Does the magnocellular octaval nucleus process auditory information in the toadfish, Opsanus tau?
Does the magnocellular octaval nucleus process auditory information in the toadfish, Opsanus tau?
复制标题
蟾蜍 Opsanus tau 的大细胞八核核是否处理听觉信息？
DOI：
10.1007/s00359-013-0799-5
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Fay,RichardR
中科院分区：
文献类型：
--
作者：
Edds-Walton,PeggyL;Matos,SolymarRivera;Fay,RichardR
Previous work on auditory processing inOpsanus tauhas focused on the descending octaval nucleus; however, the magnocellular octaval nucleus receives similar inputs from the otolithic endorgans. The purpose of this study was to assess whether cells in any of the three subdivisions of the magnocellular nucleus respond to auditory frequencies and encode sound source direction. Extracellular recording sites were chosen based on anatomical landmarks, and neurobiotin injections confirmed the location of auditory sites in subdivisions of the magnocellular nucleus. In general, the auditory cells in M2 and M3 responded best to frequencies at or below 100 Hz. Most auditory cells responded well to directional stimuli presented along axes in the horizontal plane. Cells in M3 (not M2) also responded to lateral line stimulation, consistent with otolithic endorgan and lateral line inputs to M3. The convergence of auditory and lateral line inputs in M3, the lack of Mauthner cells in this species, and previous evidence that the magnocellular nucleus does not contribute to ascending auditory pathways suggest to us that the large cells of M3 may play a role in rapid behavioral responses to particle motion stimuli in oyster toadfish.
