Vertical Impulses- Ralp/Larp Protocols; Direction/Plane Guide - Interacoustics EyeSeeCam Instructions For Use Manual

EyeSeeCam vHIT Instructions for Use – EN Page 29

4.5 Vertical impulses- RALP/LARP protocols

For testing in the vertical planes you can select RALP and LARP protocols (right anterior, left posterior
and left anterior, right posterior).
Figure 4-23 Head impulse testing – vertical canals

4.5.1 Direction/plane guide

This guide is shown in the upper right hand corner for the vertical impulses (RALP and LARP). The guide
is there to show you if you are performing the impulses in the correct plane for that protocol.
The correct plane for LARP's The correct plane for RALP's
Figure 4-24 Direction/Plane guide
The last impulse performed is always shown as with the darker black line. If your impulses are in the
correct direction/plane you will see your response occur in the shagged areas. The blue shaded areas are
for the LA or LP and the red shaded areas are for the RA or RP.