VOGによる矢状断面での静的頭部傾斜時の Listing 平面の計測

概要

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The recently developed technique of 3-dimensional infrared video-oculography enabled us to record and reproduce 3-dimensional eye movements in a way that is much less invasive than the search coil system. With this equipment, we could draw Listings plane relative to gravity, which could provide the possibility of evaluating the otolithic function. In this study, the subjects were tilted in the pitch plane, and the change of the orientation of Listings plane was analyzed using 3D video-oculography. Output from our equipment was in terms of Eulers angle coordinates, which required transcription on a rotational axis reference frame for precise presentation of eye movement. Transcription was accomplished by consecutively combining the rotational quaternions describing the 3 components of Eulers angle. We could reconfirm the counterrotation of Listings plane with respect to the head so as to remain more earth-vertical. The minimal invasiveness of this examination would allow us to apply it for clinical evaluation of the patients otolithic function.
日本めまい平衡医学会の論文
2008-08-01