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Updated: Sep 29, 2025
Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
Published on: January 9, 2019
Neural recovery function of the auditory nerve in cochlear implant surgery: Comparison between different regions of
Bettina Carvalho1,2, Gislaine Richter Minhoto Wiemes2, Nicole Richter Minhoto Wiemes2
1Complexo Hospital de Clínicas da UFPR, Curitiba, PR, Brazil.
Introduction:
Cochlear implants allow measures of neural function, through Neural response telemetry (NRT) and Auditory nerve recovery function (REC). These help in programming the speech processor and understanding the auditory system. However, not many studies have evaluated and compared these in different regions of the cochlea.
Objective:
Comparing NRT and REC in different regions of the cochlea.
Methods:
Cross-sectional, descriptive and prospective. NRT and REC (through the function of T0 - absolute refractory period, A - amplitude and TAU - time constant of the relative refractory period parameters) were evaluated, in three groups according to the stimulated electrode of the cochlea: apical, medial and basal.
Results:
26 adult patients were evaluated, 2 bilateral, totalling 28 ears. Data analysis showed no statistically significant difference between NRT between medial and basal but showed between apical and medial and apical and basal. For T0, there was a significant difference between medial and basal; for A, there was a significant difference between apical and basal and also medial and basal; and for TAU, there was no significant difference.
Conclusion:
There was a statistically significant difference in NRT and REC when compared between different regions of the cochlea.
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