EXCITATION AND INHIBITION IN COCHLEAR NUCLEUS .2. FREQUENCY-MODULATED TONES
EXCITATION AND INHIBITION IN COCHLEAR NUCLEUS .2. FREQUENCY-MODULATED TONES
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DOI：
10.1152/jn.1968.31.4.537
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发表时间：
1968-01-01
影响因子：
2.5
通讯作者：
GERSTEIN, GL
中科院分区：
文献类型：
--
作者：
ERULKAR, SD;BUTLER, RA;GERSTEIN, GL
在静态和频率调制的音调刺激下，对猫耳蜗核的神经元进行细胞外和细胞内的记录。大多数神经元对缓慢频率调制刺激的反应模式可以通过它们对固定频率的音调爆发的反应来预测。在缓慢的频率调制刺激下，发现了三种不同的一般类型的放电模式。这些发射模式可以根据它们在上升或下降音调方面的对称性来分类；它们可能表明所研究的神经元上突触末梢的几何排列不同。在较高的频率调制速率下，发射模式受到df/dt和重复频率的影响。采用梯形调制频率，考察了df/dt的影响。几种方法来检查膜电位的反应与刺激周期的不同部分显示。通常在膜电位和放电模式之间只有微弱的相关性。
Extracellular and intra-cellular recordings were made from neurons of the cochlear nucleus of the cat during presentation of both static and frequency modulated tonal stimuli. The firing patterns of most of these neurons in response to slow frequency modulation of the stimulus may be predicted from their response to tone bursts of fixed frequency. Three different general types of firing pattern were found in response to slow frequency modulation of the stimulus. These firing patterns may be classified according to their symmetry with regard to rising or falling tones; they may suggest different geometric arrangements of synaptic endings on the neuron under study. At higher rates of frequency modulation, the firing patterns are influenced both by df/dt and by repetition rate. The effect of df/dt was examined by using trapezoidal modulation of frequency. Several methods for examining the response of the membrane potential in relation to different portions of the stimulus cycle are shown. Frequently there is only a weak correlation between membrane potentials and firing patterns.