Bland B H, Derie-Gillespie D, Mestek P, Jackson J, Crooks R, Cormican A
Department of Psychology, Behavioral Neuroscience Research Group, The University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
Behav Brain Res. 2007 May 16;179(2):299-304. doi: 10.1016/j.bbr.2007.02.002. Epub 2007 Feb 6.
Rats in a runway avoidance task responded to a test shock probe with a period of immobility lasting from 2 to 6s. The shock avoidance-trained group displayed hippocampal theta during the immobility response. The inescapable shock group, in contrast, displayed large amplitude irregular activity (LIA). Following reversal training to escapable shock, all shock avoidance-trained rats responded with LIA and inescapable shock trained rats, reversed to shock avoidance, displayed theta.