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Paraspinal muscle response to electrical vestibular stimulation

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dc.contributor.author Ardıç, Fazıl Necdet
dc.contributor.author Latt, L.D.
dc.contributor.author Mark S, R.
dc.date.accessioned 2019-08-16T11:48:49Z
dc.date.available 2019-08-16T11:48:49Z
dc.date.issued 2000
dc.identifier.issn 00016489 (ISSN)
dc.identifier.uri http://acikerisim.pau.edu.tr:8080/xmlui/handle/11499/5529
dc.description.abstract Galvanic (electrical) vestibular stimulation (GVS) has been used to study the role of the vestibular system in postural control by inducing postural sway in standing subjects. The purpose of this study was to determine the timing and pattern of activation in the paraspinal muscles in response to GVS and to compare these responses with those in the muscles of the lower leg. Binaural-bipolar GVS was applied to the skin overlying the mastoid processes of 10 subjects while they stood on a force plate with their eyes closed. The stimulus consisted of a 0.6 mA 5-pulse sequence. Each pulse lasted for 2 s, followed by 4 s of rest. The centre of pressure (COP) vs. time for each trial was calculated from the reaction forces and moments. Surface electromyographic (EMG) signals from the paraspinal and gastrocnemius muscles were recorded bilaterally. The EMG signals were rectified and integrated (iEMG). The iEMG from the muscles on the cathodal side of the body were then subtracted from the iEMG of the anodal side muscles, to yield a differential EMG (dEMG). Both the paraspinal and gastrocnemius muscles became activated in response to the stimulus. The pattern of activation was consistent with the changes observed in the centre of pressure. The primary response in both muscles acted to move the body toward the anode. This primary response began at 74 ± 20 ms in the paraspinal muscles and at 118 ± 18 ms in the gastrocnemius. A second component of the response began at 232 ± 27 ms in the paraspinal muscles and 262 ± 54 ms in the gastrocnemius muscles. This second phase of the response was opposite in direction to the primary response and was responsible for decelerating the body and maintaining the deviated position of the centre of mass over the base of support. Following the termination of the stimulus, the opposite pattern of muscle activation in both the paraspinal and the gastrocnemius muscles was observed. The results of this study suggest that the paraspinal muscles may play a significant role in the frontal plane response to vestibular stimulation during stance in humans.
dc.language.iso English
dc.rights info:eu-repo/semantics/closedAccess
dc.subject Electromyography
dc.subject Galvanic stimulus
dc.subject Paraspinal muscles
dc.subject Posture
dc.subject Vestibular
dc.subject adult
dc.subject article
dc.subject back muscle
dc.subject body posture
dc.subject clinical article
dc.subject controlled study
dc.subject differential diagnosis
dc.subject electrodermal response
dc.subject electromyography
dc.subject electrostimulation
dc.subject female
dc.subject gastrocnemius muscle
dc.subject human
dc.subject inner ear disease
dc.subject male
dc.subject mastoid
dc.subject muscle function
dc.subject priority journal
dc.subject standing
dc.subject vestibular function
dc.subject vestibular nervous system
dc.subject vestibular stimulation
dc.subject Adult
dc.subject Electric Stimulation
dc.subject Female
dc.subject Humans
dc.subject Male
dc.subject Muscle, Skeletal
dc.subject Spine
dc.subject Time Factors
dc.subject Vestibule
dc.title Paraspinal muscle response to electrical vestibular stimulation
dc.type Article
dc.relation.journal Acta Oto-Laryngologica
dc.contributor.authorID 0000-0003-4230-3141
dc.identifier.volume 120
dc.identifier.issue 1
dc.identifier.startpage 39
dc.identifier.endpage 46
dc.relation.publicationCategory Uluslararası Hakemli Dergi
dc.identifier.index Scopus
dc.identifier.index WOS
dc.identifier.index PubMed

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