Abstract
The conclusion that memory consolidation may continue following a single electroconvulsive shock was examined with a one-trial passive avoidance task. Rats given one electroconvulsive shock 5 min after the passive avoidance training suffered only a slight loss of retention. However, when a second electroconvulsive shock was given at 1 hr after training, there was a significantly greater retention loss than that following one electroconvulsive shock at 5 min or at 1 hr. Additional results indicate that the disruptiveness of the second electroconvulsive shock is time-dependent and that the retention deficit does not appear to be due to punishing or dis-inhibitory effects of the electroconvulsive shocks. These findings are interpreted as indicating that memory consolidation can continue after electroconvulsive shock.
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