Abstract:The objective of this cross-sectional study is to compare bone-conducted low-frequency hearing thresholds (BClf) to cervical vestibular evoked myogenic potentials (cVEMPs) findings in prelingual adult deaf patients. The fifty participants (100 ears) included twenty healthy controls and thirty other subjects selected from patients who presented with bilateral prelingual deafness to Department of Audiology of Hamadan University of Medical Sciences and Health Services (Hamadan, Iran). Assessments comprised of aud… Show more
“…Saccular vestibular projections is mainly ipsilateral, while processing of auditory signals is contralateral and mainly in the left hemisphere. The stimulation design is like to the horizontal semicircular canal [ 44 ] 27 McNerney et al [ 45 ]: Several regions of brain are motivated by otolith stimulation, which include the primary visual cortex, the precuneus, the precentral gyrus, the medial temporal gyrus, and the superior temporal gyrus [ 45 ] 28 Todd et al [ 46 ]: The SVSS contributes to formation the auditory T-complex of the auditory evoked potentials (AEP) in posterior lateral surface of the temporal lobe [ 46 ] 29 Emami [ 47 ]: There is false air bone gaps in pure tone audiograms of people with profound sensorineural hearing loss and normal cVEMPs. The false air bone gaps are better bone-conducted hearing thresholds in compared to air, in frequency range of 250–750 HZ.…”
Section: Resultsmentioning
confidence: 99%
“…False air bone gaps does not exist in people with profound sensorineural hearing loss and abnormal cVEMPs (Figs. 1 and 2 ) [ 47 ] Fig. 1 Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] Fig.…”
Section: Resultsmentioning
confidence: 99%
“…1 and 2 ) [ 47 ] Fig. 1 Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] Fig. 2 Pure tone audiogram of the left ear a person with profound sensorineural hearing loss and abnormal cVEMPs, bone-conducted hearing thresholds were not presence [ 47 ] …”
Section: Resultsmentioning
confidence: 99%
“… Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] …”
Sensitivity of vestibular system to sounds (SVSS) can be measureable by cervical vestibular evoked myogenic potentials (cVEMPs). The aim of this study is to investigate central representation of vestibular system sensitivity to sound. The research was conducted in 2022–2023 by searching English language databases. The criterion for selecting documents was their overlap with the aim of this work. The animals studies were not included. The saccule is stimulated by sounds, that are transmitted through air and bone conduction. Utricle and semicircular canals are activated only by the vibrations. The afferent nerve fibers of the vestibular system project to the temporal, frontal, parietal, primary visual cortex, insula and the cingulate cortex. There is a relationship between normal results of the cVEMPs and these parameters. Improved phonemes recognition scores and word recognition scores in white noise, the efficiency of auditory training, incraed amplitude of the auditory brainstem responses to 500 HZ tone burst. Learning the first words is not only based on the hearing and other senses participate. The auditory object is a three-dimensional imaging in people's minds, when they hear a word. The words expressed by a speaker create different auditory objects in people's minds. Each of these auditory objects has its own color, shape, aroma and characteristics. For the formation of the auditory objects, all senses and whole areas of the brain contribute. Like other senses, central representation of vestibular system sensitivity to sound are also involved in the formation of auditory objects.
“…Saccular vestibular projections is mainly ipsilateral, while processing of auditory signals is contralateral and mainly in the left hemisphere. The stimulation design is like to the horizontal semicircular canal [ 44 ] 27 McNerney et al [ 45 ]: Several regions of brain are motivated by otolith stimulation, which include the primary visual cortex, the precuneus, the precentral gyrus, the medial temporal gyrus, and the superior temporal gyrus [ 45 ] 28 Todd et al [ 46 ]: The SVSS contributes to formation the auditory T-complex of the auditory evoked potentials (AEP) in posterior lateral surface of the temporal lobe [ 46 ] 29 Emami [ 47 ]: There is false air bone gaps in pure tone audiograms of people with profound sensorineural hearing loss and normal cVEMPs. The false air bone gaps are better bone-conducted hearing thresholds in compared to air, in frequency range of 250–750 HZ.…”
Section: Resultsmentioning
confidence: 99%
“…False air bone gaps does not exist in people with profound sensorineural hearing loss and abnormal cVEMPs (Figs. 1 and 2 ) [ 47 ] Fig. 1 Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] Fig.…”
Section: Resultsmentioning
confidence: 99%
“…1 and 2 ) [ 47 ] Fig. 1 Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] Fig. 2 Pure tone audiogram of the left ear a person with profound sensorineural hearing loss and abnormal cVEMPs, bone-conducted hearing thresholds were not presence [ 47 ] …”
Section: Resultsmentioning
confidence: 99%
“… Pure tone audiogram of the right ear a person with profound sensorineural hearing loss and false air-bone gaps (ABG) in 250-500HZ, and normal cVEMPs [ 47 ] …”
Sensitivity of vestibular system to sounds (SVSS) can be measureable by cervical vestibular evoked myogenic potentials (cVEMPs). The aim of this study is to investigate central representation of vestibular system sensitivity to sound. The research was conducted in 2022–2023 by searching English language databases. The criterion for selecting documents was their overlap with the aim of this work. The animals studies were not included. The saccule is stimulated by sounds, that are transmitted through air and bone conduction. Utricle and semicircular canals are activated only by the vibrations. The afferent nerve fibers of the vestibular system project to the temporal, frontal, parietal, primary visual cortex, insula and the cingulate cortex. There is a relationship between normal results of the cVEMPs and these parameters. Improved phonemes recognition scores and word recognition scores in white noise, the efficiency of auditory training, incraed amplitude of the auditory brainstem responses to 500 HZ tone burst. Learning the first words is not only based on the hearing and other senses participate. The auditory object is a three-dimensional imaging in people's minds, when they hear a word. The words expressed by a speaker create different auditory objects in people's minds. Each of these auditory objects has its own color, shape, aroma and characteristics. For the formation of the auditory objects, all senses and whole areas of the brain contribute. Like other senses, central representation of vestibular system sensitivity to sound are also involved in the formation of auditory objects.
“…Also, the sensation of the sound at low frequencies may be present in patients with total deafness and normal vestibular function (predominantly saccule). This improvement disappears when saccular function is lost [ 24 ]. In the case of healthy hearing human and in presence of severe competing noise, saccule has a facilitating role in cochlea and can improve detection of loud low frequencies [ 25 ].…”
Since saccular projection is sound sensitive, the objective is to investigate the possibility that the saccular projections may contribute to auditory brainstem response to 500 HZ tone burst (ABR500 HZ). During the case-control research, twenty healthy controls compared to forty selected case groups as having chronic and resistant BPPV were evaluated in the audiology department of Hamadan University of Medical Sciences (Hamadan, Iran). Assessment is comprised of audiologic examinations, cervical vestibular evoked myogenic potentials (cVEMPs), and ABR500 HZ. We found that forty affected ears of BPPV patients with decreased vestibular excitability as detected by abnormal cVEMPs had abnormal results in ABR500 HZ, whereas unaffected ears presented normal findings. Multiple comparisons of mean p13, n23 latencies, and peak-to-peak amplitudes between three groups (affected, unaffected, and healthy ears) were significant. In conclusion, the saccular nerves can be projective to auditory bundles and interact with auditory brainstem response to low frequencies. Combine the cVEMPs and ABR500 HZ in battery approach tests of vestibular assessment and produce valuable data for judgment on the site of lesion. Regarding vestibular cooperation for making of wave V, it is reasonable that the term of ABR500 HZ is not adequate and the new term or vestibular-auditory brainstem response to 500 HZ tone burst is more suitable.
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