Balance Problems

Rotary-chair Testing

During a rotary-chair test, the patient sits in a special chair that moves very slowly in a full circle, the movements precisely controlled by a computer. At faster speeds, it moves back and forth in a very small arc as the chair rotates. The testing room is dark, but a video camera focused on the face and a microphone mounted at the top of the chair lets the patient maintain contact with the person doing the testing. Eye movements are compared with "normal" patient responses.