Evaluation of vestibular Evaluation of vestibular functionfunction2021/8/122021/8/121 12021/8/122021/8/122 2Balance is a highly integrated networknvestibular system -rotatory stimulation and linear acceleration Informationnproprioceptive system - information input from the feet, ankle, hip, and neck nocular system - visual perception of spatial orientation is supplied by thencentral nervous system - integrated these information and translated to fine motor movements 2021/8/122021/8/123 3Static balance testnRomberg test: useful in patients with an acute unilateral labyrinthine lesionnMann test: the patient stands heel to toe rather than with feet together nStatic posturography:2021/8/122021/8/124 4Dynamic balance testnDynamic posturography nCo-ordination function test: nPoint nose testnAlternative movementnFinger point 2021/8/122021/8/125 5Nystagmus n nNystagmusNystagmusn nSlow phase: hypoactivitySlow phase: hypoactivityn nQuick phase: hyperactivityQuick phase: hyperactivityn nDirection: quick movement of eyeDirection: quick movement of eyen nPlane: horizontal, rotary, verticalPlane: horizontal, rotary, verticaln nDegree: Degree: n nI: quick phase sideI: quick phase siden nII: quick phase side and look II: quick phase side and look forwardforwardn nIII: quick phase side, slow phase III: quick phase side, slow phase side and look forwardside and look forward2021/8/122021/8/126 6nOcular dysmetria test:nBrainstem, or cerebellum lesionnSmooth purpsuit test:nBrainstem or cerebellum lesionnOptokinetic nystagmusnLesion in central never systemnGaze nystagmus nLesion in central nerve system 2021/8/122021/8/127 7nCaloric test:nHorizontal semicircular canalnTemperature: 44 and 30nStimuli duration: 40snRotation test2021/8/122021/8/128 8n nFistula signFistula signn nFistula was blocked Fistula was blocked by granuloma or by granuloma or cholesteatomcholesteatomn nDead labyrinthDead labyrinthn nHennebert sign Hennebert sign n nTullio phenomenoTullio phenomeno2021/8/122021/8/129 9n(1) gaze (fixation) test,(2) ocular pursuit test,(3) optokinetic test,(4) static positional test,(5) dynamic positioning test, and(6) bithermal caloric test. 2021/8/122021/8/121010n9、 人的价值，在招收诱惑的一瞬间被决定。*n10、低头要有勇气，抬头要有低气。*n11、人总是珍惜为得到。*n12、人乱于心，不宽余请。*n13、生气是拿别人做错的事来惩罚自己。*n14、抱最大的希望，作最大的努力。*n15、一个人炫耀什么，说明他内心缺少什么。*n16、业余生活要有意义，不要越轨。*n17、一个人即使已登上顶峰，也仍要自强不息。*2021/8/122021/8/121111烦恼有何惧怕，既然躲不掉，就调好心态与它共存。心向阳光，何惧风霜。烦恼有何惧怕，既然躲不掉，就调好心态与它共存。心向阳光，何惧风霜。茫茫人海你我相遇就是缘分，欢迎下载！茫茫人海你我相遇就是缘分，欢迎下载！2021/8/122021/8/121212nThe normal response as the chair is rotated is slow compensatory eye movement in the direction opposite the rotation with a fast saccade to return the eye in the forward position. nThe test has three parameters-phase (time for the slow phase eye movement in relationship to the head rotation velocity), gain (ratio of maximum eye velocity to maximum chair velocity), and symmetry (compares the slow-phase eye velocity when rotating right versus left).52 2021/8/122021/8/121313nthe test addresses two major areas: n(1) motor control test which examines the patients motor system and the ability of the CANS to adapt to changing conditions, and(2) sensory organization test which examines proprioceptive, visual, and vestibular systems working as an integrated whole.2021/8/122021/8/121414characteristiccharacteristicPeripheralPeripheralCentralCentralSpontaneousSpontaneousNystagmusNystagmusdirectiondirectionintensityintensityHorizontalrotaryHorizontalrotaryDirectionfixedDirectionfixedDiminishedbyvisualDiminishedbyvisualfixationfixationIncreasedbygazeinIncreasedbygazeindirectionoffastphasedirectionoffastphaseAnydirectionAnydirectionNochangewithvisualNochangewithvisualfixationfixationGazehaslittleornoGazehaslittleornoeffecteffectEvokedNystagmusEvokedNystagmusLatencyLatencyDirectionDirectionDurationDurationfatigabilityfatigability2-10s2-10sPredominantlyrotaryPredominantlyrotary30s45s45sNoNo2021/8/122021/8/121515n9、 人的价值，在招收诱惑的一瞬间被决定。*n10、低头要有勇气，抬头要有低气。*n11、人总是珍惜为得到。*n12、人乱于心，不宽余请。*n13、生气是拿别人做错的事来惩罚自己。*n14、抱最大的希望，作最大的努力。*n15、一个人炫耀什么，说明他内心缺少什么。*n16、业余生活要有意义，不要越轨。*n17、一个人即使已登上顶峰，也仍要自强不息。*谢谢大家2021/8/122021/8/121616n9、 人的价值，在招收诱惑的一瞬间被决定。*n10、低头要有勇气，抬头要有低气。*n11、人总是珍惜为得到。*n12、人乱于心，不宽余请。*n13、生气是拿别人做错的事来惩罚自己。*n14、抱最大的希望，作最大的努力。*n15、一个人炫耀什么，说明他内心缺少什么。*n16、业余生活要有意义，不要越轨。*n17、一个人即使已登上顶峰，也仍要自强不息。*谢谢大家2021/8/122021/8/121717