FPL and sweep VEP to tritan stimuli in young human infants
FPL and sweep VEP to tritan stimuli in young human infants
Young infants can distinguish red from green without brightness cues which shows that neural pathways processing color information (the ‘red–green’ color-opponent pathway) are functional early in life. There is some doubt over whether the ‘blue–yellow’ pathway is functional in young infants. Here, we show that infants behave like tritanopic adults until 2–3 months post-term age. By 3–4 months, infants distinguish tritan stimuli, and therefore, the ‘blue–yellow’ pathway must be functional by that age. Our sweep visual evoked potentials to identical stimuli, however, are not significantly above noise levels, in disagreement with the behavioral responses. We discuss several possible explanations for the discrepancy.
infant color vision, isoluminance, visual development, visual evoked potentials, forced-choice preferential looking
2879-2891
Suttle, Catherine M.
aafd7e06-00de-4e4d-ade6-ff1d268fcc38
Banks, Martin S.
3fbd52ec-54e9-4f60-bf03-587c1959cecb
Graf, Erich W.
1a5123e2-8f05-4084-a6e6-837dcfc66209
2002
Suttle, Catherine M.
aafd7e06-00de-4e4d-ade6-ff1d268fcc38
Banks, Martin S.
3fbd52ec-54e9-4f60-bf03-587c1959cecb
Graf, Erich W.
1a5123e2-8f05-4084-a6e6-837dcfc66209
Suttle, Catherine M., Banks, Martin S. and Graf, Erich W.
(2002)
FPL and sweep VEP to tritan stimuli in young human infants.
Vision Research, 42 (26), .
(doi:10.1016/S0042-6989(02)00333-4).
Abstract
Young infants can distinguish red from green without brightness cues which shows that neural pathways processing color information (the ‘red–green’ color-opponent pathway) are functional early in life. There is some doubt over whether the ‘blue–yellow’ pathway is functional in young infants. Here, we show that infants behave like tritanopic adults until 2–3 months post-term age. By 3–4 months, infants distinguish tritan stimuli, and therefore, the ‘blue–yellow’ pathway must be functional by that age. Our sweep visual evoked potentials to identical stimuli, however, are not significantly above noise levels, in disagreement with the behavioral responses. We discuss several possible explanations for the discrepancy.
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Published date: 2002
Keywords:
infant color vision, isoluminance, visual development, visual evoked potentials, forced-choice preferential looking
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Local EPrints ID: 18304
URI: http://eprints.soton.ac.uk/id/eprint/18304
ISSN: 0042-6989
PURE UUID: a0e85349-2577-4208-b999-42bb6d69b57d
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Date deposited: 17 Jan 2006
Last modified: 16 Mar 2024 03:39
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Author:
Catherine M. Suttle
Author:
Martin S. Banks
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