EXPERIMENTS WITH RETINAL STABILIZED IMAGES . RELATIONS BETWEEN OBSERVATIONS AND NEURAL DATA
EXPERIMENTS WITH RETINAL STABILIZED IMAGES . RELATIONS BETWEEN OBSERVATIONS AND NEURAL DATA
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DOI:
10.1016/0042-6989(66)90051-4
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发表时间:
1966-01-01
期刊:
影响因子:
1.8
通讯作者:
VENDRIK, AJH
中科院分区:
文献类型:
--
作者:
GERRITS, HJM;DEHAAN, B;VENDRIK, AJH
Experiments with retinal stabilized images are described using the technique developed by Iarbus. Also experiments are performed with stabilized objects surrounded by a non-stabilized background and with moving objects (in one or all directions) on a stabilized background, offering the opportunity to observe the "on" and "off" activities separately. In addition the static pupil-reaction has been investigated. It is concluded that the origin of the observed stabilization effects is presumable not to be sought in the retina but rather in a higher center of the visual system. The results show that we cannot obtain a continuous sensation of brightness from short transient neuronal activities. However, the normal continuous activities of "on" and "off" fibers along a stimulus border is responsible for the preservation of the central activity and thereby for the perception of continuous brightness over the stimulus field. The "on" activity at "light on" serves to rapidly build up a perceptual activity in the "higher center". In the same way the "off" activity at "light off" rapidly builds up an activity in the "higher center" which neutralizes the "on" activity. The same principle holds for the color system. The importance of the contour for the preservation of the perception of a non-stabilized stim -ulus is demonstrated. Differences between stabilized and non-stabilized objects, as well as residual brightness after stabilization, are discussed.