Animals 2 Avoidance Learning 2 Choline 2 Cholinergic system 2 Hippocampus 2 Male 2 Memory 2 Memory Disorders Memory expression 2 Memory reconsolidation 2 Memory retrieval 2 Mice 2 Muscarinic Antagonists 2 Nicotinic Agonists 2 Nootropic Agents 2 Retention (Psychology) 2 Scopolamine Hydrobromide 2 Scopolamine-induced amnesia 2 Time Factors 2 animal experiment 2 animal model 2 article 2 behavior 2 brain function 2 choline bitartrate 2 controlled study 2 drug effect 2 male 2 memory consolidation 2 memory disorder 2