Objective:This study aimed to develop and evaluate a novel software tool for robust analysis of the Visually Enhanced Vestibular-Ocular Reflex(VVOR)and video head impulse test(vHIT)saccades.Methods:A retrospective stu...Objective:This study aimed to develop and evaluate a novel software tool for robust analysis of the Visually Enhanced Vestibular-Ocular Reflex(VVOR)and video head impulse test(vHIT)saccades.Methods:A retrospective study was conducted on 94 patients with Meniere’s Disease(MD),unilateral vestibular hypofunction(UVH),and vestibular migraine(VM).The MATLAB-based VVOR Analysis System and Saccades All in One software were utilized for data processing.New techniques,VVOR_diff and VVOR_cycle,were deployed for saccade parameter extraction.Results:Saccade incidence rates,examined through vHIT,VVOR_diff,and VVOR_cycle,exhibited distinct patterns in MD,UVH,and VM patients.Frequent instances of multiple saccades within a single cycle were noted on the affected side in MD and UVH patients.Statistically significant differences in saccade gain and incidence rates between the affected and unaffected sides were evident in MD and UVH patients.Notably,high inter-method and intra-method correlations suggested consistency across different methods and potential interactions within one.Conclusion:The software proved effective in extracting saccades and reducing noise in VVOR data,thereby enhancing the evaluation of vestibular function and potentially improving diagnostic accuracy for vestibular disorders.展开更多
目的：了解刺激声强度差异对正常人气导短纯音诱发的眼肌前庭诱发肌源性电位（ocular vestibular-evoked myogenic potential, oVEMP）和颈肌前庭肌源性诱发电位（cervical vestibular-evoked myogenic potential, cVEMP）的影响。方法...目的：了解刺激声强度差异对正常人气导短纯音诱发的眼肌前庭诱发肌源性电位（ocular vestibular-evoked myogenic potential, oVEMP）和颈肌前庭肌源性诱发电位（cervical vestibular-evoked myogenic potential, cVEMP）的影响。方法选择国人正常人35例作为研究对象，男16例，女19例，年龄4~40岁（20.80±8.89），以500Hz tone brust为刺激音，按照100、95、90、85、80、75 dB nHL依次进行气导oVEMP和cVEMP检测，计算VEMP在不同刺激声强度的引出率、nI潜伏期、pI潜伏期、nI-pI波间期、振幅值和AR值，进行波形参数计算和声强度组间对比。结果全组正常人oVEMP和cVEMP的阈值分别为86.5±4.37 dB nHL、83.57±4.52 dB nHL。随着刺激声强度的减弱，无论oVEMP还是cVEMP，均表现出引出率下降、振幅减低等特点。在刺激声强度为100 dB nHL和95 dB nHL时，oVEMP和cVEMP的引出率均为100%，两者之间图形参数差异并不显著。结论随着刺激声强度的减弱，oVEMP和cVEMP出现引出率下降、振幅减低的趋势。对于40岁以下的国人人群，建议采用95 dB nHL作为VEMPs测试的最大起始刺激强度。展开更多
基金supported by grants from National Science and Technology Ministry Key Research and Development Program–Project(2022YFC2402703).
文摘Objective:This study aimed to develop and evaluate a novel software tool for robust analysis of the Visually Enhanced Vestibular-Ocular Reflex(VVOR)and video head impulse test(vHIT)saccades.Methods:A retrospective study was conducted on 94 patients with Meniere’s Disease(MD),unilateral vestibular hypofunction(UVH),and vestibular migraine(VM).The MATLAB-based VVOR Analysis System and Saccades All in One software were utilized for data processing.New techniques,VVOR_diff and VVOR_cycle,were deployed for saccade parameter extraction.Results:Saccade incidence rates,examined through vHIT,VVOR_diff,and VVOR_cycle,exhibited distinct patterns in MD,UVH,and VM patients.Frequent instances of multiple saccades within a single cycle were noted on the affected side in MD and UVH patients.Statistically significant differences in saccade gain and incidence rates between the affected and unaffected sides were evident in MD and UVH patients.Notably,high inter-method and intra-method correlations suggested consistency across different methods and potential interactions within one.Conclusion:The software proved effective in extracting saccades and reducing noise in VVOR data,thereby enhancing the evaluation of vestibular function and potentially improving diagnostic accuracy for vestibular disorders.
文摘目的研究不同刺激声在坐姿下诱发的前庭诱发肌源性电位(vestibular-evoked myogenic potentials,VEMPs)特征,提供各波潜伏期及振幅等参数的正常值参考范围。方法分别用500 Hz短纯音(tone-burst)及500 Hz线性调频脉冲音(CE-chirp)两种刺激声对21名(男11人,女10人)听力正常且无耳蜗及前庭系统疾病的青年人(年龄22~33岁,平均年龄23.95±3.29岁)进行VEMPs测试,测试起始强度为110 dB nHL,以5 dB为步阶测试至阈值,记录各强度参数,并进行分析。结果两种刺激声坐姿下诱发的cVEMP及oVEMP阈值分别为tone-burst cVEMP 85.00±6.10 dB nHL,CE-chirp cVEMP 84.63±4.99 dB nHL;tone-burst oVEMP 83.38±6.54 dB nHL,CE-chirp oVEMP 82.50±6.20 dB nHL。两种刺激声测得的各强度p1潜伏期、n1潜伏期有显著差异(P<0.05),p1-n1波间期、p1-n1振幅、双侧不对称性、双侧振幅比、双侧对称系数等均无显著差异(P>0.05)。结论坐姿下正常青年人两种刺激声给声强度100 dB nHL时VEMPs的引出率均为100%,500 Hz线性调频脉冲音可作为VEMPs测试的刺激声应用于临床,评估椭圆囊和球囊功能。
文摘目的：了解刺激声强度差异对正常人气导短纯音诱发的眼肌前庭诱发肌源性电位（ocular vestibular-evoked myogenic potential, oVEMP）和颈肌前庭肌源性诱发电位（cervical vestibular-evoked myogenic potential, cVEMP）的影响。方法选择国人正常人35例作为研究对象，男16例，女19例，年龄4~40岁（20.80±8.89），以500Hz tone brust为刺激音，按照100、95、90、85、80、75 dB nHL依次进行气导oVEMP和cVEMP检测，计算VEMP在不同刺激声强度的引出率、nI潜伏期、pI潜伏期、nI-pI波间期、振幅值和AR值，进行波形参数计算和声强度组间对比。结果全组正常人oVEMP和cVEMP的阈值分别为86.5±4.37 dB nHL、83.57±4.52 dB nHL。随着刺激声强度的减弱，无论oVEMP还是cVEMP，均表现出引出率下降、振幅减低等特点。在刺激声强度为100 dB nHL和95 dB nHL时，oVEMP和cVEMP的引出率均为100%，两者之间图形参数差异并不显著。结论随着刺激声强度的减弱，oVEMP和cVEMP出现引出率下降、振幅减低的趋势。对于40岁以下的国人人群，建议采用95 dB nHL作为VEMPs测试的最大起始刺激强度。
