Auditory Pontine Grey: Connections and Response Properties in the Horseshoe Bat
Auditory Pontine Grey: Connections and Response Properties in the Horseshoe Bat
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听觉桥灰：马蹄蝠的连接和响应特性
DOI：
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发表时间：
1991
影响因子：
3.4
通讯作者：
J. H. Casseday
中科院分区：
文献类型：
--
作者：
G. Schuller;E. Covey;J. H. Casseday
本研究探讨脑桥灰质作为听觉系统和小脑之间的联系在蝙蝠，Rhinolophus rouxi的作用。我们记录了脑桥灰质中单个神经元的反应特性，并在相同的制备中，将小麦胚芽凝集素-辣根过氧化物酶（WGA-HRP）注射到对声音有反应的区域。因此，功能证据与逆行和顺行转运相关。主要结果如下：（i）脑桥灰质中的所有听觉神经元都在回声定位呼叫的两个谐波相关频率范围之一内调谐。上范围对应于二次谐波的恒定频率和频率调制分量，但下范围仅对应于一次谐波的频率调制分量。有没有系统的tonotopic组织;（ii）放电模式是非常可变的，lavelets覆盖范围广，约有一半的神经元是双耳响应与兴奋从两个耳朵;（iii）大多数脑桥听觉神经元优先响应调频刺激;（iv）有大量的输入脑桥灰质从中央核的下丘;（v）脑桥灰质的皮质输入并不起源于音调组织的听觉皮质。输入是从一个背带区，专门用于处理组合的声音与特定的频率比和延迟;（六）从脑桥灰质的听觉区域的预测是广泛的小脑皮质内。这些数据表明，脑桥灰质将蝙蝠生物声纳信号的特定成分中包含的信息传递给小脑。
This study investigates the role of the pontine grey as a link between the auditory system and the cerebellum in the bat, Rhinolophus rouxi. We recorded response properties of single neurons in the pontine grey and, in the same preparation, injected wheat germ agglutinin ‐ horseradish peroxidase (WGA‐HRP) in areas responsive to sound. Thus the functional evidence was correlated with retrograde and anterograde transport. The main results are: (i) all auditory neurons in the pontine grey are tuned within one of two harmonically related frequency ranges of the echolocation call. The upper range corresponds to the constant frequency and frequency modulated components of the second harmonic, but the lower range corresponds only to the frequency modulated component of the first harmonic. There is no systematic tonotopic organization; (ii) discharge patterns are extremely variable, latencies cover a wide range, and about half of the neurons are binaurally responsive with excitation from both ears; (iii) most pontine auditory neurons respond preferentially to frequency modulated stimuli; (iv) there is massive input to the pontine grey from the central nucleus of the inferior colliculus; (v) cortical input to the pontine grey does not originate in tonotopically organized auditory cortex. The input is from a dorsal belt area that is specialized for processing combinations of sounds with specific frequency ratios and delays; (vi) projections from the auditory region of the pontine grey are widespread within the cerebellar cortex. The data suggest that the pontine grey transmits to the cerebellum information contained in specific components of the bat's biosonar signal.
影响因子：
2.5
作者：
N. Suga;J. Horikawa
通讯作者：
N. Suga;J. Horikawa
影响因子：
2.5
作者：
OPTICAN, LM;ROBINSON, DA
通讯作者：
ROBINSON, DA
脑桥刺激引起的眼球运动：与视觉触发的眼跳的相互作用。
影响因子：
2.5
作者：
Sparks,DL;Mays,LE;Porter,JD
通讯作者：
Porter,JD