Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.


Sci. STKE, 6 March 2007
Vol. 2007, Issue 376, p. tw79
[DOI: 10.1126/stke.3762007tw79]


Neuroscience Drugs, Dopamine, and Disposition

Peter Stern

Science, AAAS, Cambridge CB2 1LQ, UK

Individual differences in drug abuse reflect distinct behavioral and physiological traits. Dalley et al. found that, compared with controls, spontaneously impulsive rats had decreased dopamine D2/3 receptors in the nucleus accumbens even before exposure to cocaine. Trait impulsivity in rats was predictive of subsequent high rates of intravenous cocaine self-administration. Impulsivity is thus an important mediator of drug abuse vulnerability and not a consequence of chronic drug exposure.

J. W. Dalley, T. D. Fryer, L. Brichard, E. S. J. Robinson, D. E. H. Theobald, K. Lääne, Y. Peña, E. R. Murphy, Y. Shah, K. Probst, I. Abakumova, F. I. Aigbirhio, H. K. Richards, Y. Hong, J.-C. Baron, B. J. Everitt, T. W. Robbins, Nucleus accumbens D2/3 receptors predict trait impulsivity and cocaine reinforcement. Science 315, 1267-1270 (2007). [Abstract] [Full Text]

Citation: P. Stern, Drugs, Dopamine, and Disposition. Sci. STKE 2007, tw79 (2007).

To Advertise     Find Products

Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882