fMRI response in the medial prefrontal cortex predicts cocaine but not sucrose self-administration history. - Hanbing Lu; Svetlana I. Chefer; Pradeep K. Kurup; Karine Guillem; D. Bruce Vaupel; Thomas J. Ross; Anna Moore; Yihong Yang; Laura L. Peoples; Elliot A. Stein (NeuroImage, 2012)