Function of identified nerves in orientation to water flow in Tritonia diomedea.
Function of identified nerves in orientation to water flow in Tritonia diomedea.
复制标题
Tritonia diomedea 中已识别神经对水流定向的功能。
DOI：
10.1007/bf00188162
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Willows,AO
中科院分区：
文献类型：
--
作者：
Murray,JA;Willows,AO
我们确定的感觉和运动神经介导的取向，以流动的海洋slugTritonia diomedea，并测试假设，即蛞蝓定向水流通过比较强度的水流刺激其身体的每一侧。损伤实验揭示了哪些神经携带了血流定向所需的信息。脑神经#2的外侧支是血流定向所需的唯一脑神经。切断除2号脑神经外侧支以外的所有脑神经并不能消除血流方向。因此，脑神经#2的侧支对于血流定向是必要的和足够的（在脑神经中）。通过切断一侧脑神经#1 -4对一侧头部进行去神经支配并不能消除正常的血流方向。我们已经修改了我们的模型如何Tritonia diomedeaorients流动，以允许这种单方面的流动方向的决定。单侧切断包含许多足运动轴突的足神经#3，减少了向该侧的转向，但不影响最终的流动方向。检测流动方向的能力不受最初无法转向流动的影响。
We determined which sensory and motor nerves mediate orientation to flow in the marine slugTritonia diomedea, and tested the hypothesis that the slug orients to water flow by comparing the intensities of water flow stimulation on each side of its body. Lesion experiments revealed which nerves carried information necessary for flow orientation. The lateral branches of Cerebral Nerve # 2 were the only cerebral nerves necessary for flow orientation. Cutting all cerebral nerves except the lateral branches of Cerebral Nerve # 2 did not eliminate flow orientation. Thus, the lateral branches of Cerebral Nerve # 2 were both necessary and sufficient (among the cerebral nerves) for flow orientation. Denervation of one side of the head by cutting Cerebral Nerves # 1–4 on one side did not eliminate normal flow orientation. We have revised our model of howTritonia diomedeaorients to flow to allow for this unilateral determination of flow direction. Unilaterally cutting Pedal Nerve # 3, which contains many pedal motor axons, reduced turning toward that side, but did not affect final orientation to flow. The ability to detect flow direction was not compro mised by the inability to initially turn towards flow.