Utility of multi-channel surface electromyography in assessment of focal hand dystonia
ABSTRACT Introduction Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD). Methods Sixteen‐channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of m...
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| Veröffentlicht in: | Muscle & nerve 2013-09, Vol.48 (3), p.415-422 |
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| creator | Sivadasan, Ajith Sanjay, M. Alexander, Mathew Devasahayam, Suresh R. Srinivasa, Babu K. |
| description | ABSTRACT
Introduction
Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD).
Methods
Sixteen‐channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of muscle contractions in FHD compared with normal controls. Customized software was developed to acquire and analyze EMG signals.
Results
SEMG of FHD subjects (20) showed “early onset” during motor imagery, rapid proximal muscle recruitment, agonist‐antagonist co‐contraction involving proximal muscle groups, “delayed offset” after stopping writing, higher rectified mean amplitudes, and mirror activity in contralateral limb compared with controls (16). Muscle activation latencies were heterogenous in FHD.
Conclusions
Anticipation, delayed relaxation, and mirror EMG activation were noted in FHD. A clear pattern of muscle activation cannot be ascertained. Multi‐channel SEMG can aid in objective assessment of temporal‐spatial distribution of activity and can refine targeted therapies like chemodenervation and biofeedback. Muscle Nerve 48: 415–422, 2013 |
| doi_str_mv | 10.1002/mus.23762 |
| format | Article |
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Introduction
Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD).
Methods
Sixteen‐channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of muscle contractions in FHD compared with normal controls. Customized software was developed to acquire and analyze EMG signals.
Results
SEMG of FHD subjects (20) showed “early onset” during motor imagery, rapid proximal muscle recruitment, agonist‐antagonist co‐contraction involving proximal muscle groups, “delayed offset” after stopping writing, higher rectified mean amplitudes, and mirror activity in contralateral limb compared with controls (16). Muscle activation latencies were heterogenous in FHD.
Conclusions
Anticipation, delayed relaxation, and mirror EMG activation were noted in FHD. A clear pattern of muscle activation cannot be ascertained. Multi‐channel SEMG can aid in objective assessment of temporal‐spatial distribution of activity and can refine targeted therapies like chemodenervation and biofeedback. Muscle Nerve 48: 415–422, 2013</description><identifier>ISSN: 0148-639X</identifier><identifier>EISSN: 1097-4598</identifier><identifier>DOI: 10.1002/mus.23762</identifier><identifier>PMID: 23861190</identifier><identifier>CODEN: MUNEDE</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Adult ; Biofeedback, Psychology ; Case-Control Studies ; delayed offset ; Disability Evaluation ; Dystonic Disorders - pathology ; Dystonic Disorders - rehabilitation ; early onset ; Electric Stimulation ; Electromyography ; Female ; focal hand dystonia (FHD) ; Functional Laterality ; Hand - physiopathology ; Humans ; Imagery (Psychotherapy) - methods ; Male ; Middle Aged ; mirror activity ; Motor ability ; Muscle Contraction ; Muscle, Skeletal - physiopathology ; Muscular system ; Observation ; surface electromyogram (SEMG) ; Time Factors ; Writing ; Young Adult</subject><ispartof>Muscle & nerve, 2013-09, Vol.48 (3), p.415-422</ispartof><rights>Copyright © 2013 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3912-da24ae1997ce35ad64f37a253f008a65b80995721e7c1a2cbdf5b3f8fb1950673</citedby><cites>FETCH-LOGICAL-c3912-da24ae1997ce35ad64f37a253f008a65b80995721e7c1a2cbdf5b3f8fb1950673</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmus.23762$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmus.23762$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23861190$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sivadasan, Ajith</creatorcontrib><creatorcontrib>Sanjay, M.</creatorcontrib><creatorcontrib>Alexander, Mathew</creatorcontrib><creatorcontrib>Devasahayam, Suresh R.</creatorcontrib><creatorcontrib>Srinivasa, Babu K.</creatorcontrib><title>Utility of multi-channel surface electromyography in assessment of focal hand dystonia</title><title>Muscle & nerve</title><addtitle>Muscle Nerve</addtitle><description>ABSTRACT
Introduction
Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD).
