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Visual ReflectionsA Perceptual Deficit and Its Implications$
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Michael McCloskey

Print publication date: 2009

Print ISBN-13: 9780195168693

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780195168693.001.0001

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Intact Processing of Nonvisual Location and Orientation Information

Intact Processing of Nonvisual Location and Orientation Information

(p.28) 4 Intact Processing of Nonvisual Location and Orientation Information
Visual Reflections

Michael McCloskey

Oxford University Press

The findings discussed in the preceding chapter demonstrate that AH made highly systematic location and orientation errors in a wide variety of tasks with visual stimuli. This chapter shows that whereas AH is severely impaired in perceiving the location and orientation of visual stimuli, she is intact in processing nonvisual location and orientation information. This pattern of results points clearly to a selective deficit in visual perception. A second conclusion, which emerged from the arrows experiment, is that AH's visual deficit affects her performance not only in tasks with visual stimuli but also in tasks where spatial vision may play a role in production of responses, such as tasks with drawing responses.

Keywords:   visual perception, auditory localization, kinesthetic localization, tactile localization, visual localization, visual orientation

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