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Original

Influence of Age and Hearing Loss on the Latency Shifts of the Auditory Brainstem Response as a Result of Increased Stimulus Rate

Pages 101-106 | Received 30 Sep 1985, Accepted 18 Dec 1985, Published online: 31 Jan 2011
 

Abstract

Latency shifts of auditory brainstem response waves, I, III and V were studied as a function of increasing the stimulus repetition rate from 9 to 21, 42 and 63/s. There appears to be an accumulative retardation of the successive waves when faster click rates are administered that yield a prolongation of the interpeak intervals I–-III and III-V. The effect on wave V and on the interpeak interval III-V seems to intensify with age (especially over 55 years). In ears with a flat sensorineural hearing loss, the adaptation of waves III and V is found to be somewhat smaller than in normal ears at the same intensity in dB SPL.

Les modifications des latences des ondes I, III et V des réponses évoquées du tronc cérébral ont été étudiées en fonction de l'augmentation du rhythme de répétition des stimulations de 9 à 21, 42 et 63/s. II semble y avoir une accumulation du retard des ondes successives quand le rythme des clics est accéléré, qui produit une augmentation des intervalles entre pics I–-III et III–-V. L'effet sur l'onde V et sur l'intervalle III–-V semble augmenter avec l'aˇge (particulièrement au-dessus de 55 ans). Dans les oreilles présentant une surdité neurosensorielle avec un audiogramme plat, l'adaptation des ondes III et V semble moins marquée que dans les oreilles normales à la měme intensité en dB SPL.

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