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Results show cerebellar patients cannot adapt EMG activity when damping increases during fast reversal movements.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/a-new-myohaptic-instrument-to-assess-wrist-motion-dynamically/203118/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/a-new-myohaptic-instrument-to-assess-wrist-motion-dynamically/203118.png","ImageObject",300,407,{"name":42,"@type":43},"McQueen","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-08","2026-09-04",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",8,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What problem does the paper address in neurological motion assessment?","Question",{"text":63,"@type":64},"Evaluating joint properties and voluntary motion in neurological patients is challenging, especially because existing tools are limited by lack of standardization and limited clinically relevant information.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How does the proposed myohaptic instrument work?",{"text":68,"@type":64},"It combines electromyographic (EMG) sensors with haptic technology, using a device architecture that includes a drivetrain, haptic controller, and signal acquisition unit to dynamically investigate wrist properties under different damping conditions.",{"name":70,"@type":61,"acceptedAnswer":71},"What main finding involves cerebellar patients?",{"text":72,"@type":64},"Cerebellar patients are unable to adapt EMG activity when damping increases during fast reversal movements, and the instrument enables extraction of an electrophysiological signature of cerebellar deficit.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},203118,1788555793,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,110,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":108,"slug":109},7,40,"healthcare",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":97,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":107,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":80,"read_time":144},5909890329169,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Sensors 2010, 10, 3180-3194; doi:10 .3390/s100403180  \nOPEN ACCESS  \nsensors  \nISSN 1424-8220  \n[www.mdpi.com/journal/sensors](www.mdpi.com/journal/sensors)  \nArticle  \nA New Myohaptic Instrument to Assess Wrist Motion Dynamically  \nMario Manto 1,*, Niels Van Den Braber 2, Giuliana Grimaldi 3 and Piet Lammertse 2  \n1 FNRS, Neurologie ULB-Erasme, 808 Route de Lennik, 1070 Bruxelles, Belgium  \n2 Moog FCS, 2150 Ad Nieuw-Vennep, The Netherlands; [E-Mails: nvandenbraber@moog.com](E-Mails: nvandenbraber@moog.com) (N.V.D.B.); [plammertse@moog.com](plammertse@moog.com) (P.L.)  \n3 Neurologie, ULB Erasme, 808 Route de Lennik, 1070 Bruxelles, Belgium; E-Mail: [giulanagrim@yahoo.it](giulanagrim@yahoo.it) (G.G.)  \n* Author to whom correspondence should be addressed; [E-Mail: mmanto@ulb.ac.be](E-Mail: mmanto@ulb.ac.be) ; Tel.: +32-2-555-39-92; Fax: +32-2-555-39-92 .  \nReceived: 19 January 2010; in revised form: 11 February 2010 / Accepted: 24 March 2010 /  \nPublished: 1 April 2010  \nAbstract: The pathophysiological assessment of joint properties and voluntary motion in neurological patients remains a challenge. This is typically the case in cerebellar patients, who exhibit dysmetric movements due to the dysfunction of cerebellar circuitry. Several tools have been developed, but so far most of these tools have remained confined to laboratories, with a lack of standardization. We report on a new device which combines the use of electromyographic (EMG) sensors with haptic technology for the dynamic investigation of wrist properties. The instrument is composed of a drivetrain, a haptic controller and a signal acquisition unit. Angular accuracy is 0.00611 rad, nominal torque is 6 N·m, maximal rotation velocity is 34.907 rad/sec, with a range of motion of –1.0472 to +1.0472 rad. The inertia of the motor and handgrip is 0.004 kg·m² . This is the first standardized myohaptic instrument allowing the dynamic characterization of wrist properties, including under the condition of artificial damping. We show that cerebellar patients are unable to adapt EMG activities when faced with an increase in damping while performing fast reversal movements. The instrument allows the extraction of an electrophysiological signature of a cerebellar deficit.  \nKeywords: movement; sensor; myohaptic; damping; ataxia  \nSensors 2009, 10 3181  \n1. Introduction  \nFast single-joint monodirectional movements are associated with a triphasic pattern of electromyographic (EMG) activity: a first burst in the agonist muscle (providing the launching torque) is followed by a second burst in the antagonist muscle (providing the braking torque), followed by a second burst in the agonist muscle (to bring the limb accurately to the target) [1,2] . In 1998, Gottlieb described the main kinematic and EMG features of reversal movements in healthy subjects (a reversal movement is a movement towards a fixed target followed immediately by a return to the initial position) . Reversal movements are balanced in shape, and the agonist EMG activity is composed of 2 bursts which are clearly separated [3] . During a fast voluntary movement, muscle damping is typically asymmetrical, predominant in the direction of muscle shortening [4] . For hand kinematics in the physiological range of motion, the damping compensation signal is a crucial element for kinetic encoding by the motor cortex, which generates the corticomotoneuronal discharges towards the end effectors [4] . The structures in the central nervous system (CNS) regulating the damping compensation signal have not been identified so far. Although it is widely accepted that the cerebellum regulates the planning and the execution of voluntary movements [5], the contribution of the cerebellar pathways in the damping compensation signal has remained elusive.  \nCerebellar patients are typically clumsy, performing movements which are dysmetric. Hypermetria (overshoot of the target) is the most common form of dysmetria in cerebellar patients [6] . Hype","cbCaiiEPuTZGlr1S","https://ap.wps.com/l/cbCaiiEPuTZGlr1S","pdf",547148,15,"English","# Introduction\n## Instrumentation and assessment challenges\n## Dysmetria and EMG deficits in cerebellar patients\n## Myohaptic wristalyzer device overview","[{\"question\":\"What problem does the paper address in neurological motion assessment?\",\"answer\":\"Evaluating joint properties and voluntary motion in neurological patients is challenging, especially because existing tools are limited by lack of standardization and limited clinically relevant information.\"},{\"question\":\"How does the proposed myohaptic instrument work?\",\"answer\":\"It combines electromyographic (EMG) sensors with haptic technology, using a device architecture that includes a drivetrain, haptic controller, and signal acquisition unit to dynamically investigate wrist properties under different damping conditions.\"},{\"question\":\"What main finding involves cerebellar patients?\",\"answer\":\"Cerebellar patients are unable to adapt EMG activity when damping increases during fast reversal movements, and the instrument enables extraction of an electrophysiological signature of cerebellar deficit.\"}]","A New Myohaptic Instrument to Assess Wrist Motion Dynamically | PDF",38]