HUMAN VISUAL SUPPRESSION
HUMAN VISUAL SUPPRESSION
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DOI:
10.1016/0042-6989(86)90164-1
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发表时间:
1986-01-01
期刊:
影响因子:
1.8
通讯作者:
VOLKMANN, FC
中科院分区:
文献类型:
--
作者:
VOLKMANN, FC
The history of research on visual systems, as abundantly illustrated in this Silver Jubilee Issue, is a history of the rejection of the naive realist’s view that “we see the world as it is”(Holt, 1912). The selectivity of vision has emerged as a primary outcome of the evolutionary process. Human visual perception as we understand it is based upon mechanisms that create for us an information-laden visual world, a world that is not to be described by the characteristics of the stimulus en~ ronment alone. Our visual systems filter input based upon wavelength and spatial frequency in highly selective ways. Different mechanisms respond selectively to stimulus luminance and to the movement of contours across the retina, Enormous amounts of potential info~ ation are discarded in the adaptive interest of creating a perceptual world of objects, identifiable by their sizes, shapes, and hues, which may move through the larger visual environment in relation to our own movements of body, head, and eyes.The phenomenon of visual suppression may appropriately be regarded as one means by which the visual system selects information. Stimuli which are perceived under many normal conditions are not perceived under certain conditions related to the temporal sequence of stimulation, the retinal areas stimulated, the form and luminance* characteristics of the stimuli, and the oculomotor behavior of the perceiver.