AUDITORY BRAINSTEM RESPONSES: STIMULUS VARIATIONS
DOI:
https://doi.org/10.7322/jhgd.106001Palavras-chave:
Auditory evoked potentials, hearing, normal values, brain stem.Resumo
Introduction: Auditory brainstem response is a response to external stimulation that represents the neural electrophysiological activity of the auditory system at the brainstem level. Variations due to the change in the presentation of stimuli help in the diagnosis of clinical conditions that affect the auditory nervous system. Objective: To characterize and compare the different polarity variations stimuli and presentation rates in adults with normal hearing. Methods: We investigated 20 students from a Center for Diagnosis and Rehabilitation, with no hearing impairment, all female aged 15-30 years old, who were screened for brainstem auditory evoked potential, which presented stimuli in different polarities ranges, including condensation and rarefaction in different presentation rates of 21.7, 27.7 and 47.7 stimuli per second. Results: We observed lower values of latencies of wave I in the three rates of stimulus presentation and wave V at the rate of 21.7/sec. rarefact when used, and also on the right ear and the same polarity , the gap interpeak I - III also had lower values for rates of introduction, as in the IR range the rate of 21.7/s. In overall comparison of groups in different polarities of stimulation, there was a significant difference only in rarefact. Conclusion: The understanding of the behavior of the electrophysiological response to variations of the stimulus is important and may serve as a reference for normal use of these measures in clinical practice.Downloads
Referências
Sleifer P, Costa SS, Cóser PL, Goldani MZ, Dornelles C, Weiss K. Auditory brainstem response in premature and full-term children. Int J Pediatr Otorhinolaryngol. 2007;71: 1449-56. DOI: http://dx.doi.org/10.1016/j.ijporl.2007.05.029.
Sousa LCA, Piza MRT, Alvarenga KF, Cóser PL. Evoked Auditory Brainstem Response (BAEP). Electrophysiology of Hearing and otoacoustic emissions: principles and clinical applications. São Paulo: Tecmedd; 2008; p. 49-87.
Sousa LCA, LS Rodrigues, Piza MRT, Ferreira DR, Ruiz DB. Occasional finding of neurological research for childhood hearing loss using the ABR. Rev Bras Otorrinolaringol. 2007; 73(3): 424-28. DOI: http://dx.doi.org/10.1590/S0034-72992007000300020.
Pinto FR, Woods CG. Comparison between auditory thresholds and electrophysiological tone bursts. Rev Bras Otorrinolaringol. 2007;73(4):513-22. DOI: http://dx.doi.org/10.1590/S0034-72992007000400010.
Esteves MCBN, Del’Aringa AHB, Arruda GV, Aringa ARD, Nardi JC. Brainstem evoked response audiometry in normal hearing subjects. Braz J Otorhinolaryngol. 2009;75(3):420-5. DOI: http://dx.doi.org/10.1590/S1808-86942009000300018.
Moller A. Neural generators for auditory brainstem evoked Potentials. In: Kard RF, Don M, Eggermont JJ. Auditory Evoked Potentials. Basic principles and clinical application. Baltimore Lippincott Williams & Wilkins; 2007; p.336-354.
Antoneli MZ, Zanchetta S, Zorzetto NL, Ribeiro LA, Richieri-Costa A. Holoprosencephaly: clinical evaluation on audiological and brainstem electrophysiological profiles. Am J Med Genetics. 2006; 140A(19):2142–2145. DOI: http://dx.doi.org/10.1002/ajmg.a
Matas CG, Leite A, Gonçalves IC, IF Neves. Brainstem Evoked Potentials with Conductive and Sensorineural Hearing Loss. Arq Inter Otorrinolaringol. 2005;9(4).
Soares IA, PL Menezes, Carnauba ATL, Pereira LD. Standardization of brainstem auditory evoked potential using a new device. Pro-Fono Rev Atual Cient. 2010; 2(4):421-6. DOI: http://dx.doi.org/10.1590/S0104-56872010000400010.
Fowler CG, Bauch CD, Olsen WO. Diagnostic implications of stimulus polarity effects on the 13(2):72-82.
Lima JP, Alvarenga KF, Foelkel TP, Monteiro CZ, Agostinho RS. Polarity stimulation effects on brainstem auditory evoked potentials. Rev Bras Otorrinolaringol. 2008;74(5):725-730.
Hall JW. New Handbook of Auditory Evoked Responses. Boston: Allyn & Bacon; 2006.
Hood LJ. Clinical applications of the auditory brainstem response. San Diego: Singular Publishing Group;1998; p.12-28.
Burkard RF, Sims D. The Human Auditory Brainstem Response to high click rates: Aging effects. Am J Audiol. 2001;10(2):53-61.
Vieira S. Introdução à bioestatística. Elsevier Brasil; 2011.
Lloyd LL, Kaplan H. Audiometric interpretation: a manual the basic audiometry. Baltimore: University Park Press; 1978; p.16-7.
Jerger J. Clinical experience with impedance audiometry. Arch Otolaryngol. 1970;92 (4):311-24. DOI: http://dx.doi.org/10.1001/archotol.1970.04310040005002
Rawool VW. Effects of click polarity on the auditory brainstem responses of older men. Audiology. 1998;37(2):100-8.
Ferraro JA, Durrant JD. Auditory Evoked Potentials: general vision and principles. In: Katz J. Treaty of Clinical Audiology. 4th. Manole; 1999; p.315-336.
Starr A. The neurology of auditory neuropathy. In: Sininger IA. Starr Auditory neuropathy, a new perspective on hearing disorders. San Diego: Singular Publishing Group; 2001; p.37-49.
Fávero ML, Silva FLC, Tabith Junior A, Nicastro FS, Gudmond MC, Spinelli M. Changes in click characteristics during ABR recording. Rev Bras Otorrinolaringol. 2007;73(1):7-11. DOI: http://dx.doi.org/10.1590/S0034-72992007000100002.
Stürzebecher E, Cebulla M, Neumann K. Click-evoked BAEP at high stimulus repetition rate for neonatal hearing screening. Int J Audiol. 2003;42(2):59-70.
Tanaka H, Komatsuzaki A, Hentona H. Usefulness of auditory brainstem responses at high stimulus rates in the diagnosis of acoustic neuroma. ORL J Otorhinolaryngol Relat Spec. 1996; 58(4): 224-8. DOI: http://dx.doi.org/10.1159/000276841.
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