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Ecleris VNG Plus - Fixation Index Calculation Method

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47
Cefalic impulse count (VHIT)
The analysis is done by separating impulses to Rightward and Leftward from the top
pull-down menu.
For each impulse, the response of the eye in speed and acceleration (green) is
plotted next to the cephalic impulse (red) and the relevant parameters of the same as
gain, maximum speed of eye and head, duration, etc.
The averages of the impulse analysis are shown in graphical form and numerical
data.
Automatic editing:
With the automatic discard option enabled. Increase (+) or decrease (-) the sensitivity
by modifying the gain dispersion: | Gi-Gprom |, those impulses whose gain differs
from the average of the specified value will be discarded. Then press the Re-Analyze
button, so that they are evaluated with pulses with the new sensitivity
Manual editing:
Those impulses that due to their characteristics (acceleration, speed) you want to
ignore in the analysis, you can discard them manually.
1. Click on the right or left arrows to observe each impulse. The impulse is numbered
in the counter
2. Activate the discarded option

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