POLARITY SPECIFIC ADAPTATION TO MOTION IN THE HUMAN VISUAL-SYSTEM
POLARITY SPECIFIC ADAPTATION TO MOTION IN THE HUMAN VISUAL-SYSTEM
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DOI：
10.1016/0042-6989(91)90206-k
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发表时间：
1991-01-01
期刊：
影响因子：
1.8
通讯作者：
OHALLORAN, A
中科院分区：
文献类型：
--
作者：
MATHER, G;MOULDEN, B;OHALLORAN, A
三个实验研究极性特定的适应运动。 实验1采用反相光栅作为适应刺激和测试刺激，测试时间极性特异性适应。 每个反相光栅都包含相反移动的方向分量，因此在方向上是平衡的，但是适应光栅的两个分量随着时间的推移只产生一个极性的亮度变化，而测试光栅的分量呈现不同的符号。 调整后，仅包含未调整的时间变化的测试组件可见。 第二个实验，使用类似的程序，发现空间极性特定适应的证据。 实验结果可以解释的运动检测器，保留有关空间和时间极性的信息。 第三个实验发现，空间和时间极性特定的适应不同的时间频率的依赖。
Three experiments investigated polarity specific adaptation to movement. Experiment 1 tested for temporal polarity specific adaptation, using counterphase sawtooth gratings as adapting and test stimuli. Each counterphase grating contained oppositely moving sawtooth components, and was thus balanced for direction, but both components of the adapting grating created only one polarity of luminance change over time, whereas the components of the test grating presented different signs. After adaptation, only the test component containing the unadapted temporal change was visible. A second experiment, using an analogous procedure, found evidence for spatial polarity specific adaptation. Experimental results can be explained by motion detectors which preserve information about spatial and temporal polarity. A third experiment found that spatial and temporal polarity specific adaptation differ in their dependence on temporal frequency.