Auditory responses of units in the ovoid nucleus and cerebrum (field L) of the ring dove.
Auditory responses of units in the ovoid nucleus and cerebrum (field L) of the ring dove.
复制标题
环斑鸠卵核和大脑（L区）单位的听觉反应。
DOI：
10.1016/0006-8993(70)90104-6
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发表时间：
1970
期刊：
影响因子：
2.9
通讯作者：
M. Biederman
中科院分区：
文献类型：
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作者：
M. Biederman
在卵圆形核的神经元的反应是相似的下丘单位以前研究的所有单位响应纯音，几乎总是由一个保持增加或减少放电率没有显着的发病或偏移瞬变。卵圆形核中的一些单位只兴奋或只抑制音调;其余的表现出复杂的模式的兴奋和抑制的频率和强度的函数，但有时有一个“最佳频率”的反应是相对独立的强度。在大多数卵核神经元测试，刺激对侧耳单独产生相同或类似的，但比同侧刺激更强的效果。在两种情况下，对侧和同侧的反应是完全不同的。相反，哺乳动物内侧膝状体神经元，双耳刺激卵核神经元是没有更多的，往往更少，比单耳stimulation.Of 40个单位分离在大脑（字段L），超过一半的有效性没有响应的声音。其余的没有或只是偶尔兴奋的音调，但更可靠地驱动嘶嘶声，点击，吱吱声等这种变化的反应字符是类似的听觉皮层和前皮质中心之间发现哺乳动物。
Responses of neurons in the ovoid nucleus were similar to those of inferior colliculus units previously studied in that all units responded to pure tones, almost always by a maintained increase or decrease in discharge rate without marked onset or offset transients. Some units in the ovoid nucleus were only excited or only inhibited by tones; the remainder showed complex patterns of excitation and inhibition as a function of frequency and intensity, but sometimes had a ‘best frequency’ where the response was relatively independent of intensity. Units with complex response patterns were more common in the ovoid nucleus than in the inferior colliculus.In most ovoid nucleus neurons tested, stimulation of the contralateral ear alone produced the same or a similar but stronger effect than ipsilateral stimulation. In two cases contralateral and ipsilateral responses were quite different. In contrast mammalian medial geniculate neurons, binaural stimulation of ovoid nucleus neurons was no more, and frequently less, effective than monaural stimulation.Of 40 units isolated in the cerebrum (Field L), over half did not respond to sound. The rest were not or were only sporadically excited by tones, but were more reliably driven by hisses, clicks, squeaks, etc. This change in response character is similar to that found between auditory cortex and precortical centers in mammals.