Mesopic rod and S-cone interactions revealed by modulation thresholds

Zele, Andrew J., Kremers, Jan, & Feigl, Beatrix (2012) Mesopic rod and S-cone interactions revealed by modulation thresholds. Journal of the Optical Society of America A : Optics, Image Science & Vision, 29(2), A19-A26.

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We analyzed mesopic rod and S-cone interactions in terms of their contributions to the blue-yellow opponent pathway. Stimuli were generated using a 4-primary colorimeter. Mixed rod and S-cone modulation thresholds (constant L-, M-cone excitation) were measured as a function of their phase difference. Modulation amplitude was equated using threshold units and contrast ratios. This study identified three interaction types:

(1) A linear and antagonistic rod:S-cone interaction, (2) probability summation (3) and a previously unidentified mutual nonlinear reinforcement.

Linear rod:S-cone interactions occur within the blue-yellow opponent pathway. Probability summation involves signaling by different post-receptoral pathways. The origin of the nonlinear reinforcement is possibly at the photoreceptors.

Impact and interest:

7 citations in Scopus
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8 citations in Web of Science®

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78 since deposited on 13 Nov 2012
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ID Code: 54740
Item Type: Journal Article
Refereed: Yes
Funders: ARC
Keywords: mesopic, temporal, rod, s-cone, summation, color
DOI: 10.1364/JOSAA.29.000A19
ISSN: 1520-8532
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > Schools > School of Biomedical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Copyright Owner: Copyright 2012 Optical Society of America
Copyright Statement: This paper was published in Journal of the Optical Society of America A: Optics, Image Science & Vision and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Deposited On: 13 Nov 2012 00:11
Last Modified: 03 Oct 2014 04:13

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