Interacoustics Nydiag 200, Operation Manual, Page: 30 / 35

Rotary Chair Nydiag 200 Page 23
6.5 Triangular test

The Smooth Pursuit and the SHAT test can also be performed with a triangular movement. During
each slope of the movement the acceleration is maintained at a constant level until the maximum
velocity is reached.

Purpose of Triangular: Rotation from right to left and back, or vice versa.

Stimulus: Acceleration up to peak velocity, then stop.

Relevant VNG test protocol: Data from “Triangular” can be recorded and analyzed in the
SinusPendular test

Testing the Triangular Function:

Velocity °/s
–
peak velocity just before end of cycle

Acceleration °/s²
–
time to reach velocity

Acceleration change
–
steady or increasing/decreasing acceleration from cycle to
cycle

Velocity change
–
steady or changing velocity from cycle to cycle

Number of cycles