Fig. 7. RPeD1 activity in Belly F1 snails following the single 0.5 h training session (A) Representative recordings from RPeD1 in Belly F1 snails starting at top with a naive snail (naive Belly F1), 24 h after the operant conditioning procedure, 72 h after conditioning, 72 h yoked control and 1 week after conditioning. (B) Summary data for mean (+s.e.m.) spiking activity per 600 s. (C) Number of spikes per burst. (D) Burst duration. (E) Number of bursts per 600 s. In all measured characters presented here, the 24 h and 72 h operantly conditioned groups both demonstrated significantly lower activity than the naive state (except burst duration at 72 h) and are significantly lower than the 72 h yoke and 1 week groups. 72 h yoke and 1 week groups are not significantly different from the naive state. All data represent log-transformed values. ^*P<0.05; ^**P<0.001. Naive N=8; 24 h N=7; 72 h N=7; 72 h yoke N=8; and 1 week N=7. No significant differences were detected between treatments in other electrophysiological parameters measured (see Materials and methods).