title: Arousal, temporal and spatial uncertainty and drug effects.
abstract: 1. Due to the multiplicity of a drugs pharmacological action a precise prediction of its behavioural effects is not possible. 2. A heuristic classification of drug effects on man should emphasize similarities and differences between different pharmacological classes. 3. A comparison of several drugs acting on the catecholamine system suggests they influence stimulus selection by affecting the organism's preparation. 4. Sedative - hypnotics, including alcohol, appear to act on different mechanisms, slowing responding. 5. The action of these classes of drugs on memory also appeared to be dissimilar.
mesh_terms: D000328:Adult; D000428:Alcohol Drinking; D000661:Amphetamine / Q000494:pharmacology; D014150:Antipsychotic Agents / Q000494:pharmacology; D001143:Arousal / Q000187:drug effects*; D001288:Attention / Q000187:drug effects; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy; D002648:Child; D002746:Chlorpromazine / Q000494:pharmacology; D004193:Discrimination Learning / Q000187:drug effects; D006801:Humans; D011939:Mental Recall / Q000187:drug effects; D008774:Methylphenidate / Q000494:pharmacology; D009043:Motor Activity / Q000187:drug effects; D009949:Orientation / Q000187:drug effects*; D011619:Psychotropic Drugs / Q000494:pharmacology*; D011930:Reaction Time / Q000187:drug effects; D013028:Space Perception / Q000187:drug effects*
chemical_list: D014150:Antipsychotic Agents; D011619:Psychotropic Drugs; D008774:Methylphenidate; D000661:Amphetamine; D002746:Chlorpromazine