Neuromagnetic fields of the brain evoked by voluntary movement and electrical stimulation of the index finger
Neuromagnetic fields from the left cerebral hemisphere of five healthy, right-handed subjects were investigated under two different experimental conditions: (1) electrical stimulation of the right index finger (task somatosensory evoked fields, task SEF's), and (2) voluntary movement of the sam...
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| Veröffentlicht in: | Brain research 1995-06, Vol.682 (1), p.22-28 |
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| container_title | Brain research |
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| creator | Kristeva-Feige, Rumyana Rossi, Simone Pizzella, Vittorio Tecchio, Franca Romani, Gian Luca Erne, Sergio Edrich, Jochen Orlacchio, Antonio Rossini, Paolo-Maria |
| description | Neuromagnetic fields from the left cerebral hemisphere of five healthy, right-handed subjects were investigated under two different experimental conditions: (1) electrical stimulation of the right index finger (task somatosensory evoked fields,
task SEF's), and (2) voluntary movement of the same finger referred to as movement-related fields, (
MRFs). The two conditions were, performed in random order every 5–8 s. In addition, the
task SEF's were compared to
control SEF's recorded at the beginning of the experiment in order to find the optimal dewar position for localizing the central sulcus. The magnetic signals of the sources corresponding to the main components of the somatosensory evoked fields (early ones at 24 ms and at 34 ms, and late ones after 50 ms) and movement-related fields (motor field, MF and movement-evoked field I—
MEF I) were mapped and localized by means of a moving dipole model. In four out of five subjects the
MEF I dipoles were found to be located deeper than the early
task SEF dipoles. In addition, all of the task SEF's components were found to exhibit larger amplitudes than the control SEF'
s components. The results are discussed in respect to the ability to selectively analyze contributions of mainly proprioceptive (area 3a) and cutaneous (area 3b) areas in the primary somatosensory cortex using magnetoencephalography. An additional finding of the study was that all of the
task SEF's components were found to exhibit larger amplitudes than the
control SEF's components. |
| doi_str_mv | 10.1016/0006-8993(95)00313-F |
| format | Article |
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task SEF's), and (2) voluntary movement of the same finger referred to as movement-related fields, (
MRFs). The two conditions were, performed in random order every 5–8 s. In addition, the
task SEF's were compared to
control SEF's recorded at the beginning of the experiment in order to find the optimal dewar position for localizing the central sulcus. The magnetic signals of the sources corresponding to the main components of the somatosensory evoked fields (early ones at 24 ms and at 34 ms, and late ones after 50 ms) and movement-related fields (motor field, MF and movement-evoked field I—
MEF I) were mapped and localized by means of a moving dipole model. In four out of five subjects the
MEF I dipoles were found to be located deeper than the early
task SEF dipoles. In addition, all of the task SEF's components were found to exhibit larger amplitudes than the control SEF'
s components. The results are discussed in respect to the ability to selectively analyze contributions of mainly proprioceptive (area 3a) and cutaneous (area 3b) areas in the primary somatosensory cortex using magnetoencephalography. An additional finding of the study was that all of the
task SEF's components were found to exhibit larger amplitudes than the
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task SEF's), and (2) voluntary movement of the same finger referred to as movement-related fields, (
MRFs). The two conditions were, performed in random order every 5–8 s. In addition, the
task SEF's were compared to
control SEF's recorded at the beginning of the experiment in order to find the optimal dewar position for localizing the central sulcus. The magnetic signals of the sources corresponding to the main components of the somatosensory evoked fields (early ones at 24 ms and at 34 ms, and late ones after 50 ms) and movement-related fields (motor field, MF and movement-evoked field I—
MEF I) were mapped and localized by means of a moving dipole model. In four out of five subjects the
MEF I dipoles were found to be located deeper than the early
task SEF dipoles. In addition, all of the task SEF's components were found to exhibit larger amplitudes than the control SEF'
