Evaluation method and device for head impulse test

Abstract

An evaluation method for a head impulse test includes a step of extracting subject's eye and head movement data by a video nystagmograph; a step of detecting an eye movement that is not synchronized with a horizontal head movement by a head impulse tester; a step of obtaining corrective saccade data by removing noise from an unsynchronized eye movement signal detected in the head impulse tester by a filter unit; and a step of calculating a ratio of horizontal to vertical angular velocity of corrective saccades as a quantitative index by a control unit. The present invention is dramatically helpful in the diagnosis of central brain lesions by detecting the vertical abnormal trajectory in the central brain lesions. In addition, by calculating quantified data of the vertical abnormal trajectory

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