Tone-pip auditory brainstem response and auditory steady-state response of infants with normal hearing / 中华耳鼻咽喉头颈外科杂志
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
;
(12): 888-892, 2009.
Artículo
en Chino
| WPRIM
| ID: wpr-317264
ABSTRACT
<p><b>OBJECTIVE</b>To estimate tone-pip auditory brainstem response (tone-pip ABR) and auditory steady-state response (ASSR) thresholds to follow the development of hearing in four groups of normal babies through the first 6 month of life and to make a comparison between the tone-pip ABR and ASSR for 0.25 - 8 kHz frequency range at different groups.</p><p><b>METHODS</b>The tone-pip ABR and ASSR were recorded in four groups of normal hearing infants (160 ears) at the age of 2 - 4 day, 6 weeks, 3-month and 6-month. Tone-pip ABR and ASSR thresholds were established in 0.25, 0.5, 1, 2, 4 and 8 kHz stimuli.</p><p><b>RESULTS</b>For click ABR, the wave latency of I, III, V and inter-wave latency of I-III, III-V and I-V decreased as the age increase. The developmental changes were obvious in wave I and III before 6 weeks and 3 months respectively. Tone-pip ABR had the similar waveform as the click ABR. With the frequency increasing, their waveforms and wave latencies of I, III and V were getting better and shorter respectively. There was significant difference between the thresholds of tone-pip ABR and ASSR (all P < 0.05). The tone-pip ABR thresholds were significantly lower than those of ASSR from 0.5 to 8 kHz. Both ASSR and tone-pip ABR had similar audiograms for different age of infants with normal hearing.</p><p><b>CONCLUSIONS</b>The longitudinal findings presented in this study suggest that with the maturational development, the wave latency of I, III, V and inter-wave latency of I-III, III-V and I-V of tone-pip ABR decrease as the age increase, while the hearing sensitivity have no changes. Both tone-pip ABR and ASSR have stable frequency specificity. Compared to the ASSR, tone-pip ABR have lower response threshold and maybe nearer to the hearing level of the infant.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Umbral Auditivo
/
Potenciales Evocados Auditivos del Tronco Encefálico
/
Sensibilidad y Especificidad
/
Audición
/
Pruebas Auditivas
Tipo de estudio:
Estudio diagnóstico
Límite:
Humanos
/
Lactante
Idioma:
Chino
Revista:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Año:
2009
Tipo del documento:
Artículo
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