Work

Characterizing the nonlinear dynamics of the human postural sway response to visual stimuli

Year: 2026

Type: article

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.

Source: Journal of Neurophysiology

DOI: 10.1152/jn.00258.2025

Authors: Amir Ghiasi Noughaby, Pouya Amiri, Robert E. Kearney, Abolfazl Mohebbi

Institutions: Polytechnique Montréal, Queen's University, Queens University, McGill University

Language: English

Topic: Balance, Gait, and Falls Prevention

Subfield: Physical Therapy, Sports Therapy and Rehabilitation

Field: Health Professions

Domain: Health Sciences

Open Access status: hybrid

Funders: Natural Sciences and Engineering Research Council of Canada, Institut TransMedTech

Awards: G3430199656, G7088137934