title: Intensity-time tradeoff for constant hearing loss with high sound levels.
abstract: The tradeoff relation between exposure intensity and duration for constant hearing loss was investigated in two series of experiments using Mongolian gerbils. The gerbils were exposed to a 1/3 octave band of noise at 2.5 kHz. In the first series animals were exposed to 120 dB SPL for 1 h, to 126 dB SPL for 15 min, and to 126 dB SPL for 3.75 min. In the second series, shorter durations were used: 120 dB SPL for 15 min, 126 dB SPL for 3.75 min, and 126 dB SPL for 56 s. The hearing thresholds were determined behaviorally immediately before exposure and 6 weeks after exposure. The results suggest that the intensity-time tradeoff for the investigated intensity interval is between 1.5 and 3 dB per halving of the duration.
authors.affiliation: ELAB, Trondheim, Norway.
authors.forename: G
authors.initials: G
authors.lastname: Oftedal
authors.forename: M E
authors.initials: ME
authors.lastname: Nivison
authors.forename: Z
authors.initials: Z
authors.lastname: Jinze
mesh_terms: D000818:Animals; D001309:Auditory Threshold; D003051:Cochlea / Q000473:pathology; D005849:Gerbillinae; D006198:Hair Cells, Auditory / Q000473:pathology; D006317:Hearing Loss, Noise-Induced / Q000209:etiology* / Q000473:pathology; D008297:Male; D008954:Models, Biological; D011930:Reaction Time; D013997:Time Factors