VIsualEyes 515/525 - Additional Information Page 99
Figure 8.4.3 SHA subtest settings
Test Name: Name of subtest
Duration: Define how long the eye movement is to be recorded and analyzed (in seconds). This value is
calculated based on the Frequency, Peak Velocity, and Number of Cycles.
Fixation light: Determines when the fixation light in the goggles is displayed. Manual (default) will leave the
operator to determine when the fixation light should be displayed. Timed will have the fixation light come on
automatically at the designated time.
Save Eye Recording: Choice to save eye video recordings.
Target Direction: Defines direction of target movement.
Extend end of Recording: If enabled the test will return the target back to center for two seconds. Not
recommended if the tests are run automatically.
Sinusoidal Harmonic Acceleration Settings:
Frequency: Define the frequency (Hz) of Stimulus (Chair motion side to side). The frequencies available
include 0.01 Hz to 0.32 Hz with increments of 0.01 Hz.
Peak Velocity: Define the peak velocity (in dps) the chair will rotate. Range of velocities is 1 to 200 degrees
per second.
Peak Acceleration: The maximum rate at which the chair can accelerate (in m/s
2
). This is automatically
calculated based on the sinusoidal harmonic acceleration settings.
Number of Cycles: The total number of cycles to be performed for this frequency of chair movement. The
initial half cycle is rejected automatically.
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