TONOTOPIC ORGANIZATION OF THE AUDITORY NEUROPIL IN THE BUSHCRICKET TETTIGONIA-VIRIDISSIMA
TONOTOPIC ORGANIZATION OF THE AUDITORY NEUROPIL IN THE BUSHCRICKET TETTIGONIA-VIRIDISSIMA
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DOI：
10.1038/306060a0
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发表时间：
1983-01-01
期刊：
影响因子：
64.8
通讯作者：
ROMER, H
中科院分区：
文献类型：
--
作者：
ROMER, H
无脊椎动物的中枢神经结构，特别是感觉或运动神经桩，被证明是相当难处理的传统生理学分析，因为它们被认为具有弥漫或无序的结构。直翅目昆虫腹侧神经索中的听神经丛也是如此，那里的感受器纤维与神经元间突触。在野蟋蟀(Tettigania Viridissima)中，这种神经束构成了大约40个感受器纤维的终末，这些感受器纤维来自前腿胫骨的节律感受器细胞。Zhantiev1和Rheinlaender2已经证明，每个感受器细胞都被调到一个“最佳频率”。Oldfield3进一步表明，感受器在器官内以强直的方式组织，近端和远端的感受器分别调谐到低频和高频。除了发现听觉感受器轴突在前胸神经节4，5的两侧形成一个弥漫性神经丛外，还没有关于单个感受器纤维在神经丛内投射的数据。本文的结果表明，听神经丛经常出现。病毒是一种强直性组织，在中枢神经系统内延伸到周围感觉器官的强直性组织。
Invertebrate central neural structures, especially sensory or motor neuropiles, have proved rather intractable to conventional physiological analysis as they are considered to have a diffuse or unordered structure. This is also true for the auditory neuropiles in the ventral nerve cord of orthopterans, where receptor fibres synapse to interneurones. In the bushcricket,Tettigonia viridissima, this neuropile constitutes the terminations of about 40 receptor fibres, which derive from chordotonal receptor cells in the tibia of the foreleg. Zhantiev1and Rheinlaender2have shown that each receptor cell is tuned to a ‘best frequency’. Oldfield3has further shown that the sensilla are organized tonotopically within the organ, the proximal and distal receptors being tuned to low and high frequencies respectively. Besides the finding that auditory receptor axons form a diffuse neuropile on each side of the prothoracic ganglion4,5, there are no data on the projection of single receptor fibres within the neuropile. The results presented here show that the auditory neuropile ofT. viridissimais tonotopically organized, extending to within the central nervous system the tonotopic organization of the peripheral sense organ.