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B. Answer Questions
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Human demo of HPD, showing movements by therapist (R ear down position) and a R EYE video.

  1. Describe the nystagmus in the supine position.

  2. Describe the nystagmus when brought to sitting

  3. What is the diagnosis?

1. Shows first Upbeating (perhaps with some slight R torsion),

2. then later Downbeating when returned to sitting.

3. Therefore it is Post SCC BPPV, possibly on the R side.