Satterlie R A
Department of Zoology, Arizona State University, Tempe 85287-1501, USA.
J Exp Biol. 1995 Apr;198(Pt 4):905-16. doi: 10.1242/jeb.198.4.905.
A symmetrical cluster of serotonin-immunoreactive neurons in the pedal ganglia of Clione limacina has been described morphologically and physiologically. At least five of the cluster neurons send axons to the ipsilateral wing that branch throughout the entire wing area. Activation of these cells did not produce a motor effect in non-swimming preparations, but did enhance contractility in swimming preparations. Activity in the pedal neurons did not produce detectable central effects as neither swim interneuron nor swim motor neuron activities were altered. Most notable was a lack of a change in swim frequency, a characteristic of swim acceleration. Activity in the pedal neurons did enhance the size of muscle junctional potentials and spike-like responses, but only in slow-twitch muscles. The peripheral modulatory effect was blocked by the serotonin antagonist mianserin.
已从形态学和生理学角度描述了海天使（Clione limacina）足神经节中一组对称的5-羟色胺免疫反应性神经元。该簇中至少有五个神经元向同侧翼发出轴突，这些轴突在整个翼区域分支。在非游泳准备状态下，激活这些细胞不会产生运动效应，但在游泳准备状态下会增强收缩力。足神经元的活动未产生可检测到的中枢效应，因为游泳中间神经元和游泳运动神经元的活动均未改变。最值得注意的是游泳频率没有变化，而游泳频率是游泳加速的一个特征。足神经元的活动确实增强了肌肉连接电位和尖峰样反应的大小，但仅在慢肌中如此。5-羟色胺拮抗剂米安色林可阻断外周调节作用。
