Neural Processing in the Bush-Cricket Auditory Pathway
Neural Processing in the Bush-Cricket Auditory Pathway
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DOI：
10.1007/978-3-642-40462-7_9
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
A. Stumpner;M. Nowotny
中科院分区：
文献类型：
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作者：
A. Stumpner;M. Nowotny
蟋蟀的耳朵长在胫骨前部，感觉器官位于两个鼓膜之间。一个能放大高频的听觉气管将声音引导到感觉器官。一组线性排列的初级听觉神经元的功能类似于滤波器组，用于频率辨别，并且还支持强度辨别。在附着细胞水平，行波可能有助于听觉传入的频率调谐。第一级中枢听觉处理的特征在于感觉神经元会聚到胸部局部和节间中间神经元上，并且通过突触前和突触后抑制来成形。调谐到载波频率的中间神经元是处理种内通信信号的主要候选者。其他神经元非常适合蝙蝠检测和在一个神经元听觉流隔离同种和蝙蝠的电话被证明。听觉脑神经元揭示了在胸神经节中没有遇到的处理特性。
Bush-crickets have their ears in the front tibia with the sensory organ located between two eardrums. An acoustic trachea that amplifies higher frequencies guides sound towards the sensory organ. A linearly arranged set of primary auditory neurons functions like a filter bank, for frequency discrimination and additionally supports intensity discrimination. At the level of attachment cells, a travelling wave might contribute to the frequency tuning of the auditory afferents. The first level of central auditory processing is characterised by convergence of sensory neurons onto thoracic local and intersegmental interneurons and is shaped by presynaptic and postsynaptic inhibition. Interneurons tuned to the carrier frequency are prime candidates for processing intraspecific communication signals. Other neurons are well suited for bat detection and in one neuron auditory stream segregation of conspecific and bat calls was demonstrated. Auditory brain neurons reveal processing properties not encountered in thoracic ganglia.