Central auditory neurophysiology of a sound-producing fish: the mesencephalon of Pollimyrus isidori (Mormyridae).
Central auditory neurophysiology of a sound-producing fish: the mesencephalon of Pollimyrus isidori (Mormyridae).
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发声鱼的中枢听觉神经生理学：Pollimyrus isidori（Mormyridae）的中脑。
DOI：
10.1007/bf00189392
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Crawford,JD
中科院分区：
文献类型：
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作者：
Crawford,JD
本文描述了P. isidori，一种发声的鱼。长颌鱼有一个专门的压力敏感的听觉周边，解剖学研究表明，声音信息被中继到中脑核MD。用短纯音和咔哒声刺激鱼，并在细胞外记录MD神经元的反应。听觉神经元的最佳频率（BF）和最佳灵敏度（BS）属于这些鱼的自然通信声音的频率和水平的范围内。BS在0至-35 dB的范围内（参考。1.0达因/厘米2）。许多神经元被调谐（Q10 dB：2-6），并且具有在100-300 Hz范围内的BF，其中动物的声音具有其峰值能量。遇到了一系列不同的生理细胞类型，包括相位，持续和复杂的神经元。一些持续的神经元表现出强烈的相位锁定的音调。许多神经元表现出非单调的速率-水平函数。频率侧翼的BF往往会导致减少自发活动，表明抑制。许多神经元表现出良好的代表点击列车，和一些显示的时间代表点击间隔误差小于1毫秒。
This paper describes the auditory neurophysiology of the mesencephalon ofP. isidori, a soundproducing mormyrid fish. Mormyrids have a specialized pressure-sensitive auditory periphery, and anatomical studies indicate that acoustic information is relayed to the mesencephalic nucleus MD. Fish were stimulated with tone bursts and clicks, and responses of MD neurons were recorded extracellularly. Auditory neurons had best frequencies (BF) and best sensitivities (BS) that fell within the range of frequencies and levels of the natural communication sounds of these fish. BSs were in the range of 0 to — 35 dB (re. 1.0 dyne/cm2). Many of the neurons were tuned (Q10 dB: 2–6), and had BFs in the range of 100–300 Hz where the animal's sounds have their peak energy. A range of different physiological cell types were encountered, including phasic, sustained, and complex neurons. Some of the sustained neurons showed strong phase-locking to tones. Many neurons exhibited non-monotonic rate-level functions. Frequencies flanking the BF often caused a reduction in spontaneous activity suggesting inhibition. Many neurons showed excellent representation of click-trains, and some showed a temporal representation of inter-click-intervals with errors less than 1 ms.