Potencial evocado auditivo de estado estável em crianças e adolescentes com perda auditiva neurossensorial de grau severo e profundo e descendente

Abstract

Purpose: To verify the correlation between the electrophysiological thresholds in Auditory Evoked Potential Steady State (ASSR) and behavioral thresholds obtained with pure tone audiometry in children and adolescents with severe to profound sensorineural hearing loss and steeply sloping hearing loss. Methods: Twenty subjects from both gender aged between five and 15 years-old were evaluated and divided into the following groups: 10 subjects with steeply sloping sensorineural hearing loss and 10 subjects with severe to profound sensorineural hearing loss.The subjects underwent pure tone audiometry, speech audiometry (SRT and SDT), acoustic immittance measures and ASSR. Results: In the group with steeply sloping hearing loss, the correlation was 0.68 and 0.94. In the group with severe to profound hearing loss, the correlation was 0.59 to 0.86. Mean differences between ASSR and audiometry threshold were 1.4 and 7.5 dB in the group with steeply sloping hearing loss and -0.40 e-8.5 dB in the group with severe to profound hearing loss. Conclusion: There was a positive correlation between the electrophysiological and behavioral thresholds in children and adolescents with severe to profound hearing loss and steeply sloping hearing loss.

Longitudinal Comparison of Auditory Steady-State Evoked Potentials in Preterm and Term Infants: The Maturation Process

“…This finding corroborates with other research. 6 9 16 21 22 34 This occurs due to the interference of electrophysiological or environmental noise at low frequencies. Moreover, the cochlear tonotopy in which there is a decline for the amplitude due to the dispersion of energy in the cochlear apex may also explain the difference between frequencies.…”

“…Moreover, the cochlear tonotopy in which there is a decline for the amplitude due to the dispersion of energy in the cochlear apex may also explain the difference between frequencies. 6 9 16 21 22 34…”

“…We modulated the stimuli were modulated with amplitudes of 77, 85, 93, and 101 Hz in the left ear, and 79, 87, 95, and 103 Hz in the right ear. 6 13 16 22 30 31…”

“…It is essential for appropriate intervention and child development. 6 15 16 The Auditory Steady-State Evoked Potential (ASSR) is included in electrophysiological methods. 15…”