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Consciousness Lost and FoundA Neuropsychological Exploration$
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Lawrence Weiskrantz

Print publication date: 1999

Print ISBN-13: 9780198524588

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198524588.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 24 September 2021

Attributes and possible pathways of residual visual capacity

Attributes and possible pathways of residual visual capacity

Chapter:
(p.127) 6 Attributes and possible pathways of residual visual capacity
Source:
Consciousness Lost and Found
Author(s):

Lawrence Weiskrantz

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198524588.003.0007

In the absence of striate cortex, it is in no sense completely deprived of visual information, although it may be reduced quantitatively. This chapter examines how the residual information is processed qualitatively, and whether any particular pathways or their targets, or interactions with other targets or further projections, have a responsibility for any particular visual attribute. Further, this chapter explores whether the absence of striate cortex eliminates any particular attribute and, in particular, whether it eliminates visual awareness. A detailed assessment of the visual system is presented, including the retina, to relate various subtypes of residual capacity to the known or putative properties of specific subparts of the extra-striate visual pathways and cortical areas. Two questions are also addressed regarding the ‘blind’ aspect of blindsight by the chapter.

Keywords:   striate cortex, visual information, residual information, visual awareness, visual system, visual pathways, cortical areas

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