Figure 10.

Sensory activation of CC9/10 in semi-intact preparations. A, Activity during feeding. CC9/10 was activated when feeding was elicited by food (seaweed) and CC9/10 was quiescent at rest (A1). However, when CC9/10 was spontaneously active and firing at low rates, feeding elicited by seaweed was not accompanied by a further increase in CC9/10 activity (A2). Pressure: buccal mass pressure that changes as a result of feeding movements. B, CC9/10 was activated by a pinch of the tentacles (B1) or tail (B2). In B2, activation of CC9/10 was associated with an increase in MCC excitability, as measured with 3 s current pulses (bars). The isolated tail was attached to the pedal ganglion through P9.