TEMPORAL PROPERTIES OF HUMAN VISUAL FILTERS - NUMBER, SHAPES AND SPATIAL COVARIATION
TEMPORAL PROPERTIES OF HUMAN VISUAL FILTERS - NUMBER, SHAPES AND SPATIAL COVARIATION
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DOI：
10.1016/0042-6989(92)90112-v
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发表时间：
1992-01-01
期刊：
影响因子：
1.8
通讯作者：
SNOWDEN, RJ
中科院分区：
文献类型：
--
作者：
HESS, RF;SNOWDEN, RJ
中心凹视觉滤光片的时间特性是用一种方法揭示的，该方法是以前使用的噪声掩蔽范例的变体。这使得能够测量作为时空探测器阈值检测基础的机制的时间特性。与最近的建议一致，这些结果支持三种时间机制的存在。第三，更高的时间机制的证据只在低空间频率下才有说服力。此外，结果表明，尽管在单个过滤器或跨过滤器群体的过滤属性中存在一定程度的时空协变，但众所周知的人类检测灵敏度的时空协变可以用具有近似不变的时间属性的单个时间过滤器的灵敏度标度来充分解释。
The temporal properties of the foveal visual filters were revealed using a method which is a variant on previously used noise masking paradigms. This enables the temporal properties of the mechanisms underlying threshold detection of a spatio-temporal probe to be measured. In accord with recent suggestions these results support the existence of three temporal mechanisms. The evidence for the third, higher temporal mechanism is only persuasive at low spatial frequencies. Furthermore, the results suggest that although there is some degree of spatio-temporal covariation in the filtering properties either of individual filters or across the filter population, the well known spatio-temporal covariation in human detection sensitivity is adequately explained by a sensitivity scaling of individual temporal filters with approximately invariant temporal properties.