A FORTY-THREE DAY AVOIDANCE SESSION.
A single Sprague-Dawley rat was subjected to an extended discriminated avoidance session in effect continuously for over 1000 hr (43 days). The longest possible shock-free interval that the subject could obtain without responding was 5 min. Since the subject did not sleep through shock, all resting or sleeping was interrupted at least once every 5 min by either a response or a shock. Neither the experimental (avoidance) animal nor a second animal which received all shocks not avoided by the first, gave any appearance of ill effects from the protracted session.
D000818:Animals; D001362:Avoidance Learning; D004597:Electroshock; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012106:Research; D013312:Stress, Physiological
AVOIDANCE LEARNING; ELECTROSHOCK; EXPERIMENTAL LAB STUDY; RATS; STRESS