Blog Archives

Brainstem auditory evoked potential with speech stimulus

CONCLUSION: based on the gathered data it can be observed that this potential works as a new tool for understanding the encoding of sound at the brainstem level.

from Pró-Fono Revista de Atualização Científica

Study of suppression effect in the brainstem auditory evoked potential*

the present study indicated increased latencies and reduced amplitudes of waves I, III and V with contralateral noise, when comparing the situations with and without noise. These results suggest a possible influence of the efferent auditory system on the response modulation of Brainstem auditory evoked potential when contralateral white noise is used.

from Pró-Fono

Frequency-specific and steady-state evoked auditory brainstem responses in pediatric audiology: case study

It is recommended that congenital hearing loss is identified as early as three months old. After the initial step of confirming the diagnosis, it is necessary to obtain accurate hearing thresholds, allowing an adequate selection, indication and regulation of hearing aids for these children. It is inserted, in this context, the Frequency-Specific Auditory Brainstem Responses (FSABR) and, more recently, the Auditory Steady-State Responses (ASSR). The aim of the present study was to describe the findings of the use of both techniques to estimate the auditory thresholds of a three-month-old infant with bilateral sensorineural hearing loss diagnosed using, as primary evaluation method, the click-evoked Auditory Brainstem Responses, with both air and bone stimuli conduction. Both techniques provided reliable findings for estimating auditory thresholds. The ASSR had an advantage regarding the duration of the evaluation.

from Revista de Sociedade Brasileira de Fonoaudiologia