NEUROPHYSIOLOGICAL STUDIES ON THE DETECTION OF MECHANICAL STIMULI BY OPHIURA-OPHIURA (L)
NEUROPHYSIOLOGICAL STUDIES ON THE DETECTION OF MECHANICAL STIMULI BY OPHIURA-OPHIURA (L)
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DOI：
10.1016/0022-0981(86)90100-0
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发表时间：
1986-12-31
影响因子：
2
通讯作者：
COBB, JLS
中科院分区：
文献类型：
--
作者：
MOORE, A;COBB, JLS
胞外电极连接到Ophiura ogura(L.)对一系列机械刺激作出反应的记录的单位电位。机械模式内的检测从振动源的近场区域，通过远场传播的压力波，扩展到水介质作为一个整体以水流的形式运动。描述了蛇毒对相同机械刺激反应的行为的实验。还记录了从桡神经索到单个侧臂脊椎运动的单一电位。臂棘上皮和角质层结构的移除以及随后对脊椎运动所记录的反应的减弱，暗示着臂棘内存在一种内感受器。有观点认为，机械刺激的检测是由内感受器检测到的臂棘运动引起的。文中还讨论了臂的棘突在本体感觉和定位中起作用的可能性。
Extracellular electrodes attached to the radial nerve cord of the ophiuroid Ophiura ophiura (L.) recorded unitary potentials in response to a range of mechanical stimuli. Detection within the mechanical mode extended from the near field region of a vibrating source, through the far field propagated pressure wave, to the movement of the aquatic medium as a whole in the form of water flow. Experiments on the behaviour of the ophiuroid in response to the same mechanical stimuli are described. Unitary potentials were also recorded from the radial nerve cord to movement of individual lateral arm spines. The removal of the epithelium and cuticular structures from the arm spines and the subsequent inability to diminish the recorded responses to spine movement, implied the presence of an interoreceptor within the arm spine. It is proposed that movements of the arm spines which are detected by the interoreceptors are responsible for the detection of mechanical stimuli. The possibility that the arm spines in this ophiuroid function in proprioception and orientation is also discussed.