title: Cardiac deceleration and reaction time: an evaluation of two hypotheses.
mesh_terms: D001285:Atropine / Q000494:pharmacology; D004576:Electromyography; D005133:Eye Movements; D005246:Feedback; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D011930:Reaction Time; D012119:Respiration
chemical_list: D001285:Atropine