The Role of the Nucleus Accumbens in Instrumental Conditioning: Evidence of a Functional Dissociation between Accumbens Core and Shell

This research was supported by the National Institute of Mental Health Grant 56446 to B.W.B. We thank Sandra Cetl for her assistance with data collection.

Correspondence should be addressed to Laura Corbit, University of California Los Angeles, Department of Psychology, Box 951563, Los Angeles, CA 90095. E-mail: corbit{at}ucla.edu.