References
Halmagyi GM, Curthoys IS. A clinical sign of canal paresis. Arch Neurol. 1988;45:737–9.
Kirchner H, Kremmyda O, Hufner K, Stephan T, Zingler V, Brandt T, et al. Clinical, electrophysiological, and MRI findings in patients with cerebellar ataxia and a bilaterally pathological head-impulse test. Ann N Y Acad Sci. 2011;1233:127–38.
Kremmyda O, Kirchner H, Glasauer S, Brandt T, Jahn K, Strupp M. False-positive head-impulse test in cerebellar ataxia. Front Neurol. 2012;3:162.
Park HK, Kim JS, Strupp M, Zee DS. Isolated floccular infarction: impaired vestibular responses to horizontal head impulse. J Neurol. 2013. (in press)
Walker MF, Zee DS. Directional abnormalities of vestibular and optokinetic responses in cerebellar disease. Ann N Y Acad Sci. 1999;871:205–20.
Walker MF, Zee DS. Cerebellar disease alters the axis of the high-acceleration vestibuloocular reflex. J Neurophysiol. 2005 Nov;94:3417–29.
Leigh RJ, Zee DS. The neurology of eye movements. 4th ed. New York: Oxford University Press; 2006.
Kheradmand A, Zee DS. Cerebellum and ocular motor control. Front Neurol. 2011;2:53.
Zhang Y, Partsalis AM, Highstein SM. Properties of superior vestibular nucleus flocculus target neurons in the squirrel monkey. I. General properties in comparison with flocculus projecting neurons. J Neurophysiol. 1995;73:2261–78.
Walker MF, Tian J, Shan X, Tamargo RJ, Ying H, Zee DS. Lesions of the cerebellar nodulus and uvula impair downward pursuit. J Neurophysiol. 2008;100:1813–23.
Glasauer S, Hoshi M, Büttner U. Smooth pursuit in patients with downbeat nystagmus. Ann N Y Acad Sci. 2005;1039:532–5.
Marti S, Bockisch CJ, Straumann D. Prolonged asymmetric smooth-pursuit stimulation leads to downbeat nystagmus in healthy human subjects. Invest Ophthalmol Vis Sci. 2005;46:143–9.
Marti S, Straumann D, Büttner U, Glasauer S. A model-based theory on the origin of downbeat nystagmus. Exp Brain Res. 2008;188:613–31.
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The video demonstrates upward deflection during horizontal head impulse. (WMV 4513 kb)
Dissociated gain of vertical head impulse, i.e., decreased during upward pitch and increased during downward pitch, is shown on video clip. (WMV 1772 kb)
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Jeong, SH., Kim, JS., Baek, I.C. et al. Perverted Head Impulse Test in Cerebellar Ataxia. Cerebellum 12, 773–775 (2013). https://doi.org/10.1007/s12311-013-0480-0
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DOI: https://doi.org/10.1007/s12311-013-0480-0