Shevelev I A, Sharaev G A
Neirofiziologiia. 1981;13(5):451-9.
Orientational tuning of singly units in the primary visual cortex of a nonanesthetized paralyzed cat was studied by usual criteria (number of spikes and maximal frequency of the response) and by "time slices" method. A computer plotted graphs of orientational tuning for successive time intervals with a step of 10 or 20 ms (differential slices) or for prolonged intervals with same step (integral slices). In both cases it was revealed that in all the investigated units orientational tuning markedly changed in time, most often in wideness of characteristic and in 87% of cases in preferred orientation range was detected: preferred orientation systematically moved for 15-112 degrees in successive moments during some tens of ms of the first and the second burst of spikes. A possible functional significance of the data revealed and the neurophysiological mechanisms are discussed.
采用常规标准（放电峰值数量和反应的最大频率）以及“时间切片”方法，研究了未麻醉的瘫痪猫初级视觉皮层单个神经元的方向调谐。计算机绘制了连续时间间隔（步长为10或20毫秒，微分切片）或相同步长的延长间隔（积分切片）的方向调谐图。在这两种情况下均发现，在所有被研究的神经元中，方向调谐随时间显著变化，最常见的是特征宽度变化，并且在87%的情况下检测到在偏好方向范围内有变化：在第一个和第二个放电峰值爆发的几十毫秒内，偏好方向在连续时刻系统地移动了15 - 112度。讨论了所揭示数据的可能功能意义以及神经生理机制。
