TY - RPRT TI - Cholinergic changes during conditioned suppression in rats. AU - J N Hingtgen AU - J E Smith AU - P A Shea AU - M H Aprison AU - T M Gaff PY - 1976 DO - 10.1126/science.7016 UR - https://pubmed.ncbi.nlm.nih.gov/7016/ ID - 7016 ER -