Burkard, R. F., & Sims, D. (2001). The Human Auditory Brainstem Response to High Click Rates: Aging Effects. American Journal of Audiology, 10, 53-61. doi:10.1044/1059-0889(2001/008) Although extensive research has been conducted to determine the effects of aging on peripheral hearing sensitivity, the effects of aging on the central auditory nervous system through the use of auditory brainstem response (ABR) procedures is less commonly researched. A previous study attempted to examine the effects of aging on the central auditory nervous system through the use of ABR wave V latencies, but the results were inconsistent due to the absence of wave I latencies. Through the use of high intensity click stimulation rates, the current study analyzed
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An inverting electrode placed on the tympanic membrane of participants and a high intensity click rate of 115 dB sSPL was utilized to measure ABRs from 10 to 500 Hertz (Burkard & Sims, 2001). A combination of a conventional technique and a cross-correlation maximum length sequences (MLSs) technique was utilized to measure ABR responses at 11, 25, 50, and 75 Hertz and 100, 200, 300, 400, and 500 Hertz, respectively (Burkard & Sims, 2001). Two responses of condensation and rarefaction click polarities were recorded for both techniques. The click rate repetitions for the conventional and MLS techniques were utilized to label Waves I and …show more content…
Although all rates for the duration of waves I-V yielded resembling results for both the older and younger populations, wave I and V latencies were extended for the older participants compared to the younger participants. The amplitude of wave I and wave V were both decreased in the results of the older participants; however, the amplitude of wave V was decreased solely at decreased click rate intensities. Although there were decreased wave V and wave I through V latencies and increased wave I latencies for the older participants identified with a mild hearing impairment, the effect of click rate variations between older participants with hearing impairments and normal listening participants, as well as younger participants, was not clearly defined. The results concluded that high intensity rates do not yield extended wave V and wave I-V interval latencies; however, further research should be conducted to determine the effect of rate variations between older and younger
An inverting electrode placed on the tympanic membrane of participants and a high intensity click rate of 115 dB sSPL was utilized to measure ABRs from 10 to 500 Hertz (Burkard & Sims, 2001). A combination of a conventional technique and a cross-correlation maximum length sequences (MLSs) technique was utilized to measure ABR responses at 11, 25, 50, and 75 Hertz and 100, 200, 300, 400, and 500 Hertz, respectively (Burkard & Sims, 2001). Two responses of condensation and rarefaction click polarities were recorded for both techniques. The click rate repetitions for the conventional and MLS techniques were utilized to label Waves I and …show more content…
Although all rates for the duration of waves I-V yielded resembling results for both the older and younger populations, wave I and V latencies were extended for the older participants compared to the younger participants. The amplitude of wave I and wave V were both decreased in the results of the older participants; however, the amplitude of wave V was decreased solely at decreased click rate intensities. Although there were decreased wave V and wave I through V latencies and increased wave I latencies for the older participants identified with a mild hearing impairment, the effect of click rate variations between older participants with hearing impairments and normal listening participants, as well as younger participants, was not clearly defined. The results concluded that high intensity rates do not yield extended wave V and wave I-V interval latencies; however, further research should be conducted to determine the effect of rate variations between older and younger