{"id":665191,"date":"2025-04-25T03:42:50","date_gmt":"2025-04-25T00:42:50","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/combining-electrical-and-force-signals-boosts-prosthetic-hand-accuracy\/"},"modified":"2025-04-25T03:42:50","modified_gmt":"2025-04-25T00:42:50","slug":"combining-electrical-and-force-signals-boosts-prosthetic-hand-accuracy","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/combining-electrical-and-force-signals-boosts-prosthetic-hand-accuracy\/","title":{"rendered":"Combining electrical and force signals boosts prosthetic hand accuracy"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2cbb9a180bb\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2cbb9a180bb\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/combining-electrical-and-force-signals-boosts-prosthetic-hand-accuracy\/#Combining_EMG_and_FMG\" >Combining EMG and FMG<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/combining-signals-coul.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/combining-signals-coul.jpg\" data-sub-html=\"Graduate student Peyton Young works with a robotic arm controlled by electromyography (EMG) signals. Young has now developed a technique to use pressure measurements from muscles (force myography, FMG) combined with EMG for better control of prosthetic limbs. Credit: Greg Urquiaga, UC Davis\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/combining-signals-coul.jpg\" alt=\"Combining Signals Could Make for Better Control of Prosthetics\" title=\"Graduate student Peyton Young works with a robotic arm controlled by electromyography (EMG) signals. Young has now developed a technique to use pressure measurements from muscles (force myography, FMG) combined with EMG for better control of prosthetic limbs. Credit: Greg Urquiaga, UC Davis\" width=\"800\" height=\"450\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Graduate student Peyton Young works with a robotic arm controlled by electromyography (EMG) signals. Young has now developed a technique to use pressure measurements from muscles (force myography, FMG) combined with EMG for better control of prosthetic limbs. Credit: Greg Urquiaga, UC Davis<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Combining two different kinds of signals could help engineers build prosthetic limbs that better reproduce natural movements, according to a new study from the University of California, Davis. The work, <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/dx.plos.org\/10.1371\/journal.pone.0321319\" target=\"_blank\">published<\/a> April 10 in <i>PLOS One<\/i>, shows that a combination of electromyography and force myography is more accurate at predicting hand movements than either method by itself.<\/p>\n<p>Hand gestures such as gripping, pinching and grasping are driven by movements of muscles in our forearm. These movements generate small electrical signals that can be read by sensors on the skin, a technique called electromyography.<\/p>\n<p>&#8220;Using sensors and machine learning, we can recognize gestures based on muscle activity,&#8221; said Jonathon Schofield, professor of mechanical and aerospace engineering at UC Davis and senior author on the paper.<\/p>\n<p>EMG-based controls perform well in a lab setting and with limbs at rest. But there is a well-known problem of &#8220;position and load.&#8221; If you move your arm to a different position\u2014say, shoulder height, or over your head\u2014or grasp objects of different weights, the measurements change.<\/p>\n<p>&#8220;In the real world, every time you move a limb and grasp something, the measurement is going to change,&#8221; said graduate student Peyton Young, first author on the paper. &#8220;The neutral position (where the limb is held passively next to the body) is very different to moving around.&#8221;<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/combining-signals-coul-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/combining-signals-coul-1.jpg\" data-sub-html=\"Experimental armband can measure both electrical (top row) and pressure signals from arm muscles. Credit: Peyton Young, UC Davis\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/combining-signals-coul-1.jpg\" alt=\"Combining Signals Could Make for Better Control of Prosthetics\" title=\"Experimental armband can measure both electrical (top row) and pressure signals from arm muscles. Credit: Peyton Young, UC Davis\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                Experimental armband can measure both electrical (top row) and pressure signals from arm muscles. Credit: Peyton Young, UC Davis<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Combining_EMG_and_FMG\"><\/span>Combining EMG and FMG<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To address this, Young and Schofield experimented with a different type of measurement, alone and in combination with EMG. Force myography (FMG) measures how muscles in the arm bulge as they contract.<\/p>\n<p>Young constructed a cuff that goes round the forearm and includes both EMG and FMG sensors. He used this device with a <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/watch-movies-tv-seriess\/\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Watch Movies &amp; TV Series\" target=\"_blank\" rel=\"noopener\">series<\/a> of able-bodied volunteers in the lab who performed a series of arm gestures with it while participants held different loads with different hand grasps. Data from the sensors was fed to a machine-learning algorithm to classify the different movements into pinch, pick, fist and so on. The algorithm was trained on either EMG or FMG signals alone, or on a combination.<\/p>\n<p>                                                                                                        <!-- TechX - News - In-article --><\/p>\n<p>For each experiment, the algorithm was trained on some of the data and scored on its ability to accurately classify the rest.<\/p>\n<p>&#8220;We train the classifier on data from the gestures, then score it on its ability to predict them,&#8221; Young said.<\/p>\n<p>They found that position and loading did indeed affect the accuracy of classification of gestures. Overall, a combination of EMG and FMG gave over 97% classification accuracy, compared to 92% for FMG alone and 83% for EMG alone.<\/p>\n<p>Young is now working on a combined FMG\/EMG sensor and the team is working towards an experimental prosthetic limb that uses the <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a>.<\/p>\n<p>The <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>roach could have a wide range of applications for prosthetics and robotics as well as for virtual reality tools, Schofield said. The team benefits enormously from being able to collaborate with clinical prosthetics experts, surgeons and biologists across UC Davis, he said.<\/p>\n<p>&#8220;We wouldn&#8217;t be able to do it without exposure to actual patients and clinicians,&#8221; Schofield said.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tPeyton R. Young et al, The effects of limb position and grasped load on hand gesture classification using electromyography, force myography, and their combination, <i>PLOS ONE<\/i> (2025). <a rel=\"nofollow\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1371\/journal.pone.0321319\" target=\"_blank\">DOI: 10.1371\/journal.pone.0321319<\/a><\/p>\n<\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n                                                <strong>Citation<\/strong>:<br \/>\n                                                Combining electrical and force signals boosts prosthetic hand accuracy (2025, April 24)<br \/>\n                                                retrieved 24 April 2025<br \/>\n                                                from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2025-04-combining-electrical-boosts-prosthetic-accuracy.html\n                                            <\/p>\n<p>\n                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.\n                                            <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/category\/sciencee\/\" target=\"_blank\" >Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2025-04-combining-electrical-boosts-prosthetic-accuracy.html\" target=\"_blank\" >Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Graduate student Peyton Young works with a robotic arm controlled by electromyography (EMG) signals. Young has now developed a technique to use pressure measurements from muscles (force myography, FMG) combined with EMG for better control of prosthetic limbs. Credit: Greg Urquiaga, UC Davis Combining two different kinds of signals could help engineers build prosthetic limbs&#8230;<\/p>\n","protected":false},"author":1,"featured_media":665192,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/combining-signals-coul.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-665191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/665191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=665191"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/665191\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/665192"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=665191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=665191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=665191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}