Letter: Environmental noise.
D000161:Acoustic Stimulation; D000222:Adaptation, Physiological; D000818:Animals; D001143:Arousal; D002415:Cats; D004781:Environmental Exposure; D004782:Environmental Health; D006168:Guinea Pigs; D006801:Humans; D007858:Learning; D051379:Mice; D009622:Noise; D010913:Pituitary-Adrenal System; D011817:Rabbits; D051381:Rats; D012106:Research; D012640:Seizures / Q000209:etiology; D012892:Sleep Deprivation; D013045:Species Specificity; D013312:Stress, Physiological / Q000209:etiology; D013315:Stress, Psychological