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Effect Of Electrocochleography Stimulus Rate And Intensity On Identification Of Noise Induced Hidden Hearing Loss In Humans, Amanda E. Mccarthy
Effect Of Electrocochleography Stimulus Rate And Intensity On Identification Of Noise Induced Hidden Hearing Loss In Humans, Amanda E. Mccarthy
MSU Graduate Theses
Noise exposure has been known to cause both temporary and permanent shifts in hearing thresholds in humans. Animal and human studies have shown noise exposure to lead to damage to the ribbon synapses of the cochlea. This damage, referred to as noise induced hidden hearing loss (NIHHL), is not detectable with standard hearing assessments, though can be the cause of difficulties understanding speech in the presence of background noise. Recent studies have begun to explore the use of electrocochleography (ECochG) to detect this neural damage in humans. Such studies strive to aid in the development of a clinical tool for …
Modulation Of Electrocochleography Responses By Contralateral Broadband Noise In Young Adults, Riley J. Rickman
Modulation Of Electrocochleography Responses By Contralateral Broadband Noise In Young Adults, Riley J. Rickman
MSU Graduate Theses
While it is known the auditory efferent system contains two distinct subgroups – the medial olivocochlear nucleus (MOC) and the lateral olivocochlear nucleus (LOC) – not much is known regarding the function of the LOC in humans. This study aims to evaluate the effect of activating the lateral olivocochlear (LOC) neurons via contralateral broad band noise (CBBN) on electrocochleography responses. A ten-minute time-blocked paradigm was utilized to evaluate both the slow and fast effect of the LOC neurons. Recordings were obtained at four points within this ten-minute block both with and without the presence of 50 dB SPL CBBN to …
The Effect Of Rate On Tone Burst Extratympanic Electrocochleography In Adults With Normal Hearing, Alana E. Kennedy
The Effect Of Rate On Tone Burst Extratympanic Electrocochleography In Adults With Normal Hearing, Alana E. Kennedy
MSU Graduate Theses
The recording of electrocochleography (ECochG) to tone burst stimuli with a high rate is hypothesized to provide advantages over standard click ECochG with slow rate. Specifically, the use of tone burst stimuli presented at a high rate may enhance the summating potential (SP) while also reducing neural contributions in the response. To allow for the analysis of the complex ECochG responses to high rates, the Continuous Loop Averaging Deconvolution (CLAD) technique was employed to deconvolve the responses. This study examined the effect of high rate and stimulus duration on the SP amplitude of tone burst extratympanic ECochG in 20 adult …