Effects of thermal history on long term neuromuscular facilitation in intact crayfish and isolated claw preparations

The generation of long term facilitation (LTF), a form of synaptic facilitation in Crustacea that results from maintained synaptic activity, is established for the first time in an intact animal. Facilitation of stretcher muscle myogram amplitude could be monitored in crayfish (Procambarus clarkii) while stimulating the excitor motoneuron in both intact animals and isolated preparations (Figs. 2, 3).At an average stimulation frequency of 8 Hz, …