Start Test; Impulse Counter - Interacoustics EyeSeeCam Instructions For Use Manual

Start test

Select Start and begin doing lateral impulses.
The head of the patient should be turned horizontally to one side with high velocity, high acceleration, and
small displacement. The direction should not be predictable for the patient and there should be different
time intervals between the head impulses. After an impulse, the head should be held in the end position
for a few seconds and then slowly rotated back to the initial position. Peak head velocity should be
assessed right after each head impulse. If necessary, try relaxing the patient with slow head movements
before starting the test for a better tolerance of the high peak head velocity necessary. It is important to
avoid touching the goggles or stretching the patient's skin while applying the head impulse to avoid
artifacts.
Figure 4.4.10-1 Start Data collection screen

Impulse counter

Each correct impulse you perform will generate an increasing count number in the upper left hand corner.
This number will count every impulse you perform that produces a green check mark, but not the
impulses that produce red X's. In the final report, the number of impulses will be the same as you see
during the data collection unless there was artifact or noise present, and then the final algorithm will
remove that tracing from the final report.
EyeSeeCam vHIT - Instructions for Use - EN Page 28