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Facilitation of brain stimulation reward byΔ 9-tetrahydrocannabinol

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Abstract

The present experiment explored whetherΔ 9-tetrahydrocannabinol (Δ 9-THC), the psychoactive ingredient in marijuana, shares with other drugs of abuse the ability to facilitate brain stimulation reward acutely, as measured by clectrical intracranial self-stimulation (ICSS). Laboratory rats were implanted with stimulation electrodes in the medial forebrain bundle, and trained to stable performance on a self-titrating threshold ICSS paradigm.Δ 9-THC, at a dose believed pharmacologically relevant to moderate human use of marijuana, acutely lowered ICSS thresholds, suggesting that marijuana acts on similar CNS hedonic systems to most other drugs of abuse.

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Gardner, E.L., Paredes, W., Smith, D. et al. Facilitation of brain stimulation reward byΔ 9-tetrahydrocannabinol. Psychopharmacology 96, 142–144 (1988). https://doi.org/10.1007/BF02431546

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  • DOI: https://doi.org/10.1007/BF02431546

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