To the question of two activating mechanisms: cortical EEG desynchronization and hippocampal "theta" rhythm.
D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002540:Cerebral Cortex / Q000187:drug effects / Q000502:physiology; D003344:Cortical Synchronization; D004569:Electroencephalography; D005071:Evoked Potentials / Q000187:drug effects; D006624:Hippocampus / Q000187:drug effects / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology; D010276:Parasympatholytics / Q000494:pharmacology; D010830:Physostigmine / Q000494:pharmacology; D011817:Rabbits; D051381:Rats; D011950:Receptors, Cholinergic / Q000187:drug effects; D013826:Theta Rhythm
D010276:Parasympatholytics; D011950:Receptors, Cholinergic; D010830:Physostigmine