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- Title
Influence of Lateral Masking on Contrast Detection Thresholds of Bars Differing in Width.
- Authors
M. V. Danilova; V. M. Bondarko
- Abstract
Contrast detection thresholds for bars 1, 2, or 3 arcmin wide and 1 deg long were estimated in the presence of high-contrast flank bars of the same size. The distance between the flank and the test bars varied from 1 to 30 arcmin. Regardless of the bar width, the thresholds increased when the test and flank bars were in a summation zone 68 arcmin wide. With increasing distance between the test and flank bars, the thresholds decreased and reached a plateau. The results testified to an influence of surrounding patterns on the responses of individual receptive fields of neurons processing the test stimuli rather than to lateral interactions between the fields. An attempt was made to apply this explanation to the results of earlier studies concerning the lateral interactions of spatial frequency channels in tasks consisting of detection of objects masked in the same manner.
- Publication
Human Physiology, 2004, Vol 30, Issue 2, p137
- ISSN
0362-1197
- Publication type
Article