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March 1977

Frequency Effects of Temporary N1 Depression Following Acoustic Overload

Author Affiliations

From the Kresge Hearing Research Laboratory, Department of Otolaryngology, University of Oregon Health Sciences Center, Portland. Dr Mitchell is now with Northwestern University, Evanston, Ill.

Arch Otolaryngol. 1977;103(3):117-123. doi:10.1001/archotol.1977.00780200043001

• The effect of acoustic overload on the N1 potential at different frequencies was determined. The conditions of overstimulation were such as to produce temporary effects. The results of the study were: (1) the N1 potential was substantially depressed by acoustic overloads that did not alter the alternating current (AC) cochlear potential; (2) the maximum N, depression was at one-half octave above the overstimulation frequency; (3) there was no N1 depression at frequencies below the frequency of overstimulation; and (4) the N1 depression recovered within 24 hours.

(Arch Otolaryngol 103:117-123, 1977)

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