Characterizing the nonlinear dynamics of the human postural sway response to visual stimuli
Abstract
This paper introduces a framework to quantify nonlinear postural responses to visual stimuli. Leg splints constrained movement to enforce ankle strategy. Right-eye dominant subjects showed more coherent responses, possibly related to stronger optical flow in the right half of the visual field. To address nonstationarities, we applied inverse Fourier-based detrending, improving model accuracy. Our methodology achieved a novel nonlinear, delayed, second-order low-pass model with high accuracy, distinguishing it from existing models in the literature.
Fields of Study & Subjects
Balance
Gait
and Falls Prevention
Motor Control and Adaptation
Vestibular and auditory disorders
Publication details
- Journal / source
- Journal of Neurophysiology
- Volume
- 135
- Issue
- 2
- Pages
- 509–522
- Publication date
- 16 January 2026
- Language
- EN