Smooth pursuit examination using a random sinusoidal wave.

概要

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To examine the predictive function of smooth pursuit. the authors developed a new target wave, the random sinusoidal wave. The random sinusoidal wave consists of 40 half sinusoidal waves with 5 degress of amplitude and is divided into two sections, the predictive section and the nonpredictive section. The predictive section contains the usual sinusoidal waves. However, the direction of the sinusoidal wave proceeds to the unusual (opposite) side in the nonpredictive section. Eve movements were recorded twice (in the first examination and the second examination) with the random sinusoidal wave. The test was evaluated in 23 healthy subjects. Five parameters in each of the two sections were calculated quantitatively with a microcomputer and the results of the first and second examinations were compared. There were no differences between the five parameters in the first and second examination in either the predictive or the nonpredictive sections. These results confirm the reproductability of the smooth pursuit examination with this target wave.
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