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J. Ilson, K. J. Ciuffreda; Dizziness: Simple Clinical Test Battery To Evaluate Hyperstimulation Syndromes. Invest. Ophthalmol. Vis. Sci. 2009;50(13):4041.
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It is well known that some individuals without apparent neurological disease are hypersensitive to motion, especially in the peripheral visual fields. Furthermore, many patients with head trauma, stroke, and even migraine exhibit a similar but more exaggerated heightened response. We sought to develop simple, inexpensive procedures to reproduce these phenomena in a clinical setting
We examined 20 symptomatic patients/subjects and 15 asymptomatic subjects using a rapidly moving OKN drum, repeated convergence to near-point, proprioceptive neck vibration, with a total test time of less than five minutes.
All previously symptomatic subjects experienced their stereotypic hypersensitivity to all of the above whereas asymptomatic controls did not exhibit a similar response. The stereotypic hypersensitivity response included disorientation, panic, nausea, a variety of visual phenomena (diplopia, visual tilt, visual avoidance of complex patterns), dizziness and/or gait ataxia sometimes lasting several hours.
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