منابع مشابه
Head-shaking nystagmus
Head-shaking nystagmus. Head-Shaking Nystagmus (HSN) is a latent spontaneous vestibular nystagmus provoked by rapid passive head shaking around a vertical axis. HSN is not specific in distinguishing peripheral hypofunction from more central vestibular imbalances. This test is an excellent bedside test for detecting unilateral vestibular hypofunction but further rotatory and caloric testing will...
متن کاملAbnormal Head Position in Infantile Nystagmus Syndrome
Infantile nystagmus is an involuntary, bilateral, conjugate, and rhythmic oscillation of the eyes which is present at birth or develops within the first 6 months of life. It may be pendular or jerk-like and, its intensity usually increases in lateral gaze, decreasing with convergence. Up to 64% of all patients with nystagmus also present strabismus, and even more patients have an abnormal head ...
متن کامل[Diagnostic value of head-shaking nystagmus in vestibular clinical evaluation].
OBJECTIVES To determine the sensitivity and specificity of the head-shaking nystagmus test (HSN), the nystagmus elicited in response to a vigorous rotation of the head in the horizontal plane, in the study of patients with peripheral unilateral vestibular disease. PATIENTS AND METHODS Retrospectively, we analyze the relationships between the HSN and the rest of the videonystagmographic tests ...
متن کاملPure torsional nystagmus as a consequence of head trauma.
Conjugate torsional eye movements cannot be produced by volition, but do occur reflexly in a manner serving to retain visual fixation when the head is tilted (Cogan, 1956). In experimental animals conjugate torsional movements occur with stimulation of the zona incerta or the interstitial nucleus of Cajal (Hyde and Toczek, 1962). Spontaneous conjugate torsional eye movements in man appear clini...
متن کاملDirection and magnitude of head tilt alter postrotatory nystagmus.
TO THE EDITOR: We read the article by Wang and Lewis (2016) with a great interest. In this study, using the axis shift and dumping index, they found that the “residual sensory conflict” correlates with motion sickness susceptibility in patients with vestibular migraine. This could explain the motion intolerance and episodic vertigo that characterize vestibular migraine based on dysfunction of t...
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ژورنال
عنوان ژورنال: The Laryngoscope
سال: 1910
ISSN: 0023-852X
DOI: 10.1288/00005537-191001000-00001