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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Cortical correlate of pattern backward masking.
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Cortical correlate of pattern backward masking.

机译：模式反向掩盖的皮质相关。

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摘要

The perception of a briefly presented shape is strongly impaired when it is followed by another pattern, a phenomenon called backward masking. We found that the vast majority of a sample of shape-selective neurons in the macaque inferior temporal cortex respond selectively to backward-masked shapes, although these shapes could not be discriminated by human and monkey subjects. However, this selective response was brief, since it was either interrupted by the mask or overridden by a response to the mask itself. We show that reliable discrimination of briefly presented shapes by single neurons depends on the temporal integration of the response. Presentation of the mask, however, reduces the number of spikes available for integration, explaining backward masking. These results also provide direct neurophysiological evidence for the "interruption theory" of backward masking.
机译：紧随其后的是另一种图案（称为后向掩盖现象）时，对短暂呈现的形状的感知会大大受损。我们发现，猕猴下颞皮质中的形状选择神经元样本的绝大多数对后向掩盖的形状有选择性的响应，尽管这些形状无法被人和猴子受试者区分。但是，这种选择性响应是短暂的，因为它要么被掩码打断，要么被掩码自身的响应所覆盖。我们表明，由单个神经元对短暂呈现的形状的可靠区分取决于响应的时间积分。但是，遮罩的显示减少了可用于积分的尖峰数，从而解释了反向遮罩。这些结果也为反向掩蔽的“干扰理论”提供了直接的神经生理学证据。

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