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邹丽芳,李琳,危晨雪,唐佳.2015.普氏蹄蝠下丘CF-CF联合敏感神经元的声反应.动物学杂志,50(1):9-15.
普氏蹄蝠下丘CF-CF联合敏感神经元的声反应
Response Properties of CF-CF Combination Sensitive Neurons in Inferior Colliculus of Pratt’s Roundleaf Bat
投稿时间:2014-03-27  修订日期:2014-12-17
DOI:DOI: 10.13859/j.cjz.201501002
中文关键词:  CF-CF联合敏感神经元  易化  抑制  下丘  普氏蹄蝠
英文关键词:CF-CF combination sensitive neuron  Facilitation  Inhibition  Inferior colliculus  Pratt’s leaf-nosed bat
基金项目:国家自然科学基金项目(大蹄蝠适应多普勒频移补偿行为的生理机制研究. #31000959)
作者单位E-mail
邹丽芳 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 865162711@qq.com 
李琳 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  
危晨雪 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  
唐佳 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 bobaytang2013@126.com 
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中文摘要:
      为了研究普氏蹄蝠(Hipposideros pratti)下丘(inferior colliculus, IC)中CF-CF联合敏感神经元声反应特性,以及易化型和抑制型CF-CF联合敏感神经元在IC高频表征区神经元中所占的比例,实验记录了普氏蹄蝠IC神经元在不同频率和声强下的单声反应以及在不同延迟下的双声反应。本实验采用在体细胞内电生理技术从7只听力正常的蝙蝠上共获得77个IC声敏感神经元。所获得的数据经过处理并应用SigmaPlot 10.0软件作图。研究结果显示77个神经元中,37(48.1%)个为CF-CF联合敏感神经元,且多数为抑制型(24/37)(图2B),少数为(13/37)易化型(图2A)。实验结果说明普氏蹄蝠IC中既存在易化型也存在抑制型CF-CF联合敏感神经元,其中抑制型CF-CF联合敏感神经元比易化型所占比例更高。这些CF-CF联合敏感神经元有助于蝙蝠在巡航过程中处理回声信息时进行频谱和时相的整合。
英文摘要:
      To study the response properties of constant frequency-constant frequency (CF-CF) combination sensitive neurons in inferior colliculus (IC) of pratt’s roundleaf bat (Hipposideros pratti), and the proportions of facilitatory and inhibitory CF-CF combination sensitive neurons in high frequency representation region of IC, single CF tones with different frequencies and intensities and double CF tones with different interpulse intervals were used to study the responses of combination sensitive neurons in IC. The responses of 77 IC neurons of 7 bats with normal hearing were recorded by intracellular recording method. All data obtained under different stimulation conditions were processed and plotted using Sigmaplot 10.0. Among 77 recorded neurons,37 (48.1%) of them were the CF-CF combination sensitive neurons. Most neurons (24/37) were the inhibitory CF-CF combination sensitive neurons (Fig. 2B) and 13 were the facilitatory (Fig. 2A). These results indicated that there were both facilitatory and inhibitory CF-CF combination sensitive neurons in IC of pratt’s roundleaf bat. And the proportion of inhibitory CF-CF combination sensitive neurons was larger than facilitatory. The CF-CF combination sensitive neurons may play an important role in temporal and spectral integration of information in the echoes from the targets during the navigation of bats.
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