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We study the heartbeat activity of healthy individuals at rest and during exercise. We focus on correlation properties of the intervals formed by successive peaks in the pulse wave and find significant scaling differences between rest and…

Statistical Mechanics · Physics 2009-11-07 Roman Karasik , Nir Sapir , Yosef Ashkenazy , Plamen Ch. Ivanov , Itzhak Dvir , Peretz Lavie , Shlomo Havlin

Gait analysis using computer vision is an emerging field in AI, offering clinicians an objective, multi-feature approach to analyse complex movements. Despite its promise, current applications using RGB video data alone are limited in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Rahm Ranjan , David Ahmedt-Aristizabal , Mohammad Ali Armin , Juno Kim

Due to hemiparesis, stroke survivors frequently develop a dysfunctional gait that is often characterized by an overall decrease in walking speed and a unilateral decrease in step length. With millions currently affected by this…

Robotics · Computer Science 2025-12-04 Vaughn Chambers , Panagiotis Artemiadis

Human beings can utilize multiple balance strategies, e.g. step location adjustment and angular momentum adaptation, to maintain balance when walking under dynamic disturbances. In this work, we propose a novel Nonlinear Model Predictive…

Robotics · Computer Science 2025-03-21 Jiatao Ding , Chengxu Zhou , Songyan Xin , Xiaohui Xiao , Nikos Tsagarakis

Learning a locomotion controller for a musculoskeletal system is challenging due to over-actuation and high-dimensional action space. While many reinforcement learning methods attempt to address this issue, they often struggle to learn…

Robotics · Computer Science 2024-07-17 Henri-Jacques Geiß , Firas Al-Hafez , Andre Seyfarth , Jan Peters , Davide Tateo

In many physical, social or economical phenomena we observe changes of a studied quantity only in discrete, irregularly distributed points in time. The stochastic process used by physicists to describe this kind of variables is the…

Statistical Finance · Quantitative Finance 2020-04-14 Jarosław Klamut , Tomasz Gubiec

Differences in gait patterns of children with Duchenne muscular dystrophy (DMD) and typically-developing (TD) peers are visible to the eye, but quantifications of those differences outside of the gait laboratory have been elusive. In this…

Driving simulators are increasingly used in research and development. However, simulators often cause motion sickness due to downscaled motion and unscaled veridical visuals. In this paper, a motion cueing algorithm is proposed that reduces…

Robotics · Computer Science 2025-10-29 Varun Kotian , Riender Happee , Barys Shyrokau

This work offers a design of a video surveillance system based on a soft biometric -- gait identification from MoCap data. The main focus is on two substantial issues of the video surveillance scenario: (1) the walkers do not cooperate in…

Computer Vision and Pattern Recognition · Computer Science 2022-12-09 Michal Balazia , Petr Sojka

One approach to analyzing the dynamics of a physical system is to search for long-lived patterns in its motions. This approach has been particularly successful for molecular dynamics data, where slowly decorrelating patterns can indicate…

Data Analysis, Statistics and Probability · Physics 2023-10-03 Chatipat Lorpaiboon , Erik Henning Thiede , Robert J. Webber , Jonathan Weare , Aaron R. Dinner

We study the correlations between redirected walking (RDW) rotation gains and patterns in users' posture and gaze data during locomotion in virtual reality (VR). To do this, we conducted a psychophysical experiment to measure users'…

Human-Computer Interaction · Computer Science 2025-03-27 Niall L. Williams , Logan C. Stevens , Aniket Bera , Dinesh Manocha

Human identification plays a prominent role in terms of security. In modern times security is becoming the key term for an individual or a country, especially for countries which are facing internal or external threats. Gait analysis is…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Ravi Shekhar Tiwari , Supraja P , Rijo Jackson Tom

Reduced-order-model-based optimal control techniques for humanoid locomotion struggle to adapt step duration and placement simultaneously in dynamic walking gaits due to their reliance on fixed-time discretization, which limits…

Robotics · Computer Science 2025-05-29 Junheng Li , Ziwei Duan , Junchao Ma , Quan Nguyen

In 2014, more than 10 million people in the US were affected by an ambulatory disability. Thus, gait rehabilitation is a crucial part of health care systems. The quantification of human locomotion enables clinicians to describe and analyze…

Human-Computer Interaction · Computer Science 2019-05-27 Markus Wagner , Djordje Slijepcevic , Brian Horsak , Alexander Rind , Matthias Zeppelzauer , Wolfgang Aigner

Human walkers traverse diverse environments and demonstrate different gait locomotion and energy cost on granular terrains compared to solid ground. We present a stiffness-based model predictive control approach of knee exoskeleton…

Robotics · Computer Science 2025-02-18 Chunchu Zhu , Xunjie Chen , Jingang Yi

It is already known that both auditory and visual stimulus is able to convey emotions in human mind to different extent. The strength or intensity of the emotional arousal vary depending on the type of stimulus chosen. In this study, we try…

Physical activity is recognized as an essential component of overall health. One measure of physical activity, the step count, is well known as a predictor of long-term morbidity and mortality. Step Counting (SC) is the automated counting…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Shehroz S. Khan , Ali Abedi

We focus on various measures of the fluctuations of the sequence of intervals between beats of the human heart, and how such fluctuations can be used to assess the presence or likelihood of cardiovascular disease. We examine sixteen such…

Biological Physics · Physics 2016-09-08 Malvin C. Teich , Steven B. Lowen , Bradley M. Jost , Karin Vibe-Rheymer , Conor Heneghan

While virtual reality (VR) holds significant potential to revolutionize digital user interaction, how visual information is presented through VR head-mounted displays (HMDs) differs from naturalistic viewing and interactions in physical…

Human-Computer Interaction · Computer Science 2026-02-11 Xiaoye Michael Wang , Matthew Prenevost , Aneesh Tarun , Ian Robinson , Michael Nitsche , Gabby Resch , Ali Mazalek , Timothy N. Welsh

Abnormal gait, its associated falls and complications have high patient morbidity, mortality. Computer vision detects, predicts patient gait abnormalities, assesses fall risk and serves as clinical decision support tool for physicians. This…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Jasmin Hundall , Benson A. Babu