The Effect of Stimulus Rates in Chirp and Click Evoked Auditory Brainstem Response in Adults with Normal Hearing Sensitivity
Main Article Content
Abstract
Introduction
The effects of increasing stimulus repetition rate on the ABR using click stimuli have been investigated in normal and hearing impaired subjects with neurologic abnormality but there is limited study on the effect of stimulus repetition rate on ABR using chirp stimuli. The present study aims to compare the chirp evoked auditory brainstem responses with reference to changes in latency of peaks, interaural latency differences and interwave latency intervals as a function of rate and compare those responses with the click evoked auditory brainstem responses, in normal hearing subjects.
Materials and Methods
Total 30 normally hearing adults were considered for this study. All participants were screened for normal hearing sensitivity upto 8 kHz in pure tone audiometry for middle ear pathology and central auditory processing disorder. Four parameters of ABR were considered to assess in this study including absolute latency, interwave latency intervals, latency-rate function and interaural latency. ABR was done based on the protocol of this study.
Results
Results revealed that there was a significant difference in the absolute latency and interwave intervals when the stimulus repetition rate was increased.
Conclusion
The latencies of wave III and V increases and waveform morphology changed as the stimulus repetition rate increased above 20/sec. The absolute latency of wave III and V was found to be shorter than clicks and can be used especially in newborn hearing evaluation assuming in shorter time window.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
Stapells DR, Picton TW, Abalo MP, Read D, Smith A. Frequency specificity in evoked potential audiometry. In T.T. Jacobson (Ed) The auditory brainstem response. San Diego: College Hill Press, Inc. 1985; 147-77
Jewett D, Williston J. Auditory-evoked far fields averaged from the scalp of humans. Brain 1971;94(4):681-96
Sohmer H, Feinmesser M, Szabo G. Sources of electrocochleographic responses as studied in patients with brain damage. Electroencephalography and Clinical Neurophysiology 1974; 37(6):663-9
Starr A, Achor L. Auditory Brain Stem Responses in Neurological Disease. Archives of Neurology. 1975; 32(11):761-8
Starr A, Hamilton AE. Correlation between confirmed sites of neurological lesions and abnormalities of far-field auditory brainstem responses. Electroencephalography and Clinical Neurophysiology 1976;41(6):595-608
Stockard J, Rossiter V. Clinical and pathologic correlates of brain stem auditory response abnormalities. Neurology 1977; 27(4):316
Hood LJ. Clinical applications of the Auditory Brainstem Response. San Deigo: Singular Publishing Group, Inc. 1998; 49-63
Hecox K, Galambos R. Brain Stem Auditory Evoked Responses in Human Infants and Adults. Archives of Otolaryngology - Head and Neck Surgery 1974;99(1):30-33
Stockard J, Westmoreland B. Technical Considerations in the Recording and Interpretation of the Brainstem Auditory Evoked Potential for Neonatal Neurologic Diagnosis. American Journal of EEG Technology 1981; 21(1):31-54
Kodera K, Yamane H, Yamada O, Suzuki J. The Effect of Onset, Offset and Rise-Decay Times of Tone Bursts on Brain Stem Response. Scandinavian Audiology 1977; 6(4):205-10
Gorga M, Thornton A. The Choice of Stimuli for ABR Measurements. Ear and Hearing. 1989; 10(4):217-30
Picton TW, Ouelette K, Hamel G, Smith AD. Brainstem evoked potential to tone pips in notched noise. Journal of Otolaryngology 1979; 8:289-314
Dau T, Wegner O, Mellert V, Kollmeier B. Auditory brainstem responses with optimized chirp signals compensating basilar-membrane dispersion. The Journal of the Acoustical Society of America. 2000;107(3):1530-40
Fobel O, Dau T. Searching for the optimal stimulus eliciting auditory brainstem responses in humans. The Journal of the Acoustical Society of America 2004;116(4):2213-22
Cebulla M, Lurz H, Shehata-Dieler W. Evaluation of waveform, latency and amplitude values of chirp ABR in newborns. International Journal of Pediatric Otorhinolaryngology. 2014; 78(4):631-6
Hamada SM, Latif SMA, Abumoussa HI. The Verification of ABR Response by Using the Chirp Stimulus in Moderate Sensorineural Hearing Loss. Medical Journal of Cairo University 2013:81(2), 21-6
Hall JW III. Update on auditory evoked responses: value of chirp stimuli in ABR/ASSR measurement. Audiology Online; June 27, 2016; article 17434.
Teas D, Eldredge D, Davis H. Cochlear Responses to Acoustic Transients: An Interpretation of Whole‐Nerve Action Potentials. The Journal of the Acoustical Society of America 1962; 34(9B):1438-59.