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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Rebec, G.V. et al.

Reciprocal changes in the firing rate of neostriatal and dorsal raphe neurons following local infusions or systemic injections of D-amphetamine: evidence for neostriatal heterogeneity.

A local infusion of d-amphetamine (d-AMPH) into the dorsal raphe nucleus (DRN) inhibited neuronal activity in this site and produced a mirror-image excitation in the ventrolateral, but not dorsomedial, neostriatum. This effect, which was mimicked by 5-methoxy-N,N-dimethyltryptamine, a serotonin autoreceptor agonist, was not altered by pretreatment with alpha-methyl-p-tyrosine. Similar regional differences in neostriatal activity were obtained following an electrolytic lesion of the DRN or an intraperitoneal injection of d-AMPH. In fact, whereas 1.0 mg/kg of d-AMPH accelerated ventrolateral activity and inhibited dorsomedial neurons, 7.5 mg/kg produced the opposite effect. At both doses, however, DRN activity was inversely related to firing rate in the ventrolateral, but not dorsomedial, neostriatum. These results indicate that only certain regions of the neostriatum are responsive to changes in DRN activity and that these regions respond differently to systemic injections of d-AMPH than other neostriatal sites.[1]

References

Reciprocal changes in the firing rate of neostriatal and dorsal raphe neurons following local infusions or systemic injections of D-amphetamine: evidence for neostriatal heterogeneity. Rebec, G.V., Curtis, S.D. J. Neurosci. (1983) [Pubmed]

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