Sensorimotor learning refers to improvements that occur through practice in the performance of sensory-guided motor behaviors. Leveraging novel technical capabilities of an immersive virtual environment, we probed the component kinematic processes that mediate sensorimotor learning. Twenty naïve subjects performed a simulated marksmanship task modeled after Olympic Trap Shooting standards. We measured movement kinematics and shooting performance as participants practiced 350 trials while receiving trial-by-trial feedback about shooting success. Spatiotemporal analysis of motion tracking elucidated the ballistic and refinement phases of hand (...) movements. We found systematic changes in movement kinematics that accompanied improvements in shot accuracy during training, though reaction and response times did not change over blocks. In particular, we observed longer, slower, and more precise ballistic movements that replaced effort spent on corrections and refinement. Collectively, these results leverage developments in immersive virtual reality technology to quantify and compare the kinematics of movement during early learning of full-body sensorimotor orienting. (shrink)

In 1970 Van Rensselaer Potter was the first to use the term "bioethics" in a publication to advocate the development of a new discipline to address the basic problems of human flourishing. This article analyzes Potter's notion of bioethics in order to understand its origins, sources, and substance. In early publications, Potter conceptualized bioethics as a bridge: between present and future, nature and culture, science and values, and finally between humankind and nature. In later publications, disappointed by (...) a predominant focus on individual and medical issues, and with a wish to underscore the need for a broader perspective, Potter introduced the new term "global bioethics," meant to transcend ethics specialties and integrate them into a new interdisciplinary endeavor to address global problems. A growing interest in global bioethics today means that Potter's original insights are more timely than ever. (shrink)

This paper explores the role of ‘community’ in the context of global bioethics. With the present globalization of bioethics, new and interesting references are made to this concept. Some are familiar, for example, community consent. This article argues that the principle of informed consent is too individual-oriented and that in other cultures, consent can be community-based. Other references to ‘community’ are related to the novel principle of benefit sharing in the context of bioprospecting. The application of this principle necessarily requires (...) the identification and construction of communities. On the global level there are also new uses of the concept of community as ‘global community.’ Three uses are distinguished: (1) a diachronic use, including past, present, and future generations, (2) a synchronic ecological use, including nonhuman species, and (3) a synchronic planetary use, including all human beings worldwide. Although there is a tension between the communitarian perspective and the idea of global community, this article argues that the third use can broaden communitarianism. The current development towards cosmopolitanism is creating a new global community that represents humanity as a whole, enabling identification of world citizens and evoking a sense of global solidarity and responsibility. The emergence of global bioethics today demonstrates this development. (shrink)

This paper begins with a discussion of the current legal definition of sex laid down in Corbett v Corbett. The implications of this test for three areas of the law, marriage, birth certificates and employment are then examined. Solutions from the United States of America and West Germany are studied and the suitability of similar solutions being transplanted into British law discussed.