VIsualEyes 515/525 - Additional Information Page 111
9.7 Sinusoidal harmonic acceleration tests
For SHA tests, threhold values for gain, phase, and symmetry are displayed. There are values for both
discrete velocity tests (based on 60 deg/sec for all frequencies) and variable velocity (increased velocity with
decreased frequency). See the following references below for threshold values.
Reference:
SHA Variable or Discrete Velocity threshold values referenced from Henry, D.F. publication: Closed-Loop,
Sinusoidal Harmonic Acceleration, and Active Head Rotation Tests Norms and Reliability. Otolaryngol Head
and Neck Surg. 1553; 65: 531-43.
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