PMID- 7667344 OWN - NLM STAT- MEDLINE DCOM- 19951011 LR - 20191210 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 51 IP - 2-3 DP - 1995 Jun-Jul TI - Acute effects of methylenedioxymethamphetamine (MDMA) on several complex brain functions in monkeys. PG - 301-7 AB - The effects of MDMA were assessed in rhesus macaques using behavior in an operant test battery (OTB) consisting of five food-reinforced tasks designed to model aspects of time estimation, short-term memory, and attention, motivation, learning, and color and position discrimination. Testing occurred 30 min after intramuscular, injections of MDMA (0.0, 0.1, 0.3, and 1.0 mg/kg). The behavioral endpoints monitored included percent task completed, response rate or latency, and response accuracy. Percent task completed was significantly decreased in the time estimation, learning, and motivation tasks at 1.0 mg/kg as compared to saline controls. Response accuracies in the time estimation and learning tasks were also decreased at 1.0 mg/kg. Response rate was decreased at 1.0 mg/kg in the motivation task but was not significantly affected in any other tasks. No behavioral endpoints were significantly affected in the short-term memory and attention and color and position discrimination tasks at any dose tested. Results indicate that time estimation, motivation, and learning are more sensitive to the acute effects of MDMA than are short-term memory and attention and color and position discrimination. FAU - Frederick, D L AU - Frederick DL AD - Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079-9502, USA. FAU - Gillam, M P AU - Gillam MP FAU - Allen, R R AU - Allen RR FAU - Paule, M G AU - Paule MG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Attention/drug effects MH - Color Perception/drug effects MH - Conditioning, Operant/drug effects MH - Discrimination, Psychological/drug effects MH - Dose-Response Relationship, Drug MH - Macaca mulatta MH - Male MH - Memory, Short-Term/drug effects MH - Mental Processes/*drug effects MH - Motivation MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Time Perception/drug effects EDAT- 1995/06/01 00:00 MHDA- 1995/06/01 00:01 CRDT- 1995/06/01 00:00 PHST- 1995/06/01 00:00 [pubmed] PHST- 1995/06/01 00:01 [medline] PHST- 1995/06/01 00:00 [entrez] AID - 0091-3057(94)00383-T [pii] AID - 10.1016/0091-3057(94)00383-t [doi] PST - ppublish SO - Pharmacol Biochem Behav. 1995 Jun-Jul;51(2-3):301-7. doi: 10.1016/0091-3057(94)00383-t.