Tonotopic mapping in auditory cortex of the chinchilla
Tonotopic mapping in auditory cortex of the chinchilla
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DOI：
10.1016/0378-5955(96)00120-7
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发表时间：
1996-10-01
期刊：
影响因子：
2.8
通讯作者：
Mount, RJ
中科院分区：
文献类型：
--
作者：
Harrison, RV;Kakigi, A;Mount, RJ
使用单单元电生理学方法，我们绘制了龙猫听觉皮层的声音频率（或耳蜗位）表征。我们描述暴露该区域的手术方法。我们报告了六个受试者的地图，并注意到个体之间的形状存在很大差异。一般来说，主要区域具有耳蜗专题/音调组织，其中低频代表头侧，高频代表尾侧。主要区域的神经元具有与其他哺乳动物物种相当的潜伏和调谐特性。主听觉区（AI）前方的区域具有反向音调图，可能类似于其他物种中报道的前听觉场（AAF）。
Using single-unit electrophysiological methods we have mapped sound frequency (or cochleotopic) representation in the auditory cortex of the chinchilla. We describe the surgical approach to expose this area. We report on maps from six subjects and note a considerable variation in shape between individuals. In general, the primary area has a cochleotopic/tonotopic organization in which low frequencies are represented rostrally and higher frequencies caudally. Neurons in the primary area have latency and tuning properties comparable to other mammalian species. A region anterior to the primary (AI) auditory area has a reverse tonotopic map and may be analogous to the anterior auditory field (AAF) reported in other species.