Modification of the rat's startle reaction by an antecedent change in the acoustic environment.
D000161:Acoustic Stimulation; D000818:Animals; D001307:Auditory Perception; D003214:Conditioning, Classical; D007266:Inhibition, Psychological; D008297:Male; D008959:Models, Neurological; D009622:Noise; D009949:Orientation; D051381:Rats; D011930:Reaction Time; D013216:Reflex, Startle; D012107:Research Design; D013997:Time Factors