Blindsight A Case Study And Implications

This book gives a detailed discussion of the puzzling phenomenon of blindsight, focusing on research conducted over ten years on an individual case and incorporating findings from the work of other investigators.

The first edition of Blindsight, written by Lawrence Weiskrantz was an important and highly cited account of studies of the phenomenon - Blindsight. The updated edition retains the original text of the first edition, but brings the book up to date with developments in this area in the past decade.

This is a readable, structured and accessible A to Z of neurology and its practice.

With fifty-five peer reviewed chapters written by the leading authors in the field, The Blackwell Companion to Consciousness is the most extensive and comprehensive survey of the study of consciousness available today. Provides a variety of philosophical and scientific perspectives that create a breadth of understanding of the topic Topics include the origins and extent of consciousness, different consciousness experiences, such as meditation and drug-induced states, and the neuroscience of consciousness.

Descartes is well known for his decisive and spectacular break with the philosophical tradition. Indeed, on account of that break, he is frequently reputed to be the “father of modern philosophy.” This reputation, in an important sense, seems deserved. The present collection, however, attempts to reevaluate the currency of this common opinion by attending to the impact of “Cartesianism” on philosophy from its immediate epicenter in 17th century science and metaphysics up to its continuing consequences today. In a larger sense, the volume aims to contribute to efforts underway in contemporary scholarship to arrive at a more accurate and comprehensive understanding of Descartes’ philosophical achievement as such. Accordingly, the essays in Part I address the character of Descartes’ originality with respect to the foundations, method and trajectory of his philosophical project, while those in Part II focus more exclusively on the lasting challenges which issue from that originality. The range and variety of approaches assembled in the collection are intended to reflect the complexity of Descartes’ own thought. The result is a volume which will be of interest to students of metaphysics, epistemology, ethics and the history of philosophy as well as contemporary phenomenology, philosophy of mind and philosophy of language.

Binocular vision is achieved by five neurovisual systems originating in the retina but varying in their destination within the brain. Two systems have been widely studied: the retino-tectal or retino-collicular route, which subserves an expedient and raw estimate of the visual scene through the magnocellular pathway, and the retino-occipital or retino-cortical route, which allows slower but refined analysis of the visual scene through the parvocellular pathway. But there also exist further neurovisual systems: the retino-hypothalamic, retino-pretectal, and accessory optic systems, which play a crucial role in vision though they are less understood. The retino-pretectal pathway projecting onto the pretectum is critical for the pupillary or photomotor reflex. The retino-hypothalamic pathway projecting onto the suprachiasmatic nucleus regulates numerous behavioral and biological functions as well as circadian rhythms. The accessory optic system targeting terminal lateral, medial and dorsal nuclei through the paraoptic fasciculus plays a role in head and gaze orientation as well as slow movements. Taken together, these neurovisual systems involve 60% of brain activity, thus highlighting the importance of vision in the functioning and regulation of the central nervous system. But vision is first and foremost action, which makes perception impossible without movement. Binocular coordination is a prerequisite for binocular fusion of the object of interest on the two foveas, thus ensuring visual perception. The retino-collicular pathway is sufficient to elicit reflexive eye movements with short latencies. Thanks to its motor neurons, the superior colliculus activates premotor neurons, which themselves activate motor neurons of the oculomotor, trochlear and abducens nuclei. At a higher level, a cascade of neural mechanisms participates in the control of decisional eye movements. The superior colliculus is controlled by the substancia nigra pars reticulata, which is itself gated by subcortical structures such as the dorsal striatum. The superior colliculus is also inhibited by the dorsolateral prefrontal cortex through a direct prefrontotectal tract. Cortical areas are crucial for the triggering of eye movements: the frontal eye field, supplementary eye field, and parietal eye field. Finally the cerebellum maintains accuracy. The focus of the present research topic, entitled Neural bases of binocular vision and coordination and their implications in visual training programs, is to review the most recent findings in brain imaging and neurophysiology of binocular vision and coordination in humans and animals with frontally-placed eyes. The emphasis is put on studies that enable transfer of knowledge toward visual training programs targeting visual field defects (e.g., hemianopia) and binocular functional disorders (e.g., amblyopia).

Consciousness has long been a subject of interest in philosophy and religion but only relatively recently has it become subject to scientific investigation. Now, more than ever before, we are beginning to understand this mental state. Developmental psychologists understand when we first develop a sense of self; neuropsychologists see which parts of the brain activate when we think about ourselves and which parts of the brain control that awareness. Cognitive scientists have mapped the circuitry that allows machines to have some form of self awareness, and neuroscientists investigate similar circuitry in the human brain. Research that once was separate inquiries in discreet disciplines is converging. List serves and small conferences focused on consciousness are proliferating. New journals have emerged in this field. A huge number of monographs and edited treatises have recently been published on consciousness, but there is no recognized entry point to the field, no comprehensive summary. This encyclopedia is that reference. Organized alphabetically by topic, coverage encompasses a summary of major research and scientific thought regarding the nature of consciousness, the neural circuitry involved, how the brain, body, and world interact, and our understanding of subjective states. The work includes contributions covering neuroscience, psychology, philosophy, and artificial intelligence to provide a comprehensive backdrop to recent and ongoing investigations into the nature of conscious experience from a philosophical, psychological, and biological perspective.

This book introduces students to the principal issues in the philosophy of mind by tracing the history of the subject from Plato and Aristotle through to the present day. Over forty primary-source readings are included. Extensive commentaries from the editors are provided to guide student readers through the arguments and jargon and to offer necessary historical context for the readings. The new third edition examines some of the most exciting recent developments in the field, including advances in theories about the mind’s relation to action and agency. Previous editions of this book, published under the title A Historical Introduction to the Philosophy of Mind, have been praised and widely taught for more than two decades.