Symmetric corticospinal excitability and representation of vastus lateralis muscle in right-handed healthy subjects
The purpose of this study was to determine the size and location of the representations of the anterior thigh muscles on the human motor cortex in the dominant and non‐dominant hemispheres. Motor‐evoked potentials (MEPs) induced by transcranial magnetic stimulation were recorded from the right and l...
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| Veröffentlicht in: | Clinical anatomy (New York, N.Y.) N.Y.), 2014-10, Vol.27 (7), p.1053-1057 |
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| creator | Al Sawah, Mohomad Rimawi, Mohammad Concerto, Carmen Amer, Bahaa Cao, Yisheng D'Antoni, Anthony V. Chusid, Eileen Battaglia, Fortunato |
| description | The purpose of this study was to determine the size and location of the representations of the anterior thigh muscles on the human motor cortex in the dominant and non‐dominant hemispheres. Motor‐evoked potentials (MEPs) induced by transcranial magnetic stimulation were recorded from the right and left vastus lateralis (rVL, lVL) muscles. A total of ten right‐handed healthy volunteers participated in the study. In a single session experiment, we investigated VL muscle corticospinal excitability (motor threshold, MEP size, short interval intracortical inhibition, intracortical facilitation) and cortical representation (map area, volume, and location) in the dominant and non‐dominant hemispheres. The motor threshold, MEPs, and intracortical excitability did not differ significantly between the hemispheres (P > 0.05). Furthermore, no difference between sides was found in the location of VL motor representation (mediolateral and anteroposterior axis) or in map area and volume (P > 0.05). Vastus lateralis muscle corticospinal excitability and cortical map were symmetrical in right‐handed subjects. Future studies on patients with unilateral lower extremity injuries could examine side‐to‐side plastic reorganization in corticomotor output and map location in both hemispheres. Clin. Anat. 27:1053–1057, 2014. © 2014 Wiley Periodicals, Inc. |
| doi_str_mv | 10.1002/ca.22438 |
| format | Article |
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Motor‐evoked potentials (MEPs) induced by transcranial magnetic stimulation were recorded from the right and left vastus lateralis (rVL, lVL) muscles. A total of ten right‐handed healthy volunteers participated in the study. In a single session experiment, we investigated VL muscle corticospinal excitability (motor threshold, MEP size, short interval intracortical inhibition, intracortical facilitation) and cortical representation (map area, volume, and location) in the dominant and non‐dominant hemispheres. The motor threshold, MEPs, and intracortical excitability did not differ significantly between the hemispheres (P > 0.05). Furthermore, no difference between sides was found in the location of VL motor representation (mediolateral and anteroposterior axis) or in map area and volume (P > 0.05). Vastus lateralis muscle corticospinal excitability and cortical map were symmetrical in right‐handed subjects. Future studies on patients with unilateral lower extremity injuries could examine side‐to‐side plastic reorganization in corticomotor output and map location in both hemispheres. Clin. 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Anat</addtitle><description>The purpose of this study was to determine the size and location of the representations of the anterior thigh muscles on the human motor cortex in the dominant and non‐dominant hemispheres. Motor‐evoked potentials (MEPs) induced by transcranial magnetic stimulation were recorded from the right and left vastus lateralis (rVL, lVL) muscles. A total of ten right‐handed healthy volunteers participated in the study. In a single session experiment, we investigated VL muscle corticospinal excitability (motor threshold, MEP size, short interval intracortical inhibition, intracortical facilitation) and cortical representation (map area, volume, and location) in the dominant and non‐dominant hemispheres. The motor threshold, MEPs, and intracortical excitability did not differ significantly between the hemispheres (P > 0.05). Furthermore, no difference between sides was found in the location of VL motor representation (mediolateral and anteroposterior axis) or in map area and volume (P > 0.05). Vastus lateralis muscle corticospinal excitability and cortical map were symmetrical in right‐handed subjects. Future studies on patients with unilateral lower extremity injuries could examine side‐to‐side plastic reorganization in corticomotor output and map location in both hemispheres. Clin. Anat. 27:1053–1057, 2014. © 2014 Wiley Periodicals, Inc.</description><subject>Adult</subject><subject>Brain Mapping</subject><subject>cortical representation</subject><subject>Electromyography</subject><subject>Evoked Potentials, Motor - physiology</subject><subject>Female</subject><subject>Functional Laterality - physiology</subject><subject>Healthy Volunteers</subject><subject>hemispheric asymmetry</subject><subject>Humans</subject><subject>Male</subject><subject>Motor Cortex - physiology</subject><subject>Pyramidal Tracts - physiology</subject><subject>Quadriceps Muscle - physiology</subject><subject>TMS</subject><subject>Transcranial Magnetic Stimulation</subject><subject>vastus lateralis</subject><subject>Young Adult</subject><issn>0897-3806</issn><issn>1098-2353</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0V1rFDEUBuAgil2r4C-QgDfeTJuPyddlXWwVSoVa0buQyZ5xs2ZmtklGO__e2XZbRCjenMDhyXtxXoReU3JECWHH3h0xVnP9BC0oMbpiXPCnaEG0URXXRB6gFzlvCKG0Vvo5OmCCSGlqukD5y9R1UFLw2A-pBD_kbehdxHDjQ3FNiKFM2PUrnGCbIENfXAlDj4cW_3K5jBlHVyC5GDLuxuwj4NDjFH6sS7We_8EKr8HFsp5wHpsN-JJfometixle7d9D9PX0w9XyY3X--ezT8uS88sJwXTVtLWvetpwT7yU3LTWgGu2Z8L5mwJVqxG4qSoSoXUOI8UYbvnLM7Bb8EL27y92m4XqEXGwXsocYXQ_DmC2dT2C0Mkr9nwpJKRNSi5m-_YduhjHNJ7tVRBJB2F-BPg05J2jtNoXOpclSYnedWe_sbWczfbMPHJsOVg_wvqQZVHfgd4gwPRpklyf3gXsfcoGbB-_STysVV8J-uziz7y_VqbxaSvud_wE-pq7S</recordid><startdate>201410</startdate><enddate>201410</enddate><creator>Al Sawah, Mohomad</creator><creator>Rimawi, Mohammad</creator><creator>Concerto, Carmen</creator><creator>Amer, Bahaa</creator><creator>Cao, Yisheng</creator><creator>D'Antoni, Anthony V.</creator><creator>Chusid, Eileen</creator><creator>Battaglia, Fortunato</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>7QG</scope><scope>7QP</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TS</scope><scope>H94</scope><scope>JQ2</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>201410</creationdate><title>Symmetric corticospinal excitability and representation of vastus lateralis muscle in right-handed healthy subjects</title><author>Al Sawah, Mohomad ; 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| subjects | Adult Brain Mapping cortical representation Electromyography Evoked Potentials, Motor - physiology Female Functional Laterality - physiology Healthy Volunteers hemispheric asymmetry Humans Male Motor Cortex - physiology Pyramidal Tracts - physiology Quadriceps Muscle - physiology TMS Transcranial Magnetic Stimulation vastus lateralis Young Adult |
| title | Symmetric corticospinal excitability and representation of vastus lateralis muscle in right-handed healthy subjects |
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