von der Porten K, Redmann G, Rothman B, Pinsker H
J Exp Biol. 1980 Feb;84:245-57. doi: 10.1242/jeb.84.1.245.
Recently developed neurophysiological and behavioural techniques were used to study swimming in the marine gastropod Aplysia brasiliana. Aplysia swim by bilateral parapodial flapping with an anterior to posterior metachronal wave. Parapodial oscillations are measured from video records. Population recordings from nerves innervating the parapodia during normal swimming in intact Aplysia reveal synchronous phasic activity in large efferent units associated with parapodial opening. Isolated brain studies and stimulation of central pathways in intact animals suggest a central pattern generator. We conclude that the output of the neuronal oscillator that controls parapodial flapping radiates synchronously from each pedal ganglion. The putative command to swim originates within the cerebral ganglia.
最近开发的神经生理学和行为学技术被用于研究海洋腹足纲动物巴西裸鳃亚目的游泳行为。巴西裸鳃亚目通过双侧的鳃足扑动并从前向后产生依次动作波来游泳。鳃足的摆动通过视频记录进行测量。在完整的巴西裸鳃亚目正常游泳过程中，对支配鳃足的神经进行群体记录，结果显示与鳃足张开相关的大型传出单元中存在同步的相位活动。对分离大脑的研究以及对完整动物中枢通路的刺激表明存在一个中枢模式发生器。我们得出结论，控制鳃足扑动的神经元振荡器的输出从每个足神经节同步发出。假定的游泳指令起源于脑神经节。
