Orientation Anisotropy of Visual Stimuli in Rhesus Monkey: a Behavioral Study
- 3 August 1979
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 205 (4405), 511-513
- https://doi.org/10.1126/science.109923
Abstract
The contrast sensitivity of the rhesus monkey was tested, according to a modified reaction-time paradigm, for sine-wave grating targets at different orientations. The monkey possesses an oblique effect slightly larger than that of humans. A reaction time analysis showed the oblique effect to be a suprathreshold as well as a threshold phenomenon. The presence of this effect further strengthens the use of the monkey as a model for the human visual system.Keywords
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