Attenuation of the disruptive effects of (+/-)3,4-methylene dioxymethamphetamine (MDMA) on delayed matching-to-sample performance in the rat.
Behavioral Neuroscience – January 01, 2006
Source: OpenAlex
Summary
Acute exposure to MDMA significantly disrupts memory performance, particularly by increasing confusion between past and present events. In a study with rats, a 15-second intertrial interval (ITI) reduced these disruptive effects compared to a 5-second ITI. Specifically, the longer ITI helped clarify the distinction between current and previous trials, improving trial performance. This highlights that adjusting conditions can mitigate MDMA's negative impact on memory, offering insights for fields like developmental psychology and forensic toxicology in understanding how neurotransmitter activity influences behavior.
Abstract
Recent evidence suggests that the disruptive effects of acute exposure to (+/-)3,4-methylene dioxymethamphetamine (MDMA) on memory performance may be the result of increased confusion between previous-trial and current-trial events. The current study tested this hypothesis by examining the effects of MDMA on performance of rats in a delayed matching-to-sample procedure when the length of the intertrial interval (ITI) was altered. Consistent with the possibility that limiting the conditions under which responses made on a previous trial would interfere with current-trial choice, a 15-s ITI ameliorated the disruptive effects caused by MDMA on trial performance when the ITI was 5 s. Therefore, the disruptive effects of MDMA on memory can be attenuated by methods that separate current-trial "to-be-remembered" events from previous-trial events.