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8. SUBJECTIVE VERTICAL PERCEPTION TEST

8. SUBJECTIVE VERTICAL PERCEPTION TEST

This test serves to assess how well the otolithic system functions. It consists in asking the patient, in the dark, to place a 60 to 90 cm luminescent bar that is 1 m in front of them and at a 45° tilt, in a position that they believe is vertical. When there is an acute unilateral problem with the otolithic receptors of the inner ear, the patient places the bar in a position that is off-horizontal or off-vertical by around 3 to 15° on the damaged side.

Preparation

Do not wear mascara or eye-liner since these interfere with pupil tracking.

Time taken: 10 minutes.

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