| 大蹄蝠回声定位信号特征与下丘神经元频率调谐 |
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| 引用本文： | 付子英,唐佳,JEN Philip Hung-Sun,陈其才.大蹄蝠回声定位信号特征与下丘神经元频率调谐[J].动物学杂志,2009,44(1):128-132. |
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| 作者姓名： | 付子英 唐佳 JEN Philip Hung-Sun 陈其才 |
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| 作者单位： | 1. 华中师范大学生命科学学院遗传调控与整合生物学湖北省重点实验室,武汉,430079
2. Division of Biological Sciences and Interdisciplinary Neumscience Program,University of Missouri-Columbia,MO 65211,USA |
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| 基金项目： | 国家自然科学基金，美国密苏里大学生物科学系基金 |
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| 摘 要： | 采用超声监测仪录制超声信号和细胞外电生理记录下丘神经元的频率调谐曲线(frequency tuningcurqes,FTCs)的方法,探讨了大蹄蝠(Hipposideros armiger)回声定位信号与下丘(inferior colliculus,IC)神经元频率调谐之间的相关性.结果发现,大蹄蝠回声定位叫声为恒频-调频(consrant frequency-frequenevmodulated,CF-FM)信号,一般含有2-3个谐波,第二谐波为其主频,cF成分频率(Mean±SD,n=18)依次为:(33.3 4±0.2)、(66.5±0.3)、(99.4 4±0.5)kHz;电生理实验共获得72个神经元的频率调谐曲线,Q10-dB值的范围是0.5-95.4(9.2±14.6,rg=72),最佳频率(best frequency,BF)在回声定位主频附近的神经元具有尖锐的频率调谐特性.结果表明,大蹄蝠回声定位信号与下丘神经元频率调谐存在相关性,表现为最佳频率在回声定位信号主频附近的神经元频率调谐曲线的Q10-dB值较大,具有很强的频率分析能力.
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| 关 键 词： | 回声定位信号 下丘神经元 频率调谐 大蹄蝠 |
| 收稿时间： | 8/9/2008 12:00:00 AM |
| 修稿时间： | 2008/11/12 0:00:00 |
Spectrum Characteristics of Echolocation Call and Frequency Tuning of Inferior Collicular Neurons in Hipposideros armiger |
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| FU Zi-Ying,TANG Ji,JEN Philip Hung-Sun and CHEN Qi-Cai.Spectrum Characteristics of Echolocation Call and Frequency Tuning of Inferior Collicular Neurons in Hipposideros armiger[J].Chinese Journal of Zoology,2009,44(1):128-132. |
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| Authors: | FU Zi-Ying TANG Ji JEN Philip Hung-Sun and CHEN Qi-Cai |
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| Institution: | College of Life Sciences and Hubei Key Laboratory of Genetic Regulation of Integrative Biology,Central China Normal University,Wuhan 430079,China;College of Life Sciences and Hubei Key Laboratory of Genetic Regulation of Integrative Biology,Central China Normal University,Wuhan 430079,China;Division of Biological Sciences and Interdisciplinary Neuroscience Program,University of Missouri-Columbia,MO 65211,USA;College of Life Sciences and Hubei Key Laboratory of Genetic Regulation of Integrative Biology,Central China Normal University,Wuhan 430079,China |
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| Abstract: | In order to explore the relationship between the echolocation call or signal of leaf-nosed bats (Hipposideros armiger) and frequency tuning of inferior collicular neurons, the echolocation calls of the leaf-nosed bats were recorded using bat detector and frequency tuning curves (FTCs) of inferior collicular (IC) neurons were obtained by extracellular recording. The results showed that the echolocation calls of the leaf-nosed bats were constant frequency-frequency modulation (CF-FM) signals with 2-3 harmonic... |
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| Keywords: | Echolocation call Inferior collicular neurons Frequency tuning Hipposideros armiger |
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