Responses of guinea pigs to brain stimulation during isolation: Examining the transition from “protest” to depressive-like behavior DI Claflin, PA Schiml, N Kardegar, J Caudill, R Floyd, T Deak, J Panksepp, ... Neurology, Psychiatry and Brain Research 19 (2), 67-75, 2013 | 3 | 2013 |