Anticipatory reaching motor behavior characterizes patients within the Alzheimer’s disease continuum in a virtual reality environment

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The paper studied reaching behaviors in a virtual reality environment in people with Alzheimer’s disease (AD), mild cognitive impairment (MCI), and healthy controls, using kinematic recordings to assess task success and the frequency of anticipatory responses, with anticipatory behavior analyzed as a potential marker of AD. The authors found that both AD and MCI groups produced more anticipatory responses than healthy controls, and that higher anticipatory responding was inversely related to success rates and cognitive function; AD patients also had lower success rates and anticipatory responses often skewed toward previous trial targets. The MCI group showed an intermediate pattern with more anticipatory responses than controls while maintaining success rates similar to controls. The paper notes that the results are based on this VR reaching paradigm and presents anticipatory reaching impairments as linked to the cognitive decline continuum, while explicitly positioning the work as a preprint/journal-submission context rather than peer-reviewed findings. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Abstract INTRODUCTION Alzheimer’s Disease (AD) involves progressive declines in cognitive and motor functions, impairing daily activities. This study explored reaching actions in a Virtual Reality (VR) environment in Alzheimer’s Disease (AD) and Mild Cognitive Impairment (MCI) patients to identify motor deficits and their link to cognitive decline. METHODS Kinematic data was recorded, assessing task success rate and frequency of anticipatory responses, focusing on the latter as a potential marker of AD. RESULTS Both AD and MCI patients showed more anticipatory responses than healthy controls (HC), inversely related to success rates and cognitive function. AD patients had lower success rates and increased anticipatory responses, often skewed toward previous trial targets. MCI patients showed an intermediate pattern, with more anticipatory responses than HC but similar success rates. DISCUSSION These results suggest goal-directed reaching impairments in AD, highlighting the importance of combining cognitive and sensorimotor assessments for early detection and potential VR-based motor rehabilitation in the AD continuum.
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Anticipatory reaching motor behavior characterizes patients within the Alzheimer’s disease continuum in a virtual reality environment | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Anticipatory reaching motor behavior characterizes patients within the Alzheimer’s disease continuum in a virtual reality environment Alessia de Nobile, Ilaria Borghi, Paolo De Pasquale, Denise Jennifer Berger, and 11 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5615872/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 09 Apr, 2025 Read the published version in Alzheimer's Research & Therapy → Version 1 posted 7 You are reading this latest preprint version Abstract INTRODUCTION Alzheimer’s Disease (AD) involves progressive declines in cognitive and motor functions, impairing daily activities. This study explored reaching actions in a Virtual Reality (VR) environment in Alzheimer’s Disease (AD) and Mild Cognitive Impairment (MCI) patients to identify motor deficits and their link to cognitive decline. METHODS Kinematic data was recorded, assessing task success rate and frequency of anticipatory responses, focusing on the latter as a potential marker of AD. RESULTS Both AD and MCI patients showed more anticipatory responses than healthy controls (HC), inversely related to success rates and cognitive function. AD patients had lower success rates and increased anticipatory responses, often skewed toward previous trial targets. MCI patients showed an intermediate pattern, with more anticipatory responses than HC but similar success rates. DISCUSSION These results suggest goal-directed reaching impairments in AD, highlighting the importance of combining cognitive and sensorimotor assessments for early detection and potential VR-based motor rehabilitation in the AD continuum. Virtual Reality cognitive deficits Alzheimer kinematic analysis sensorimotor impairments reaching task anticipatory behavior Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 09 Apr, 2025 Read the published version in Alzheimer's Research & Therapy → Version 1 posted Editorial decision: Revision requested 20 Jan, 2025 Reviews received at journal 04 Jan, 2025 Reviewers agreed at journal 19 Dec, 2024 Reviewers invited by journal 19 Dec, 2024 Editor assigned by journal 12 Dec, 2024 Submission checks completed at journal 12 Dec, 2024 First submitted to journal 10 Dec, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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