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Nathaniel D. Douda, Vicki J. Volbrecht, Jessica M. Sheppard, Jamie K. Opper, Janice L. Nerger; Effects of Stimulus Duration and Background on Peripheral Color Perception. Journal of Vision 2012;12(14):37. doi: 10.1167/12.14.37.
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© ARVO (1962-2015); The Authors (2016-present)
This study investigated how peripheral hue perception at one stimulus size (4.24°) is affected by changes in stimulus duration and by the presence of a background field that is only detected by rods. The 4.24° stimulus is known to fill the perceptive fields of the four elemental hues at 10° temporal retinal eccentricity with a stimulus duration of 500 ms and a retinal illuminance of 20 td. Hue naming functions were obtained with this stimulus at eight stimulus durations (10, 20, 30, 50, 100, 250, 500, and 1000 ms) for four wavelengths (400, 490, 550, 610 nm) and two background conditions (no background and -1.0 log td) after 30 min dark adaptation. For the 400 and 610 nm stimuli hue perception was relatively unaffected by stimulus duration in both background conditions. For the 490 nm stimulus, individuals showed an increase (decrease) in the percent blue (green) with increasing stimulus duration in the no background condition while at approximately 30 ms the percent green (percent yellow) increased (decreased) with stimulus duration for the 550 nm stimulus under both background conditions. The -1.0 log td background reduced the overall amount of blueness perceived with the 400 and 490 nm stimuli, but did not change the temporal pattern. Saturation increased with stimulus duration and did not appear to be significantly affected by the presence or absence of the background. In summary, adaptation of rods appears to decrease the perception of blueness and may under some circumstances alter the temporal growth function of blueness.
Meeting abstract presented at OSA Fall Vision 2012
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