Responses of neurons in the ventral nucleus of the lateral lemniscus to sinusoidally amplitude modulated tones.
Responses of neurons in the ventral nucleus of the lateral lemniscus to sinusoidally amplitude modulated tones.
复制标题
外侧丘系腹核神经元对正弦调幅音调的反应。
DOI：
10.1152/jn.00442.2006
复制
发表时间：
2006
影响因子：
2.5
通讯作者：
Batra,Ranjan
中科院分区：
文献类型：
--
作者：
Batra,Ranjan
声音振幅的波动在我们对音高和声学空间的感知中起着重要作用，但其神经分析尚未完全阐明。外侧丘系腹侧核（VNLL）参与了声音的这种时间特征的处理。本研究探讨的神经元在VNLL的未麻醉的兔子正弦振幅调制的音调，一种类型的刺激，经常被用来调查编码的时间信息的反应。响应的调制传递函数以两种方式计算：基于放电率（rMTF）和同步到包络线（tMTF）。在各种rMTF中，两种类型是容易识别的：平坦和带通。表现出这些类型的rMTF的神经元的反应在几个方面不同。具有平坦rMTF的神经元通常具有中等的自发活动率、对短纯音的持续反应以及低通或带通tMTF。具有带通rMTF的神经元通常具有低自发活动、对短纯音的起始反应和平坦的tMTF。绝大多数与调制包络强烈同步。具有带通rMTF的神经元的最佳调制频率从14 Hz扩展到283 Hz。VNLL中存在带通rMTF的神经元表明，该核在将用于较低结构的调制频率的时间代码转换为用于较高听觉通路的基于速率的代码中起作用。具有更复杂调制传递函数的大量神经元表明VNLL具有其他功能。
Fluctuations in the amplitude of a sound play an important role in our perception of pitch and acoustic space, but their neural analysis has not been fully elucidated. The ventral nucleus of the lateral lemniscus (VNLL) has been implicated in the processing of such temporal features of a sound. This study examines responses of neurons in the VNLL of unanesthetized rabbits to sinusoidally amplitude modulated tones, a type of stimulus that has often been used to investigate encoding of temporal information. Modulation transfer functions of responses were calculated in two ways: based on discharge rates (rMTFs) and on synchronization to the envelope (tMTFs). Among the variety of rMTFs, two types were readily identifiable: flat and band-pass. The responses of neurons exhibiting these types of rMTF differed in several ways. Neurons with flat rMTFs typically had moderate rates of spontaneous activity, sustained responses to short tone bursts, and low-pass or band-pass tMTFs. Neurons with band-pass rMTFs typically had low spontaneous activity, onset responses to short tone bursts, and flat tMTFs. The vast majority synchronized strongly to the modulation envelope. The best modulation frequencies of neurons with band-pass rMTFs extended from 14 to 283 Hz. The presence of neurons with band-pass rMTFs in the VNLL suggests that this nucleus plays a role in converting the temporal code for modulation frequency used in lower structures into a rate-based code for use higher in the auditory pathway. The substantial number of neurons with more complex modulation transfer functions indicates that the VNLL has other functions.
登录
查看更多内容
大鼠耳蜗核中幅度和频率调制声音的编码。
DOI：
--
发表时间：
1972
期刊：
Acta Physiologica Scandinavica
影响因子：
--
作者：
Aage R. Møller
通讯作者：
Aage R. Møller
对外侧丘系腹侧核内侧部分的耳间时间差异敏感的神经元。
DOI：
10.1152/jn.1997.78.1.511
发表时间：
1997
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
Batra,R;Fitzpatrick,DC
通讯作者：
Fitzpatrick,DC
大鼠外侧丘系腹核神经元的生理特性：内在膜特性和突触反应。
影响因子：
2.5
作者：
S. Wu
通讯作者：
S. Wu
大鼠外侧丘系腹核神经元对单耳和双耳音爆发的反应。
影响因子：
2.5
作者：
Huiming Zhang;J. Kelly
通讯作者：
J. Kelly
影响因子：
2.5
作者：
RHODE, WS;GREENBERG, S
通讯作者：
GREENBERG, S