title: A double-blind study on the effects of piracetam upon perceptual and psychomotor performance at varied heart rates in patients treated with artificial pacemakers.
mesh_terms: D000081:Acetamides / Q000494:pharmacology; D000368:Aged; D001921:Brain / Q000378:metabolism; D000697:Central Nervous System Stimulants / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D005260:Female; D005425:Flicker Fusion; D006339:Heart Rate; D006801:Humans; D000860:Hypoxia / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000187:drug effects; D010138:Pacemaker, Artificial; D010919:Placebos; D011760:Pyrrolidinones / Q000494:pharmacology*; D011930:Reaction Time; D014792:Visual Acuity / Q000187:drug effects*
chemical_list: D000081:Acetamides; D000697:Central Nervous System Stimulants; D010919:Placebos; D011760:Pyrrolidinones