex motor tasks like walking and running. When these locomotor patterns emerge, it is likely that synergies emerge as well. We hence hypothesized that in children learning to run the number of accompanying synergies increases and that some of the synergies’ activities display a temporal shift related to a reduced stance phase as observed in (...) adults. We investigated the development of locomotion in 23 children aged 2–9 years of age and compared them with seven young adults. Muscle activity of 15 bilateral leg, trunk, and arm muscles, ground reaction forces, and kinematics were recorded during comfortable treadmill walking and running, followed by a muscle synergy analysis. We found that toddlers and preschoolers utilize a “walk-run strategy” when learning to run: they managed the fastest speeds on the treadmill by combining double support and flight phases. In particular the activity duration of the medial gastrocnemius muscle was weakly correlated with age. The number of synergies across groups and conditions needed to cover sufficient data variation ranged between four and eight. The number of synergies tended to be smaller in toddlers than it did in preschoolers and school-age children but the adults had the lowest number for both conditions. Against our expectations, the age groups did not differ significantly in the timing or duration of synergies. We believe that the increase in the number of muscle synergies in older children relates to motor learning and exploration. The ability to run with a FP is clearly associated with an increase in the number of muscle synergies. (shrink)

Beauchamp and Childress’ biomedical principlism is nearly synonymous with medical ethics for most clinicians. Their four principles are theoretically derived from the “common morality”, a universal cache of moral beliefs and claims shared by all morally serious humans. Others have challenged the viability of the common morality, but none have attempted to explain why the common morality makes intuitive sense to Western ethicists. Here I use the work of Charles Taylor to trace how events in the Western history of ideas (...) made the common morality seem plausible and yet, ironically, underscore the cultural particularity of the so-called common morality. I conclude that the supposedly universal common morality is actually quite culturally contained. Importantly, this should give us pause about the global authority of principlism and Beauchamp and Childress’ claim to a global bioethics project. (shrink)