Local factors determine the stabilization of monocular ambiguous and binocular rivalry stimuli
Local factors determine the stabilization of monocular ambiguous and binocular rivalry stimuli
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DOI：
10.1016/j.cub.2004.05.042
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发表时间：
2004-06-08
期刊：
影响因子：
9.2
通讯作者：
He, S
中科院分区：
文献类型：
--
作者：
Chen, XC;He, S
如果刺激是间歇性呈现的，那么观察刺激的知觉交替可以减慢或停止[1，2]。最近的知觉经验的记忆已被提出来解释这种稳定效应。但这种“知觉记忆”的性质仍不清楚。通过使用一个旋转的圆柱体和两个dichoptically提出的正交光栅，我们探索的功能，是重要的稳定性，通过改变一个特定的功能之间的刺激交替介绍。对于旋转圆柱体，改变其颜色、旋转速度、大小或立体深度对其感知旋转方向的稳定性没有影响或影响极小。对于双眼竞争，当两个光栅的强度匹配，然后在两个眼睛之间的间歇呈现同步交换，知觉通常是稳定的一只眼睛。在这两种情况下，知觉稳定发生，只有当刺激被提交到相同的视网膜位置。这些结果表明，单眼视觉刺激的稳定性可能是由于去除了局部适应，对定义对象身份的特征不敏感。对于双眼竞争，保存的方向，而不是刺激身份的记忆的眼间抑制占的稳定效果。
Perceptual alternation in viewing bistable stimuli can be slowed or halted if the stimuli are presented intermittently [1, 2]. Memory of the recent perceptual experience has been proposed to explain this stabilization effect. But the nature of this "perceptual memory" remains unclear. By using a bistable rotating cylinder and two dichoptically presented orthogonal gratings, we explored the features that are important for the stabilization by changing a particular feature of the stimuli between alternate presentations. For the rotating cylinder, changing its color, rotating speed, size, or its stereo depth had no or minimal effect on the stabilization of its perceived rotation direction. For binocular rivalry, when the two gratings were matched in strength and then swapped between the two eyes synchronously with the intermittent presentation, the percepts were usually stabilized to one eye. In both cases, perceptual stabilization occurred only if the stimuli were presented to the same retinal location. These results suggest that the stabilization of monocular bistable stimuli is likely due to the removal of local adaptation, insensitive to the features that define the object identity. For binocular rivalry, preservation of the direction of interocular suppression rather than memory of the stimulus identity accounts for the stabilization effect.