Methods
Sixteen‐channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of muscle contractions in FHD compared with normal controls. Customized software was developed to acquire and analyze EMG signals.
Results
SEMG of FHD subjects (20) showed “early onset” during motor imagery, rapid proximal muscle recruitment, agonist‐antagonist co‐contraction involving proximal muscle groups, “delayed offset” after stopping writing, higher rectified mean amplitudes, and mirror activity in contralateral limb compared with controls (16). Muscle activation latencies were heterogenous in FHD.
Conclusions
Anticipation, delayed relaxation, and mirror EMG activation were noted in FHD. A clear pattern of muscle activation cannot be ascertained. Multi‐channel SEMG can aid in objective assessment of temporal‐spatial distribution of activity and can refine targeted therapies like chemodenervation and biofeedback. Muscle Nerve 48: 415–422, 2013</description><subject>Adult</subject><subject>Biofeedback, Psychology</subject><subject>Case-Control Studies</subject><subject>delayed offset</subject><subject>Disability Evaluation</subject><subject>Dystonic Disorders - pathology</subject><subject>Dystonic Disorders - rehabilitation</subject><subject>early onset</subject><subject>Electric Stimulation</subject><subject>Electromyography</subject><subject>Female</subject><subject>focal hand dystonia (FHD)</subject><subject>Functional Laterality</subject><subject>Hand - physiopathology</subject><subject>Humans</subject><subject>Imagery (Psychotherapy) - methods</subject><subject>Male</subject><subject>Middle Aged</subject><subject>mirror activity</subject><subject>Motor ability</subject><subject>Muscle Contraction</subject><subject>Muscle, Skeletal - physiopathology</subject><subject>Muscular system</subject><subject>Observation</subject><subject>surface electromyogram (SEMG)</subject><subject>Time Factors</subject><subject>Writing</subject><subject>Young Adult</subject><issn>0148-639X</issn><issn>1097-4598</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kE1PFTEYRhuigSu64A-QSdzoYqCf0-mSEEEN4EKvsms6nbdQ6Eyv7Ux0_r3FCyxMXHVzzsnbB6EDgo8IxvR4mPMRZbKhO2hFsJI1F6p9gVaY8LZumLreQ69yvsMYk7aRu2iPsrYhROEV-r6efPDTUkVXDXOYfG1vzThCqPKcnLFQQQA7pTgs8SaZze1S-bEyOUPOA4zTg-eiNaEqWl_1S57i6M1r9NKZkOHN47uP1mcfvp1-rC--nH86PbmoLVOE1r2h3ABRSlpgwvQNd0waKpjDuDWN6FqslJCUgLTEUNv1TnTMta4jSuBGsn30btvdpPhzhjzpwWcLIZgR4pw14YzRhpdIQd_-g97FOY3lukJxJoggihbq_ZayKeacwOlN8oNJiyZYP4yty9j679iFPXwszt0A_TP5tG4BjrfALx9g-X9JX66_PiXrreHzBL-fDZPudfmtFPrH1bnmV59beXnGNWZ_APeXl-Q</recordid><startdate>201309</startdate><enddate>201309</enddate><creator>Sivadasan, Ajith</creator><creator>Sanjay, M.</creator><creator>Alexander, Mathew</creator><creator>Devasahayam, Suresh R.</creator><creator>Srinivasa, Babu K.</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TS</scope><scope>7U7</scope><scope>7U9</scope><scope>C1K</scope><scope>H94</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7X8</scope></search><sort><creationdate>201309</creationdate><title>Utility of multi-channel surface electromyography in assessment of focal hand dystonia</title><author>Sivadasan, Ajith ; Sanjay, M. ; Alexander, Mathew ; Devasahayam, Suresh R. ; Srinivasa, Babu K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3912-da24ae1997ce35ad64f37a253f008a65b80995721e7c1a2cbdf5b3f8fb1950673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Adult</topic><topic>Biofeedback, Psychology</topic><topic>Case-Control Studies</topic><topic>delayed offset</topic><topic>Disability Evaluation</topic><topic>Dystonic Disorders - pathology</topic><topic>Dystonic Disorders - rehabilitation</topic><topic>early onset</topic><topic>Electric Stimulation</topic><topic>Electromyography</topic><topic>Female</topic><topic>focal hand dystonia (FHD)</topic><topic>Functional Laterality</topic><topic>Hand - physiopathology</topic><topic>Humans</topic><topic>Imagery (Psychotherapy) - methods</topic><topic>Male</topic><topic>Middle Aged</topic><topic>mirror activity</topic><topic>Motor ability</topic><topic>Muscle Contraction</topic><topic>Muscle, Skeletal - physiopathology</topic><topic>Muscular system</topic><topic>Observation</topic><topic>surface electromyogram (SEMG)</topic><topic>Time Factors</topic><topic>Writing</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sivadasan, Ajith</creatorcontrib><creatorcontrib>Sanjay, M.</creatorcontrib><creatorcontrib>Alexander, Mathew</creatorcontrib><creatorcontrib>Devasahayam, Suresh R.</creatorcontrib><creatorcontrib>Srinivasa, Babu K.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Immunology Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Physical Education Index</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><jtitle>Muscle & nerve</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sivadasan, Ajith</au><au>Sanjay, M.</au><au>Alexander, Mathew</au><au>Devasahayam, Suresh R.</au><au>Srinivasa, Babu K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Utility of multi-channel surface electromyography in assessment of focal hand dystonia</atitle><jtitle>Muscle & nerve</jtitle><addtitle>Muscle Nerve</addtitle><date>2013-09</date><risdate>2013</risdate><volume>48</volume><issue>3</issue><spage>415</spage><epage>422</epage><pages>415-422</pages><issn>0148-639X</issn><eissn>1097-4598</eissn><coden>MUNEDE</coden><abstract>ABSTRACT
Introduction
Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD).
Methods
Sixteen‐channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of muscle contractions in FHD compared with normal controls. Customized software was developed to acquire and analyze EMG signals.
Results
SEMG of FHD subjects (20) showed “early onset” during motor imagery, rapid proximal muscle recruitment, agonist‐antagonist co‐contraction involving proximal muscle groups, “delayed offset” after stopping writing, higher rectified mean amplitudes, and mirror activity in contralateral limb compared with controls (16). Muscle activation latencies were heterogenous in FHD.
Conclusions
Anticipation, delayed relaxation, and mirror EMG activation were noted in FHD. A clear pattern of muscle activation cannot be ascertained. Multi‐channel SEMG can aid in objective assessment of temporal‐spatial distribution of activity and can refine targeted therapies like chemodenervation and biofeedback. Muscle Nerve 48: 415–422, 2013</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>23861190</pmid><doi>10.1002/mus.23762</doi><tpages>8</tpages></addata></record> |
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| subjects | Adult Biofeedback, Psychology Case-Control Studies delayed offset Disability Evaluation Dystonic Disorders - pathology Dystonic Disorders - rehabilitation early onset Electric Stimulation Electromyography Female focal hand dystonia (FHD) Functional Laterality Hand - physiopathology Humans Imagery (Psychotherapy) - methods Male Middle Aged mirror activity Motor ability Muscle Contraction Muscle, Skeletal - physiopathology Muscular system Observation surface electromyogram (SEMG) Time Factors Writing Young Adult |
| title | Utility of multi-channel surface electromyography in assessment of focal hand dystonia |
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