Postural Sway and Gaze Can Track the Complex Motion of a Visual Target

摘要: Variability is an inherent and important feature of human movement. This variability has form exhibiting a chaotic structure. Visual feedback training using regular predictive visual target motions does not take into account this essential characteristic the movement, may result in task specific learning loss visuo-motor adaptability. In study, we asked how well healthy young adults can track cues varying degree complexity during whole-body swaying Anterior-Posterior (AP) Medio-Lateral (ML) direction. Participants were to three motions: complex (Lorenz attractor), noise (brown) periodic (sine) moving while receiving online about their performance. Postural sway, gaze motion synchronously recorded force-target gaze-target coupling was quantified spectral coherence Cross-Approximate entropy. Analysis revealed that both sensitive stimuli motions. sway showed higher with Lorenz attractor than brown or sinusoidal stimulus motion. Similarly, more synchronous These results similar regardless whether tracking performed AP ML Based on theoretical model optimal movement signal provide better improve adaptation postural control.