Title :

Predictive posture stabilization before contact with moving objects: equivalence of smooth pursuit tracking and peripheral vision

Author(s) :

Rosenquist, Taylor [Auteur]
Pennsylvania State University [Penn State]
Fedorshak, Alyssa [Auteur]
Pennsylvania State University [Penn State]
Kpankpa, John [Auteur]
Pennsylvania State University [Penn State]
Albenze, Eliza [Auteur]
Pennsylvania State University [Penn State]
Bonnet, Cédrick T. [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Bertucco, Matteo [Auteur]
Università degli studi di Verona = University of Verona [UNIVR]
Kurtzer, Isaac [Auteur]
College at Old Westbury [SUNY] [SUNY Old Westbury]
Singh, Tarkeshwar [Auteur]
Pennsylvania State University [Penn State]

Journal title :

Journal of Neurophysiology

Abbreviated title :

Journal of Neurophysiology

Publisher :

American Physiological Society

Publication date :

2024-07-17

ISSN :

0022-3077

HAL domain(s) :

Sciences cognitives

English abstract : [en]

Postural stabilization is essential to effectively interact with our environment. Humans preemptively adjust their posture to counteract impending disturbances, such as those encountered during interactions with moving ...
Show more >Postural stabilization is essential to effectively interact with our environment. Humans preemptively adjust their posture to counteract impending disturbances, such as those encountered during interactions with moving objects, a phenomenon known as anticipatory postural adjustments (APAs). APAs are thought to be influenced by predictive models that incorporate object motion via retinal motion and extra-retinal signals. Building on our previous work that examined APAs in relation to the perceived momentum of moving objects, here we explored the impact of object motion within different visual field sectors on the human capacity to anticipate motion and prepare APAs for contact between virtual moving objects and the limb. Participants interacted with objects moving towards them under different gaze conditions. In one condition, participants fixated on either a central point (central fixation) or left-right of the moving object (peripheral fixation), while in another, they followed the moving object with smooth pursuit eye movements (SPEM). We found that APAs had the smallest magnitude in the central fixation condition and that no notable differences in APAs were apparent between the SPEM and peripheral fixation conditions. This suggests that the visual system can accurately perceive motion of objects in peripheral vision for posture stabilization. Using Bayesian Model Averaging, we also evaluated the contribution of different gaze variables, such as eye velocity and gain (ratio of eye and object velocity) and showed that both eye velocity and gain signals were significant predictors of APAs. Taken together, our study underscores the roles of oculomotor signals in modulation of APAs.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
CHU Lille

Collections :

• Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Research team(s) :

Équipe Action, Vision et Apprentissage (AVA)

Submission date :

2024-07-23T08:48:08Z
2024-08-21T07:29:42Z
2024-08-21T07:59:54Z