Eggermont J J, Smith G M
Department of Psychology, University of Calgary, Alberta, Canada.
Neuroreport. 1995 Nov 13;6(16):2125-8. doi: 10.1097/00001756-199511000-00007.
Correlations between the firings of simultaneously recorded single units in auditory cortex may result from neural connectivity as well as covariation in firing rate. We present a predictor for the rate covariance part of the correlogram based on spike counts in 50 ms. Data were collected from 604 neurone pairs recorded under spontaneous conditions in primary auditory cortex of seven juvenile (30-70 days) and nine adult cats. A total of 341 pairs (56%) had a peak correlation coefficient significantly different from zero. The rate covariance comprised on average 73% of the peak correlation for single electrode pairs and 67% of that for dual electrode pairs. The remaining event correlation was significantly different from zero in 150 of the pair correlograms tested.
听觉皮层中同时记录的单个神经元放电之间的相关性可能源于神经连接以及放电率的协变。我们基于50毫秒内的尖峰计数，提出了一种用于相关图中速率协变部分的预测器。数据是从七只幼年（30 - 70天）和九只成年猫的初级听觉皮层在自发条件下记录的604对神经元中收集的。总共341对（56%）的峰值相关系数显著不同于零。对于单电极对，速率协变平均占峰值相关性的73%，对于双电极对则占67%。在测试的成对相关图中，其余的事件相关性在150个中显著不同于零。
