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The unseen color aftereffect of an unseen stimulus: insight from blindsight into mechanisms of color afterimages.

Abstract:

We show here that, in the absence of a direct geniculostriate input in human subjects, causing loss of sight in the visual half-field contralateral to the damage, the pupil responds selectively to chromatic modulation toward the long-wavelength (red) region of the spectrum locus even when the stimulus is isoluminant for both rods and cones and entirely restricted to the subjects' "blind" hemifields. We also show that other colors are less or wholly ineffective. Nevertheless, red afterimages, ...

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Publication status:
Published

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Publisher copy:
10.1073/pnas.96.20.11637

Authors


Barbur, JL More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MSD, Experimental Psychology
Harlow, JA More by this author
Journal:
Proceedings of the National Academy of Sciences of the United States of America
Volume:
96
Issue:
20
Pages:
11637-11641
Publication date:
1999-09-05
DOI:
EISSN:
1091-6490
ISSN:
0027-8424
URN:
uuid:4e44660f-93c2-4b12-ab30-03e2ff4118a2
Source identifiers:
23097
Local pid:
pubs:23097
Language:
English
Keywords:

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