Download Blindsight_ a case study and implications by Lawrence Weiskrantz PDF

By Lawrence Weiskrantz

Harm to the neocortex is mostly understood to bring about blindness. experiences of a few sufferers who've suffered from this way of blindness have, however, published that they could discriminate particular types of visible occasions inside of their "blind" box. although, sufferers achieve this with out being conscious of this skill: they believe they're basically "guessing". This phenomenon has been termed "blindsight" via Professor Weiskrantz and his collaborators, who have been one of the first to explain it. It has attracted enormous curiosity between neuroscientists, psychologists, and philosophers, who see attainable implications for theories of belief and for awareness.
This now vintage booklet, first released in 1986, offers an account of analysis over the variety of years right into a specific case blindsight, including a dialogue of the historic and neurological history. A different instances pronounced by way of different investigators and a few theoretical and sensible matters and implications are reviewed. All neuroscientists and psychologists with an curiosity within the phenomena will welcome this reissued model.

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Firstly, it cannot apply to the evidence with monkeys where the completeness of the lesion and the absence of islands can be confirmed with certainty. Gazzaniga et al. (1994) would no doubt acknowledge this but are unwilling to accept its relevance, even for this early stage of visual processing and despite the close similarity of the Page xxxiii monkey's and the human's visual pathways. We have seen (above), in fact, that the monkey without V1 behaves like the human blindsight subject in classifying visual events in the blind field, to which it can respond with almost perfect accuracy, as 'non-visual' (Cowey and Stoerig 1995, 1997).

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1993). The organization of neural systems in the primate cerebral cortex. Proc. R. Soc. Lond B 252, 13-18. Yukie, M. and Iwai, E. (1981). Direct projection from dorsal lateral geniculate nucleus to the prestriate cortex in macaque monkeys. J. Comp. Neurol. 201, 81-97. Zihl, J. (1980). 'Blindsight': improvement of visually guided eye movements by systematic practice in patients with cerebral blindness. Neuropsychologia 18, 71-77. (1981). Recovery of visual functions in patients with cerebral blindness.

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