Domain of metamers exciting intrinsically photosensitive retinal ganglion cells (ipRGCs) and rods

Any stimulus can be described as composed of two components-a fundamental color stimulus that controls the three cone responses and a metameric black that has no effect on cones but can drive photoreceptors other than cones [e.g., rods and melanopsin expressing retinal ganglion cells (ipRGCs)]. The...

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Bibliographic Details
Published inJournal of the Optical Society of America. A, Optics, image science, and vision Vol. 29; no. 2; p. A366
Main Authors Viénot, Françoise, Brettel, Hans, Dang, Tuong-Vi, Le Rohellec, Jean
Format Journal Article
LanguageEnglish
Published United States 01.02.2012
Subjects
Adult
Calibration
Humans
Iris - anatomy & histology
Iris - physiology
Lighting
Photic Stimulation
Pupil - physiology
Retinal Cone Photoreceptor Cells - cytology
Retinal Ganglion Cells - cytology
Retinal Rod Photoreceptor Cells - cytology
Spectrum Analysis
Young Adult
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Summary:Any stimulus can be described as composed of two components-a fundamental color stimulus that controls the three cone responses and a metameric black that has no effect on cones but can drive photoreceptors other than cones [e.g., rods and melanopsin expressing retinal ganglion cells (ipRGCs)]. The Cohen and Kappauf [Am. J. Psychol. 95, 537 (1982)] method is extended to calculate the black metamer basis for a limited set of band spectra. Using seven colored LEDs, the method is exploited to produce real metamer illuminations that stimulate in parallel melanopsin expressing ipRGCs and rods, at most or at least. We have verified that the pupil diameter increases when the ipRGC and rod excitation is at a minimum. For 14 observers, the average relative increase is 12%.
ISSN:1520-8532
DOI:10.1364/josaa.29.00a366