Opiate tolerance by heroin self-administ
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Zheng-Xiong Xi; Gaohong Wu; Elliot A. Stein; Shi-Jiang Li
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Article
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2004
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John Wiley and Sons
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English
โ 455 KB
Functional MRI (fMRI) was employed to determine whether repeated heroin self-administration (SA) produces tolerance or sensitization in the brain of heroin-SA rats. Twelve rats were evenly divided into saline and heroin (0.06 mg/kg, 4 hr/day) SA groups. There was a progressive increase in drug-SA be