STARTLE RESPONSE: HABITUATION OVER TRIALS AND DAYS, AND SEX AND STRAIN  DIFFERENCES.
D000818:Animals; D001522:Behavior, Animal; D005239:Fear; D051381:Rats; D013216:Reflex, Startle; D012106:Research; D012723:Sex; D013016:Sound
BEHAVIOR, ANIMAL; EXPERIMENTAL LAB STUDY; FEAR; RATS; SEX; SOUND