Jump to ContentJump to Main Navigation
Ways of SeeingThe scope and limits of visual cognition$
Users without a subscription are not able to see the full content.

Pierre Jacob and Marc Jeannerod

Print publication date: 2003

Print ISBN-13: 9780198509219

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198509219.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 21 March 2019

Dissociations of visual functions by brain lesions in human patients

Dissociations of visual functions by brain lesions in human patients

Chapter:
(p.73) 3 Dissociations of visual functions by brain lesions in human patients
Source:
Ways of Seeing
Author(s):

PIERRE JACOB

MARC JEANNEROD

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198509219.003.0005

The task of the dorsal pathway is to determine the spatial layout of objects by processing their respective position in the visual field. According to the system of coordinates in which this processing is effected in the dorsal system, different outcomes are obtained. When an object's position is encoded in allocentric coordinates, its spatial position is determined relative to other objects. When it is encoded in egocentric coordinates, its spatial position is determined relative to the agent's effector and the object becomes a goal for action. Spatial localization and the visuomotor transformation are thus conceived of as two complementary functions of the dorsal pathway. This chapter examines neuropsychological evidence for similar dissociations in human visual capacities based on the examination of lesions in the human visual system. It considers the effects of lesions in the primary visual cortex, the ventral pathway, and in the dorsal pathway.

Keywords:   visual impairment, lesions, ventral pathway, dorsal pathway, human visual system, visual cortex

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .