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juvenile bat
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  幼年蝙蝠
     AUDITORY SPACE REPRESENTATION IN THE INFERIOR COLLICULUS OF JUVENILE BAT,RHINOLOPHUS ROUXI
     幼年蝙蝠下丘神经元的听空间特性
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  “juvenile bat”译为未确定词的双语例句
     Auditory Response Properties in the Inferior Colliculus of Juvenile Bat, Phinolophus Rouxi
     幼年菊头蝠下丘神经元的听反应特性
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  相似匹配句对
     Anisometropia of juvenile
     青少年儿童屈光参差临床分析
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     The Bat and the Weasel
     蝙蝠和黄鼠狼
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     On juvenile wood
     关于幼龄材问题
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     Auditory Response Properties in the Inferior Colliculus of Juvenile Bat, Phinolophus Rouxi
     幼年菊头蝠下丘神经元的听反应特性
短句来源
     AUDITORY SPACE REPRESENTATION IN THE INFERIOR COLLICULUS OF JUVENILE BAT,RHINOLOPHUS ROUXI
     幼年蝙蝠下丘神经元的听空间特性
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Under free-field acoustic stimulus conditions, we studied the responses of inferior collicular neurons(IC)to acoustic stimulus(40ms, 0.5ms rise-decay times)in the adult and juvenile(6-8days)rufous horseshoe bat,Rhinolophus rowxi.A total of 162 and 471 IC neurons were isolated from the juvenile and adult bats respectively.In general,IC neurons from the juvenile bats had higher minimum thresholds and longer response latencies than those from the adult bats.The best frequencies(BFs)of...

Under free-field acoustic stimulus conditions, we studied the responses of inferior collicular neurons(IC)to acoustic stimulus(40ms, 0.5ms rise-decay times)in the adult and juvenile(6-8days)rufous horseshoe bat,Rhinolophus rowxi.A total of 162 and 471 IC neurons were isolated from the juvenile and adult bats respectively.In general,IC neurons from the juvenile bats had higher minimum thresholds and longer response latencies than those from the adult bats.The best frequencies(BFs)of the overwhelming majority of IC neurons of the adult bats were 88 to 90 kHz but they were 43 to 47 kHz in the juvenile bats.Although the BFs of IC neurons sequentially isolated by the advancement of an orthogonally penetrating electrode systematically increased from low to high in the adult bats.such a tonotopic organization along the dors-oventral axis of the IC was not observed in the juvenile bats.IC neurons of juvenile bats also tuned to a broader band of frequencies than those of adult bats.These data provide evidence for a postnatal developmental change of auditory signal processing in bats.

实验在出生6—8天的8只幼龄鲁氏菊头蝠(Rhinolophus rouxi)上进行。使用玻璃微电极记录中脑下丘听神经元对超声信号的反应。共观察了162个听单位,它们对超声反应的最佳频率分布范围为25.8—60.9千赫,多数集中在43.0—47.0千赫。反应的潜伏期在6.0—38.0毫秒,平均为15.4±5.2毫秒。反应的最低阈值在25—84dB,平均为69.8±10.3dB.这些神经元对超声刺激的调谐曲线都较宽阔,故Q10-dB值都较小。当微电极由下丘表面垂直下插时,所记录到的神经元的最佳频率与记录深度之间不存在相关关系,即没有音调筑构现象。听神经元的这些特性与同种成年动物构成显著差异。

Using electrophysiological technique, we studied the responses of inferior collicular(IC) neurons to acoustic stimulus in the juvenile (4th postnatal week) and adult rufous horseshoe bat, Rhinolophus rouxi. A total of 148 and 153 IC neurons were isolated from the juvenileand adult bats respectively. Response patterns of IC neurons from the juvenile bats could beclassified into three types but most neurons (97.86%) fired phasically. IC neurons from the juvenile bats had lower best...

Using electrophysiological technique, we studied the responses of inferior collicular(IC) neurons to acoustic stimulus in the juvenile (4th postnatal week) and adult rufous horseshoe bat, Rhinolophus rouxi. A total of 148 and 153 IC neurons were isolated from the juvenileand adult bats respectively. Response patterns of IC neurons from the juvenile bats could beclassified into three types but most neurons (97.86%) fired phasically. IC neurons from the juvenile bats had lower best frequencies (BFs), longer response latencies and higher thresholds(MTs) than those from the adult bats. The average values of BFs、 response latency and MTswere 40.42±19.46KHz. 12.31±3.13ms and 41.41±25 .69dB respectively. Tuning curve of ICneurons from the juvenile bats were either narrow or broad, but adult bat's were narrow only.These data provide evidence for a postnatal developmental change of auditory signal processingin bat.

运用微电极记录方法,考察了幼年(4周龄)和成年鲁氏菊头幅(Rhinolophusrouxi)下丘神经元的听反应特性。共观察了301个神经元,其中幼年蝙蝠148个,成年蝙蝠153个。结果表明,4周龄的幼年蝙蝠,其下丘神经元的听反应型式可分为三类,主要表现为时相性反应(占97.68%)。神经元的最佳频率分布范围为100~81.2kHz,多数集中在30~40kHz。所反应的潜伏期在7~20ms之间,平均为12.31±3.13ms。听反应的最低阈值为-39.0~77.4dB,平均为41.41±25.69dB。神经元的调谐曲线既有宽阔型,也有狭窄型,还有部分神经元的调谐曲线具有多个敏感峰。幼年蝙蝠下丘听神经元的这些特性均与成年蝙蝠形成显著差异。结果提示,鲁氏菊头蝠中枢神经系统听觉功能出生后有一个发育过程。

 
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