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Normal and Defective Colour Vision$
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John D. Mollon, Joel Pokorny, and Ken Knoblauch

Print publication date: 2003

Print ISBN-13: 9780198525301

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198525301.001.0001

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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: 20 October 2021

Psychophysical Correlates of Parvo- and Magnocellular Function

Psychophysical Correlates of Parvo- and Magnocellular Function

Chapter:
(p.91) Chapter 10 Psychophysical Correlates of Parvo- and Magnocellular Function
Source:
Normal and Defective Colour Vision
Author(s):

Vivianne C. Smith

Joel Pokorny

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198525301.003.0010

A contrast discrimination technique was developed that revealed parvocellular (PC)- and magnocellular (MC)-pathway function by taking advantage of their differences in achromatic contrast response. Spatiotemporal processing for these pathways was evaluated using achromatic stimuli. The signals leaving the retina are subject to considerable further processing by higher visual processes. By biasing the early retinal processing to one or other pathway, different properties of higher order processes can be accessed. This chapter reviews these studies, indicating the possible clinical applications of the approach.

Keywords:   contrast discrimination, parvocellular function, magnocellular function, achromatic contrast response

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