Characteristics of frequency response areas of neurons in primary auditory cortex of rats

张永海; 隋建峰; 刘国龙; 李志方; 熊鹰

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Characteristics of frequency response areas of neurons in primary auditory cortex of rats

更新时间：2026-01-09

- Characteristics of frequency response areas of neurons in primary auditory cortex of rats
- Journal of Army Medical University Vol. 29, Issue 7, Pages: 576-578(2007)
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  CLC： R338.3;R338.8;R339.16
- Published：2007
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张永海,隋建峰,刘国龙,李志方,熊鹰.大鼠初级听皮层神经元兴奋性频率反应域的特征[J].陆军军医大学学报(原第三军医大学学报),2007,29(07):576-578.

　ZHANG Yong-hai,SUI Jian-feng,LIU Guo-long,LI Zhi-fang,XIONG Ying.Characteristics of frequency response areas of neurons in primary auditory cortex of rats[J].J Amry Med Univ (J Third Mil Med Univ),2007,29(07):576-578.
张永海,隋建峰,刘国龙,李志方,熊鹰.大鼠初级听皮层神经元兴奋性频率反应域的特征[J].陆军军医大学学报(原第三军医大学学报),2007,29(07):576-578. DOI：

　ZHANG Yong-hai,SUI Jian-feng,LIU Guo-long,LI Zhi-fang,XIONG Ying.Characteristics of frequency response areas of neurons in primary auditory cortex of rats[J].J Amry Med Univ (J Third Mil Med Univ),2007,29(07):576-578. DOI：

摘要

目的探索大鼠初级听皮层神经元的兴奋性频率反应域的特征。方法应用细胞外记录方法，用钨丝微电极记录大鼠初级听皮层神经元的单位放电活动，并用Brainware分析软件采集得到该神经元的频率－强度反应域即兴奋性频率反应域。结果在大鼠初级听皮层共记录到106个神经元的单位放电活动，其最佳频率的范围从2～45 kHz。根据神经元的兴奋性频率反应域形状的不同可将它们分为6类： U型（29.5％），V型（20％），低尾高锐型（19％），封闭型（15％），低频倾斜型（7.5％），多峰型（9％）。结论大鼠初级听皮层神经元的兴奋性频率反应域具有多种类型，而不同的兴奋性频率反应域的形成机制可能相同。

Abstract

Objective To investigate the characteristics of frequency response areas of neurons in the primary auditory cortex. Methods Extracellular multi-unit activities were recorded in the primary auditory cortex of the rats with tungsten microelectrodes.The frequency-intensity response areas were acquired and analyzed by the Brainware software. Results We recorded totally 106 neurons′ activities from 15 SD rats. Their best frequencies ranged from 2 kHz to 45 kHz. According to the shape of the excitatory frequency response areas (eFRA)

we could classify them into 6 classes

that is

U-shaped (29.5%)

V-shaped (20%)

lower-tailed-upper-sharp (19%)

circumscribed (15%)

slant-lower (7.5%) and multi-peaked (9%). Conclusion The shapes of the excitatory frequency response areas of the neuron in the primary auditory cortex are various and might result from the same mechanisms.

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