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Published on: May 3, 2012
Electrocortical effects of MDMA are potentiated by acoustic stimulation in rats
Michelangelo Iannone1, Stefania Bulotta, Donatella Paolino
1Section of Pharmacology, CNR-Institute of Neurological Science, Roccelletta di Borgia, Catanzaro, Italy. m.iannone@isn.cnr.it
Background:
3,4-Methylenedioxymethamphetamine (MDMA; ecstasy) is known for its toxicological, psychopathological and abuse potential. Some environmental conditions, e.g. acoustic stimulation typical of the "rave scene" can influence the toxicity of this drug.
Results:
We investigated the effects of low doses of MDMA in vivo using Wistar rats in the absence of acoustic stimulation (white noise; 95 Db) demonstrating that ecstasy is able to induce a significant activation (reduction of Electrocortical total power) of the telencephalic cortex that spontaneously reverts in the absence of sensorial stimuli, whereas it persists for several days if, in addition to MDMA, the animals are exposed to acoustic stimulation.
Conclusion:
Our data demonstrate that low doses of MDMA are able to reduce electrocortical total power, and that this effect is potentiated by sensorial stimuli commonly present in certain environments, such as rave parties.
Insights
Low doses of 3,4-Methylenedioxymethamphetamine (MDMA) reduce brain activity, an effect amplified by environmental stimuli like loud music found at rave parties.
Area of Science:
- Neuroscience
- Pharmacology
- Toxicology
Background:
- 3,4-Methylenedioxymethamphetamine (MDMA), commonly known as ecstasy, possesses significant toxicological, psychopathological, and abuse potential.
- Environmental factors, such as acoustic stimulation prevalent in rave scenes, can modulate MDMA's toxicity.
Purpose of the Study:
- To investigate the effects of low-dose MDMA on electrocortical activity in Wistar rats.
- To determine the influence of acoustic stimulation on MDMA-induced neurophysiological changes.
Main Methods:
- In vivo administration of low-dose MDMA to Wistar rats.
- Electrocortical activity monitoring in the telencephalic cortex.
- Exposure to acoustic stimulation (white noise; 95 Db) and its absence.
Main Results:
- MDMA induced a significant reduction in electrocortical total power, indicating telencephalic cortex activation.
- This effect spontaneously reverted in the absence of sensory stimuli.
- The reduction in electrocortical power persisted for several days when MDMA administration was combined with acoustic stimulation.
Conclusions:
- Low doses of MDMA reduce electrocortical total power.
- Sensory stimuli, such as those found in rave environments, potentiate the electrocortical effects of MDMA.
