A Preparation of Aplysia Fasciata for Intrasomatic Recording and Stimulation of Single Neurones During Locomotor Movements

Abstract

Methods are described for suspending and clamping Aplysia fasciata so as to permit intrasomatic recording from neurones of the head ganglia during locomotor and other behavioural activities. Sensory responses of neurones in the pedal ganglion are classified into four main types, all being distinct from those of pleural ganglion cells. The pedal ganglion may well contain ‘motor cells’ for the greater part of the somatic musculature. Preliminary results suggest that the pleural LGC may be involved in promoting a change from swimming to creeping behaviour.