Figure 2
From: Effects of local anesthesia of the cerebellum on classical fear conditioning in goldfish
Effects of lidocaine injection on base heart rate during habituation and acquisition sessions. During the acquisition session, base heart rates in the fifth trial (just after completion of the injection) and twentieth trial (about 15 min after the injection) are shown. There were no significant differences in base heart rates between these trials in each group. Base heart rates in the vehicle and lidocaine-injected groups were not significantly different from those in the control group in each trial.