Autor: |
Goodson, Felix, South, Gail |
Zdroj: |
Bulletin of the Psychonomic Society; June 1980, Vol. 15 Issue: 6 p381-382, 2p |
Abstrakt: |
These experiments were designed to determine whether the threshold of the trace phenomenon (the streak of light that is observed when a light is moved rapidly within the field of vision) could be influenced by the adaptation conditions of the retina and/or the nature or locus of the imposed stimulus. The experiments employed a rotating light stimulus, the speed of which could be systematically varied and accurately determined. In Experiment 1 it was predicted that the trace threshold would vary as a function of dark adaptation and stimulus intensity, in Experiment 2 it was predicted that the threshold would vary as a function of dark adaptation and stimulus locus, and in Experiment 3 it was predicted that the threshold would vary as a function of color adaptation and stimulus color. None of the predictions were supported. It was concluded that the trace phenomenon is probably due to central cortical activity rather than to peripheral processes within the retina. |
Databáze: |
Supplemental Index |
Externí odkaz: |
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