Figure 2
From: Alignment of angular velocity sensors for a vestibular prosthesis
Instrumented test subject. Motion capture markers (white balls) are placed near facial landmarks. The helmet was tightened to avoid shifting relative to the skull. MTx measurement system (orange box) is mounted to helmet as a proxy for artificial vestibular sensors. Wires connecting to MTx are on subject's right. Subject was instructed to bite hard on bar to keep it stable. Bite-bar gyro and wiring on subject's left.