Abstract
[Purpose] To investigate the effect of eye movement on standing postural control. [Subjects and Methods] The subjects were 10 healthy adults. Standing postural sway was measured and compared under four conditions: with a fixed gaze (FG); with the eyes smoothly pursuing a moving target (SP); a simple reaction task in response to an elicited saccadic eye movement (SS); and a choice reaction task in response to an elicited saccadic eye movement (CS). [Result] The CS total sway path length was significantly shorter than that of CS, and the total sway path length and circumferential sway area of SP were significantly larger than those of the other three conditions. [Conclusion] We consider the effect on postural standing sway due to eye movement in movement preparatory processes reflects differences in coordination of eye movement and postural control due to differences in eye movement control rather than the effect of cognitive load.
