A series of N-[(dialkylamino) alkyl]-2-oxo-l-pyrrolidineacetamides was synthesized. The title compounds reversed electroconvulsive shock (ECS) induced amnesia in mice when administered subsequent to the ECS treatment and were inactive in a general observational test for central nervous system (CNS) activity. Active compounds exhibited an inverted U- shaped dose-response curve. Among the compounds with the broadest dose-response ...