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Revista da Sociedade Brasileira de Fonoaudiologia

On-line version ISSN 1982-0232

Abstract

MATAS, Carla Gentile; HATAIAMA, Natália Moribe  and  GONCALVES, Isabela Crivellaro. Stability of auditory evoked potentials in adults with normal hearing. Rev. soc. bras. fonoaudiol. [online]. 2011, vol.16, n.1, pp.37-41. ISSN 1982-0232.  http://dx.doi.org/10.1590/S1516-80342011000100008.

PURPOSE: To evaluate the stability of parameters of auditory evoked potentials in normal adults. METHODS: Forty-nine normal subjects with ages from 18 to 40 years (25 females and 24 males) were submitted to audiological and electrophysiological hearing evaluation (auditory brainstem response - ABR, middle latency response - MLR, and cognitive potential - P300). Subjects were reassessed three months after the initial evaluation. RESULTS: Significant differences were observed between genders regarding the wave latencies III and V and the interpeaks I-III and I-IV of ABR, and the amplitude N2-P3 of the P300. No differences were found between the results of initial and final assessments for the parameters of the ABR, MLR (Na, Pa latencies and Na-Pa amplitude) and P300 (P300 latency). CONCLUSION: Except for the N2-P3 amplitude, it was observed stability of the parameters of ABR, MLR and P300 in normal adults after a period of three months.

Keywords : Hearing tests; Hearing; Evoked potentials, auditory; Event-related potentials, P300; Adult.

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