Song-selective auditory input to a forebrain vocal control nucleus in the zebra finch.
Song-selective auditory input to a forebrain vocal control nucleus in the zebra finch.
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斑胸草雀前脑声音控制核的歌曲选择性听觉输入。
DOI：
10.1002/neu.480240407
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Yohay,KH
中科院分区：
文献类型：
--
作者：
Vicario,DS;Yohay,KH
鸣禽的发声运动通路核中的神经元在一个这样的核中有反应，即结构健壮体（RA），其特征是在清醒和麻醉的成年雄性斑胸草雀以及从前新纹状体（LMAN）或高级声乐中心（HVC）的大细胞核外侧部分接收到RA输入损伤的鸟类中进行多单元记录。在清醒的鸟类中，类风湿性关节炎神经元对歌曲刺激有高水平的自发活动和强烈的听觉反应。鸟类对自己的歌声（BOS）的反应明显大于反向播放的歌声（REV）或同种鸟的歌声（CON）。在氯胺酮-二嗪麻醉下，自发活动减少，反应潜伏期增加，对BOS、REV和CON的反应难以区分。在聚氨酯麻醉下获得的反应与清醒的鸟类相似。因此，RA的听觉反应模式和选择性取决于动物的状态。在LMAN对RA的输入受损后，RA的听觉反应在质量上没有变化，这表明该途径并不需要在声音产生途径上偏好BOS的感觉加工。我们的研究结果表明，LMAN以外的输入可能是RA听觉反应的主要原因。HVC的直接投射是歌曲选择性听觉信息到达RA的最可能途径，因为HVC的损伤使RA的听觉反应消失。©1993 John Wiley & Sons, Inc
Neurons in nuclei on the motor pathway for vocalizations in songbirds are known to responses in one such nucleus, robustus archistriatalis (RA), were characterized by making multi‐unit recordings in awake and anesthetized adult male zebra finches and in birds that had received lesions of the input to RA from the lateral part of the magnocellular nucleus of the anterior neostriatum (LMAN) or the Higher Vocal Center (HVC). In awake birds, RA neurons have a high level of spontaneous activity and vigorous auditory responses to song stimuli. Significantly greater responses are seen to the bird's own song (BOS) than to BOS played in reverse (REV) or to the songs of conspecifics (CON). Under ketamine‐xylazine anesthesia, spontaneous activity is reduced, response latency increases and responses to BOS, REV and CON are indistinguishable. Responses obtained under urethane anesthesia are similar to those seen in awake birds. Thus, the pattern and selectivity of auditory responses in RA depend on the animal's state. Auditory responses in RA are qualitatively unchanged following lesion of the input to RA from LMAN, indicating that this pathway is not required for the sensory processing that underlies the preference for BOS on the vocal production pathway. Our results show that an input other than that from LMAN must be primarily responsible for auditory responses in RA. The direct projection form HVC is the most likely pathway by which song selective auditory information arrives in RA, since lesioning HVC abolished auditory responses in RA. © 1993 John Wiley & Sons, Inc.