Comparison between saccades to 8° target steps and those to 10° target steps. a, Relationship between the direction of the endpoint shift for saccades to 8° target steps (ordinate) and that for saccades to 10° target steps (abscissa), shown separately for left SC and right SC stimulation. The regression line formula is y = 0.92x – 0.59, p for trend <0.0001 for left SC stimulation, and y = 1.11x – 0.37, p for trend <0.0001 for right SC stimulation (simple linear regression). b, Relationship between the size of the endpoint shift for saccades to 8° target steps (ordinate) and that for saccades to 10° target steps (abscissa). The regression line formula is y = 0.85x – 0.06, p for trend <0.0001 (simple linear regression). Rt, Rightward; Lt, leftward.