皮层下ON和OFF细胞反应的差异可以解释黑白光斑刺激产生的视觉后像的不对称性

来源 :中国心理学会,中科院心理研究所 | 被引量 : 0次 | 上传用户:hulan2010
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  PURPOSE:Human subjects are more sensitive to luminance decrements than luminance increments,as is evident by a lower threshold and shorter latency for dark stimuli.
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目的:给双眼呈现不同的刺激或者双稳态刺激会导致视觉意识的切换。间歇性呈现的方式会使双稳态刺激稳定在一个知觉上,可能是由知觉记忆导致的。本文拟通过研究皮层距离对双稳态知觉稳定性的影响,探讨这种知觉记忆是否存储在早期有视网膜分区的视皮层,或者更晚的脑区。方法:间歇性呈现双眼竞争和双稳态刺激,当空间距离保持不变的情况下,改变刺激在早期视觉皮层上表征的皮层距离,研究早期视皮层距离的变化对知觉稳定性的影响。
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