Pelleg-Toiba R, Wollberg Z
Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Israel.
J Basic Clin Physiol Pharmacol. 1991 Oct-Dec;2(4):257-72. doi: 10.1515/jbcpp.1991.2.4.257.
Single cells in the primary auditory cortex of the awake squirrel monkey were tested for their responses to intraspecific communication calls presented to the monkey normally ("calls") and backwards ("llacs"). These two groups of signals were similarly effective in eliciting responses, and response patterns were of the same nature and equally diverse. In about 2% of the cells the time structure of a response to at least one "llac" was virtually a "mirror image" of the response to the corresponding "call". In about 34% of the cells, for at least one vocalization, at one intensity or other, the time distribution of response peaks closely approximated in time with the envelope of a particular spectral component of the call, corresponding with the cell's best frequency. These results suggest that complex sounds may be represented in the auditory cortex by the synchronized activity of functional cell ensembles in which differently tuned individual members are distributed throughout the cochleotopic space according to their best frequencies.
对清醒松鼠猴初级听觉皮层中的单个细胞进行测试，观察它们对以正常方式呈现给猴子的种内交流叫声（“叫声”）和倒放叫声（“slcall”）的反应。这两组信号在引发反应方面同样有效，并且反应模式具有相同的性质且同样多样。在约2%的细胞中，对至少一个“slcall”的反应时间结构实际上是对相应“叫声”反应的“镜像”。在约34%的细胞中，对于至少一种发声，在一种或其他强度下，反应峰值的时间分布在时间上与叫声特定频谱成分的包络紧密近似，这与细胞的最佳频率相对应。这些结果表明，复杂声音可能在听觉皮层中由功能性细胞集合的同步活动来表征，其中调谐不同的单个成员根据其最佳频率分布在整个耳蜗拓扑空间中。
