Reaction Time as a Function of Peripheral Retinal Locus around Fovea: Effect of Stimulus Size
- 6 October 1976
- journal article
- research article
- Published by SAGE Publications
- Vol. 43 (2), 603-606
- https://doi.org/10.2466/pms.1976.43.2.603
Abstract
Using targets of four sizes between 18' and 116' at a fixed luminance of 5.8 cd/m2, human visual reaction times (RT) were measured on a circle at 30° eccentric to the fovea. A foveal and 12 peripheral retinal loci were explored, covering the range between 0° and 330° in steps of 30° units on a circle about the fovea. RT decreased significantly by the stimulation to the quadrant retinal loci between nasal and superior side. RT decreased as a function of increasing target size and the amount of decrement was relatively larger in the periphery than in the fovea.Keywords
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