Risk optimization during ongoing movement: Insights from movement and gaze behavior in throwing DOI Creative Commons
Stephan Zahno, Damian Beck, Ralf Kredel

и другие.

Опубликована: Дек. 16, 2024

ABSTRACT Handling motor noise is fundamental to successful sensorimotor behavior, especially in high-risk situations. Research using finger-pointing tasks shows that humans account for and costs of potential outcomes movement planning. However, does this mechanism generalize more complex tasks? Here, we investigate behavior under risk throwing across three experiments with 20 participants each. Their task was throw balls at a target circle, partially overlapped by penalty circle. This challenged find strategies trade off penalties rewards. In the experiments, magnitude distance between circles were manipulated. We measured location their final gaze fixation before movement—as an indicator planned aiming point—and ball’s impact location. Without penalty, both centered on target. condition, participants’ fixations shifted away from larger shifts higher smaller distances. Interestingly, locations not only (“more conservative”) but also closer statistically optimal (expected gain-maximizing) compared fixated aim points. Movement trajectory analyses show that, conditions, zone increased until phases movement. These results suggest evaluation completed pre-movement planning phase further optimized during execution. NEW & NOTEWORTHY extend study simple movements (Trommershäuser et al., 2008) virtual reality. Our confined cognitive action, system continuously biasing competing action options toward regions expected

Язык: Английский

Markerless Motion Capture to Quantify Functional Performance in Neurodegeneration: Systematic Review DOI Creative Commons
Julian Jeyasingh‐Jacob, Mark Crook‐Rumsey, Harshvi Shah

и другие.

JMIR Aging, Год журнала: 2024, Номер 7, С. e52582 - e52582

Опубликована: Июль 16, 2024

Background Markerless motion capture (MMC) uses video cameras or depth sensors for full body tracking and presents a promising approach objectively unobtrusively monitoring functional performance within community settings, to aid clinical decision-making in neurodegenerative diseases such as dementia. Objective The primary objective of this systematic review was investigate the application MMC using full-body tracking, quantify people with dementia, mild cognitive impairment, Parkinson disease. Methods A search Embase, MEDLINE, CINAHL, Scopus databases conducted between November 2022 February 2023, which yielded total 1595 results. inclusion criteria were tracking. 157 studies included full-text screening, out 26 eligible that met selection review. Results Primarily, selected focused on gait analysis (n=24), while other tasks, sit stand (n=5) stepping place (n=1), also explored. However, activities daily living not evaluated any studies. models varied across studies, encompassing (n=18) versus standard mobile phone (n=2) postprocessing deep learning models. only 6 rigorous comparisons established gold-standard Conclusions Despite its potential an effective tool analyzing movement posture individuals disease, further research is required establish usefulness quantifying mobility real world.

Язык: Английский

Процитировано

2
Risk optimization during ongoing movement: Insights from movement and gaze behavior in throwing DOI Creative Commons
Stephan Zahno, Damian Beck, Ralf Kredel

и другие.

Опубликована: Дек. 16, 2024

ABSTRACT Handling motor noise is fundamental to successful sensorimotor behavior, especially in high-risk situations. Research using finger-pointing tasks shows that humans account for and costs of potential outcomes movement planning. However, does this mechanism generalize more complex tasks? Here, we investigate behavior under risk throwing across three experiments with 20 participants each. Their task was throw balls at a target circle, partially overlapped by penalty circle. This challenged find strategies trade off penalties rewards. In the experiments, magnitude distance between circles were manipulated. We measured location their final gaze fixation before movement—as an indicator planned aiming point—and ball’s impact location. Without penalty, both centered on target. condition, participants’ fixations shifted away from larger shifts higher smaller distances. Interestingly, locations not only (“more conservative”) but also closer statistically optimal (expected gain-maximizing) compared fixated aim points. Movement trajectory analyses show that, conditions, zone increased until phases movement. These results suggest evaluation completed pre-movement planning phase further optimized during execution. NEW & NOTEWORTHY extend study simple movements (Trommershäuser et al., 2008) virtual reality. Our confined cognitive action, system continuously biasing competing action options toward regions expected

Язык: Английский

Процитировано

0