Science. 1980 Apr 4;208(4439):76-9. doi: 10.1126/science.208.4439.76.
Serotonin and octopamine, injected into the circulation of freely moving lobsters and crayfish, produce opposite behavioral effects. Octopamine injection produces sustained extension of the limbs and abdomen; serotonin injection produces sustained flexion. Neurophysiological analyses show that these postures can be accounted for by opposing, coordinated effects of these amines on patterns of motoneuron activity recorded from the ventral nerve cord.
血清素和章鱼胺被注射到自由游动的龙虾和小龙虾的循环系统中，会产生相反的行为效应。章鱼胺的注射会导致肢体和腹部持续伸展；而血清素的注射则会导致持续弯曲。神经生理学分析表明，这些姿势可以通过这些胺类物质对从腹神经索记录的运动神经元活动模式的相反协调作用来解释。
