Blakemore C, Movshon J A, Van Sluyters R C
Exp Brain Res. 1978 Apr 14;31(4):561-72. doi: 10.1007/BF00239812.
Kittens were dark-reared except for exposure to three types of spatially periodic, vertically striped pattern: 1. single, widely spaced black bars; 2. wide areas of regular vertical grating separated by large blank patches; 3. a uniform, continuous grating with a spatial frequency of 0.5 c/deg. In each case there was a bias towards vertical in the distribution of preferred orientations of cells recorded in the visual cortex. The contrast sensitivity of individual neurones for gratings of different spatial frequencies was analysed quantitatively. In kittens exposed to a uniform grating of 0.5 c/deg, many cells were maximally sensitive close to 0.5 c/deg, as they are in normal cats. The occipital potential evoked by vertical gratings higher in frequency than 0.3 c/deg was consistently greater in amplitude than that for horizontal, and a vertical grating of 0.5 c/deg produced the maximum activity. These results are compared with those of Maffei and Fiorentini (1974); the differences between our results and theirs may be attributable to the degree of variability in spatial frequency and orientation during rearing, and to the duration of exposure.
小猫在黑暗环境中饲养，仅暴露于三种空间周期性的垂直条纹图案下：1. 单个、间隔较宽的黑色条纹；2. 由大的空白区域分隔开的规则垂直光栅的宽区域；3. 空间频率为0.5周/度的均匀连续光栅。在每种情况下，视觉皮层中记录的细胞的偏好取向分布都存在垂直偏向。对单个神经元对不同空间频率光栅的对比敏感度进行了定量分析。在暴露于0.5周/度均匀光栅的小猫中，许多细胞在接近0.5周/度时具有最大敏感度，就像正常猫中的细胞一样。频率高于0.3周/度的垂直光栅诱发的枕叶电位幅度始终大于水平光栅诱发的电位幅度，0.5周/度的垂直光栅产生最大活动。将这些结果与马费伊和菲奥伦蒂尼（1974年）的结果进行了比较；我们的结果与他们的结果之间的差异可能归因于饲养期间空间频率和取向的变化程度以及暴露持续时间。
