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Sensory Substitution and Augmentation$
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Fiona Macpherson

Print publication date: 2018

Print ISBN-13: 9780197266441

Published to British Academy Scholarship Online: September 2019

DOI: 10.5871/bacad/9780197266441.001.0001

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PRINTED FROM BRITISH ACADEMY SCHOLARSHIP ONLINE (www.britishacademy.universitypressscholarship.com). (c) Copyright British Academy, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in BASO for personal use.date: 18 November 2019

The Processing of What, Where, and How

The Processing of What, Where, and How

Insights from Spatial Navigation via Sensory Substitution

Chapter:
(p.150) 9 The Processing of What, Where, and How
Source:
Sensory Substitution and Augmentation
Author(s):

Michael J. Proulx

David J. Brown

Achille Pasqualotto

, Fiona Macpherson
Publisher:
British Academy
DOI:10.5871/bacad/9780197266441.003.0009

Vision is the default sensory modality for normal spatial navigation in humans. Touch is restricted to providing information about peripersonal space, whereas detecting and avoiding obstacles in extrapersonal space is key for efficient navigation. Hearing is restricted to the detection of objects that emit noise, yet many obstacles such as walls are silent. Sensory substitution devices provide a means of translating distal visual information into a form that visually impaired individuals can process through either touch or hearing. Here we will review findings from various sensory substitution systems for the processing of visual information that can be classified as what (object recognition), where (localization), and how (perception for action) processing. Different forms of sensory substitution excel at some tasks more than others. Spatial navigation brings together these different forms of information and provides a useful model for comparing sensory substitution systems, with important implications for rehabilitation, neuroanatomy, and theories of cognition.

Keywords:   sensory substitution, spatial navigation, object recognition, perception for action

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