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Neuropsychopharmacology. 1995 Aug;13(1):21-31.

Cerebral glucose utilization in polysubstance abuse.

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Division of Intramural Research, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA.


Regional cerebral glucose metabolism in subjects with histories of polysubstance abuse was compared to that in control subjects who were drawn from the same community. The substance abuse group showed lower absolute metabolic rates for glucose in lateral occipital gyrus and higher normalized metabolic rates in temporal and frontal areas, including orbitofrontal cortex. It is suggested that some patterns of brain function associated with polysubstance abuse may represent consequences of drug exposure, or they could reflect pre-existing differences that may be relevant to the etiology and maintenance of polysubstance abuse.

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