Sensitivity to Instrumental Contingency Degradation Is Mediated by the Entorhinal Cortex and Its Efferents via the Dorsal Hippocampus

Received June 27; revised Sept. 26; accepted Oct. 1.

This work was supported by National Institute of Mental Health Grant MH 56446 (B.W.B.). We thank Sandra Cetl and Chris Park, who assisted with data collection.

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