Central Generation of Bursting in the Feeding System of the Snail, Lymnaea Stagnalis

Abstract

The central generation of burst activity was investigated in the buccal ganglia of Lymnaea. Eight different patterns of burst activity were generated by one or two consecutive phases of compound synaptic potentials resulting from activity of neurones outside the population of recorded neurones. These inputs acted upon the different endogenous properties of buccal neurones such as post-inhibitory rebound and spike adaptation. Effects of synaptic inputs were reinforced by electrotonic coupling of some buccal neurones of the same type.