Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing
Background: Despite cochlear microphonic’s potential clinical application, especially in ANSD diagnosis, the optimal parameters to record cochlear microphonics and the effect of various stimulus parameters are not well understood yet, which makes its recording a difficult procedure. The present stud...
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AVES
2024-11-01
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| Series: | Journal of International Advanced Otology |
| Online Access: | https://www.advancedotology.org/en/unraveling-cochlear-dynamics-the-effect-of-clicks-tone-burst-frequencies-polarity-and-stimulus-rates-on-cochlear-microphonics-in-individuals-with-normal-hearing-131965 |
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| author | Prajwal Kumar Eranna Gowtham Varma Animesh Barman |
| author_facet | Prajwal Kumar Eranna Gowtham Varma Animesh Barman |
| author_sort | Prajwal Kumar Eranna |
| collection | DOAJ |
| description | Background: Despite cochlear microphonic’s potential clinical application, especially in ANSD diagnosis, the optimal parameters to record cochlear microphonics and the effect of various stimulus parameters are not well understood yet, which makes its recording a difficult procedure. The present study was undertaken to determine the effect of stimulus polarity, rate, stimulus type, and stimulus frequency on different aspects of cochlear microphonics, which could help to decide an optimal stimulus parameter that can be used to record CM.
Methods: The study involved 32 normal-hearing adults. CM was recorded from these individuals using extratympanic CM measurement from the ear canal independently for tone burst frequencies (500 Hz, 1 kHz, 4 kHz & 8 kHz) and click stimuli having rarefaction and condensation polarity at 30.1/sec and 59.1/sec repetition rates. Amplitude and latency were measured from the recorded waveforms and compared across and between stimulus conditions.
Results: Results reveal that stimulus frequency and stimulus type have a significant effect on different parameters of CM. However, there was no significant effect of stimulus polarity and rate of stimulus on the amplitude and latency of cochlear microphonics. The amplitude and latency of the cochlear microphonics are inversely proportional to the stimulus frequency.
Conclusion: Hence, the study suggests the use of low-frequency tone burst (500 Hz/1 kHz) to elicit robust CM, which has greater application in the assessment of cochlear functioning over OAE as the latter gets affected by environmental and physiological noise and also due to middle ear pathology. |
| format | Article |
| id | doaj-art-f2367c103c9446618b8fbcb407355dec |
| institution | Kabale University |
| issn | 2148-3817 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | AVES |
| record_format | Article |
| series | Journal of International Advanced Otology |
| spelling | doaj-art-f2367c103c9446618b8fbcb407355dec2025-01-30T08:53:20ZengAVESJournal of International Advanced Otology2148-38172024-11-0120649450110.5152/iao.2024.241662Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal HearingPrajwal Kumar Eranna0https://orcid.org/0000-0002-2072-0035Gowtham Varma1https://orcid.org/0000-0001-7356-8666Animesh Barman2https://orcid.org/0000-0001-8158-7584Nitte (Deemed to be University), Nitte Institute of Speech and Hearing, Mangalore, IndiaAnvi Hearing Solutions, Pune, IndiaDepartment of Audiology, All India Institute of Speech and Hearing, Mysuru, IndiaBackground: Despite cochlear microphonic’s potential clinical application, especially in ANSD diagnosis, the optimal parameters to record cochlear microphonics and the effect of various stimulus parameters are not well understood yet, which makes its recording a difficult procedure. The present study was undertaken to determine the effect of stimulus polarity, rate, stimulus type, and stimulus frequency on different aspects of cochlear microphonics, which could help to decide an optimal stimulus parameter that can be used to record CM. Methods: The study involved 32 normal-hearing adults. CM was recorded from these individuals using extratympanic CM measurement from the ear canal independently for tone burst frequencies (500 Hz, 1 kHz, 4 kHz & 8 kHz) and click stimuli having rarefaction and condensation polarity at 30.1/sec and 59.1/sec repetition rates. Amplitude and latency were measured from the recorded waveforms and compared across and between stimulus conditions. Results: Results reveal that stimulus frequency and stimulus type have a significant effect on different parameters of CM. However, there was no significant effect of stimulus polarity and rate of stimulus on the amplitude and latency of cochlear microphonics. The amplitude and latency of the cochlear microphonics are inversely proportional to the stimulus frequency. Conclusion: Hence, the study suggests the use of low-frequency tone burst (500 Hz/1 kHz) to elicit robust CM, which has greater application in the assessment of cochlear functioning over OAE as the latter gets affected by environmental and physiological noise and also due to middle ear pathology.https://www.advancedotology.org/en/unraveling-cochlear-dynamics-the-effect-of-clicks-tone-burst-frequencies-polarity-and-stimulus-rates-on-cochlear-microphonics-in-individuals-with-normal-hearing-131965 |
| spellingShingle | Prajwal Kumar Eranna Gowtham Varma Animesh Barman Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing Journal of International Advanced Otology |
| title | Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing |
| title_full | Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing |
| title_fullStr | Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing |
| title_full_unstemmed | Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing |
| title_short | Unraveling Cochlear Dynamics: The Effect of Clicks, Tone Burst Frequencies, Polarity, and Stimulus Rates on Cochlear Microphonics in Individuals with Normal Hearing |
| title_sort | unraveling cochlear dynamics the effect of clicks tone burst frequencies polarity and stimulus rates on cochlear microphonics in individuals with normal hearing |
| url | https://www.advancedotology.org/en/unraveling-cochlear-dynamics-the-effect-of-clicks-tone-burst-frequencies-polarity-and-stimulus-rates-on-cochlear-microphonics-in-individuals-with-normal-hearing-131965 |
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