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Neurosci Biobehav Rev. 2004 Jan;27(8):693-701.

LSD, 5-HT (serotonin), and the evolution of a behavioral assay.

Author information

1
Department of Psychology, University of South Carolina, 1512 Pendleton Street, Columbia, SC 29208, USA. [email protected]

Abstract

Research in our laboratory, supported by NIDA and facilitated by Roger Brown, has indicated that serotonergic neuronal systems are involved in the discriminative stimulus effects of LSD. However, the only compounds that fully antagonize the LSD cue act at both serotonin (5-HT) and dopamine (DA) receptors. In addition, substitution for LSD in standard drug vs. no-drug (DND) discriminations does not necessarily predict either similar mechanisms of action or hallucinogenic potency because 'false positives' occur when animals are given drugs such as lisuride (LHM), quipazine, or, possibly, yohimbine. These effects can be greatly reduced by using drug vs. drug (D-D), drug vs. drug vs. no drug (D-ND), or drug vs. ' other' drug (saline, cocaine, pentobarbital) training procedures. Additional studies, in which drugs were administered directly into the cerebral ventricles or specific brain areas, suggest that structures containing terminal fields of serotonergic neurons might be involved in the stimulus effects of LSD.

PMID:
15019419
DOI:
10.1016/j.neubiorev.2003.11.012
[Indexed for MEDLINE]

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