Journal article

Influence of chromaticity on vernier and stereo acuity

John Krauskopf, Jason D Forte

JOURNAL OF VISION | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | Published : 2002

Abstract

Vernier offset thresholds for targets modulated in luminance or isoluminantly along the L-M axis were confirmed to be equal for targets whose contrasts were equal multiples of those required for detection. On the other hand, stereoscopic depth thresholds were elevated by a factor of 10 or more for isoluminantly modulated targets. Thresholds for vernier targets are 2 or 3 times larger with a gap of 20 arcmin than for a gap of 1 arcmin for both isoluminant and luminance targets. On the other hand, stereo thresholds decrease by a factor of 2 to 3 for both classes of target over the same range. We consider our results in the light of recent electrophysiological and psychophysical evidence and co..

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Grants

Awarded by National Eye Institute


Awarded by NATIONAL EYE INSTITUTE


Funding Acknowledgements

This work was made possible by grant EY06638 from the National Eye Institute. The authors would like to thank Peter Lennie for commenting on the manuscript and Jon Peirce and Isabelle Mareschal for assistance as observers and for technical discussion. Commercial Relationships: None.