Eye-Head Main Sequence in Midsagittal Vertical Plane in Humans
Eye-Head Main Sequence in Midsagittal Vertical Plane in Humans
The vertical gaze displacement has seldom been studied systematically. Also, gaze-orienting movement in the vertical plane to a continuously visible target offset has not been investigated. The main sequence of eye saccade and head movement was studied in three subjects in order to determine the eye and head contributions to gaze in the midsagittal plane under visually guided conditions. The methods conducted were the one with a bite board in a head-fixed condition and the one with a head-free condition. The main finding in these experiments was that the saccade main sequence in the vertical midsagittal plane is asymmetrical for upward and downward saccades, particularly for those larger than 20°.
Keywords: vertical plane, saccade, midsagittal plane, gaze displacement, head movement, eye, head
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