Carbon dioxide-induced amnesia in the cockroach Periplaneta omericana

Abstract

Cockroaches (Periplaneta americana) learned to passively avoid electric shock in a two-compartment box after a single training trial. However, Ss exposed to CO2 gas immediately after the training trial failed to show retention of the previous experience when tested 24 h later. Results obtained are consistent with those observed in studies of retrograde amnesia in vertebrates. © 1968, Psychonomic Journals. All rights reserved.