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To move or not: previous experience in a runway avoidance task determines the appearance of hippocampal Type 2
B H Bland1, D Derie-Gillespie, P Mestek
1Department of Psychology, Behavioral Neuroscience Research Group, The University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada. bhbland@ucalgary.ca
Abstract:
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.

