Using optical imaging based on intrinsic signals, we studied spatial frequency tuning characteristics of cat primary visual cortex at different visual topological locations.
采用基于内源信号的脑光学成像方法，在大范围视皮层研究了不同空间拓扑位置对应的皮层区的对光栅刺激空间频率反应特性。
Spatial and temporal frequency tuning characteristics of the pattern electroretinogram (PERG) were analysed by means of the fast Fourier transform (FFT)technique.
用快速傅里叶转换（FFT）技术分析了图形视网膜电图（PERG）的空间和时间调谐特性。
Spatial and temp-oral frequency tuning characteristics were found to be somehow correlated.
空间和时间调谐特性存在一定的相关。
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