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Beyond the specs. 
Deeper dive into Hearing & Balance solutions.

The head-shaking test in the horizontal plane

That rapid head movement could generate nystagmus was already known to Bárány in 1907, but it was Vogel who introduced head-shaking nystagmus (HSN) into clinical practice more than 20 years later. Head-shaking (HST) is one of the high-frequency tests for the noninstrumental clinical evaluation of vestibulopathic patients.

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