VISUAL, AUDITORY AND SOMATOSENSORY CONVERGENCE IN OUTPUT NEURONS OF THE CAT SUPERIOR COLLICULUS - MULTISENSORY PROPERTIES OF THE TECTORETICULOSPINAL PROJECTION
VISUAL, AUDITORY AND SOMATOSENSORY CONVERGENCE IN OUTPUT NEURONS OF THE CAT SUPERIOR COLLICULUS - MULTISENSORY PROPERTIES OF THE TECTORETICULOSPINAL PROJECTION
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DOI：
10.1007/bf02259139
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发表时间：
1992-01-01
影响因子：
2
通讯作者：
STEIN, BE
中科院分区：
文献类型：
--
作者：
MEREDITH, MA;WALLACE, MT;STEIN, BE
精选的上丘（SC）神经元接收并整合来自视觉、听觉和体感系统的信息。确定哪些SC神经元组成了这个群体，以及它们在哪里发送多感觉信息，对于理解SC对注意和定向行为的功能影响非常重要。SC影响这些行为的主要途径之一是织网脊髓束，这是一条下行通路，在眼睛、耳朵和头部的定向中起着不可或缺的作用。在本研究中发现的182个织网脊髓神经元（TRSNs）中，几乎所有（94%）对感觉刺激有反应，绝大多数（84%）是多感觉的。目前的结果表明，TRSN是不同感觉系统之间的重要联系，并提供了一个基底，通过这个基底，它们可以进入介导定向行为的电路。
A select population of superior colliculus (SC) neurons receives and integrates information from the visual, auditory and somatosensory systems. Determining which SC neurons comprise this population and where they send their multisensory messages is important in understanding the functional impact of the SC on attentive and orientation behavior. One of the major routes by which the SC influences these behaviors is the tecto-reticulo-spinal tract, a descending pathway that plays an integral role in the orientation of the eyes, ears and head. Of the 182 tecto-reticulo-spinal neurons (TRSNs) encountered in the present study, almost all (94%) responded to sensory stimuli and the overwhelming majority (84%) were multisensory. The present results demonstrate that the TRSN serves as an important link among the different sensory systems and provides a substrate through which they may gain access to the circuitry mediating orientation behavior.