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The amplitude of the vertical saccades of 25 normal adults was studied by electronystagmography or by a computerized eye movement analysis system. A round target 1 cm in diameter moved with a visual angle of 10° or 20° or 30° and with circular movements or with vertical sinusoidal movements or with vertical saccades.<BR>1. The amplitude of the vertical saccades increased as the visual angle widened from 10°to 30° when the target movements were circular.<BR>The amplitude of the verical saccades with vertical sinusoidal target movements or vertical saccadic movements decreased as the visual angle increased to 20°or 30°.<BR>2. The amplitude of vertical eye movements varied most when saccadic target movements were used and was steadiest when the target moved vertically sinusoidally or circularly clockwise.<BR>3. Vertical eye movements movements should be calibrated with a visual angle of 20°or 30°and circular target movements.
一般社団法人日本めまい平衡医学会の論文