Dean A F
Exp Brain Res. 1981;44(4):437-40. doi: 10.1007/BF00238837.
The relationship between the variance and mean rate of discharges of simple cells in the cat striate cortex has been examined when mean rate was varied by changing either stimulus spatial frequency or contrast. In both cases, the variance was related to the mean discharge rate by an exponent of about 1.15; the relation was thus roughly linear. The discharge variance was on average 1.7 times the mean rate for data obtained from measurements of the neurones' spatial frequency tuning curves, and 1.48 times the mean for data from the response-contrast determination. However, this difference was not statistically significant.
当通过改变刺激空间频率或对比度来改变平均放电率时，研究了猫纹状皮层中简单细胞放电的方差与平均放电率之间的关系。在这两种情况下，方差与平均放电率的指数关系约为1.15；因此，这种关系大致呈线性。对于从神经元空间频率调谐曲线测量中获得的数据，放电方差平均是平均放电率的1.7倍；对于从响应对比度测定中获得的数据，放电方差平均是平均放电率的1.48倍。然而，这种差异在统计学上并不显著。