s components. The results are discussed in respect to the ability to selectively analyze contributions of mainly proprioceptive (area 3a) and cutaneous (area 3b) areas in the primary somatosensory cortex using magnetoencephalography. An additional finding of the study was that all of the
task SEF's components were found to exhibit larger amplitudes than the
control SEF's components.</description><subject>Adult</subject><subject>Attention - physiology</subject><subject>Biological and medical sciences</subject><subject>Brain - anatomy & histology</subject><subject>Brain - physiology</subject><subject>Electric Stimulation</subject><subject>Electromyography</subject><subject>Evoked Potentials, Somatosensory - physiology</subject><subject>Female</subject><subject>Fingers - innervation</subject><subject>Fingers - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Human</subject><subject>Humans</subject><subject>Magnetic Resonance Imaging</subject><subject>Magnetoencephalography</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration</subject><subject>Motor cortex</subject><subject>Movement - physiology</subject><subject>Movement-related magnetic field</subject><subject>Neuromagnetic source localisation</subject><subject>Somatosensory cortex</subject><subject>Somatosensory evoked field</subject><subject>Space life sciences</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0006-8993</issn><issn>1872-6240</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kMFu3CAQhlHVKN0mfYNW4lBF7cEJGLDNpVIVddtKUXLJHWEYUhIbUsCr5O3Ddrd7DJcRmm9-zXwIfaTknBLaXRBCumaQkn2R4ishjLJm_Qat6NC3Tddy8hatDsg79D7n-_plTJJjdNwL0TLardB8DUuKs74LULzBzsNkM44Olz-Ax6R9wLCJD2Dx-Iw3cVpC0ekZz3EDM4SCdbAYJjAleaMnnIufl0kXH8P_EB8sPNXgcAfpFB05PWX4sK8n6Hb94_byV3N18_P35ferxnDRlkbynlluRic5lVzYXsMoCJWDdq0dBu4kdVZ2o4ahd4RYGChpDaEtH0dW3wk628U-pvh3gVzU7LOBadIB4pJV33eUtWIL8h1oUsw5gVOPyc_1QEWJ2kpWW4Nqa1BJof5JVus69mmfv4wz2MPQ3mrtf973da5WXNLB-HzAmOh4P9CKfdthUFVsPCSVjYdgwPpUjSob_et7vAAfZ5mq</recordid><startdate>19950605</startdate><enddate>19950605</enddate><creator>Kristeva-Feige, Rumyana</creator><creator>Rossi, Simone</creator><creator>Pizzella, Vittorio</creator><creator>Tecchio, Franca</creator><creator>Romani, Gian Luca</creator><creator>Erne, Sergio</creator><creator>Edrich, Jochen</creator><creator>Orlacchio, Antonio</creator><creator>Rossini, Paolo-Maria</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</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>7X8</scope></search><sort><creationdate>19950605</creationdate><title>Neuromagnetic fields of the brain evoked by voluntary movement and electrical stimulation of the index finger</title><author>Kristeva-Feige, Rumyana ; Rossi, Simone ; Pizzella, Vittorio ; Tecchio, Franca ; Romani, Gian Luca ; Erne, Sergio ; Edrich, Jochen ; Orlacchio, Antonio ; Rossini, Paolo-Maria</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c452t-9473d4cbf941945d7aeb50198af2d884f91fd96bae87f00de8102c0124bb3333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>Adult</topic><topic>Attention - physiology</topic><topic>Biological and medical sciences</topic><topic>Brain - anatomy & histology</topic><topic>Brain - physiology</topic><topic>Electric Stimulation</topic><topic>Electromyography</topic><topic>Evoked Potentials, Somatosensory - physiology</topic><topic>Female</topic><topic>Fingers - innervation</topic><topic>Fingers - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Human</topic><topic>Humans</topic><topic>Magnetic Resonance Imaging</topic><topic>Magnetoencephalography</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration</topic><topic>Motor cortex</topic><topic>Movement - physiology</topic><topic>Movement-related magnetic field</topic><topic>Neuromagnetic source localisation</topic><topic>Somatosensory cortex</topic><topic>Somatosensory evoked field</topic><topic>Space life sciences</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kristeva-Feige, Rumyana</creatorcontrib><creatorcontrib>Rossi, Simone</creatorcontrib><creatorcontrib>Pizzella, Vittorio</creatorcontrib><creatorcontrib>Tecchio, Franca</creatorcontrib><creatorcontrib>Romani, Gian Luca</creatorcontrib><creatorcontrib>Erne, Sergio</creatorcontrib><creatorcontrib>Edrich, Jochen</creatorcontrib><creatorcontrib>Orlacchio, Antonio</creatorcontrib><creatorcontrib>Rossini, Paolo-Maria</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Brain research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kristeva-Feige, Rumyana</au><au>Rossi, Simone</au><au>Pizzella, Vittorio</au><au>Tecchio, Franca</au><au>Romani, Gian Luca</au><au>Erne, Sergio</au><au>Edrich, Jochen</au><au>Orlacchio, Antonio</au><au>Rossini, Paolo-Maria</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Neuromagnetic fields of the brain evoked by voluntary movement and electrical stimulation of the index finger</atitle><jtitle>Brain research</jtitle><addtitle>Brain Res</addtitle><date>1995-06-05</date><risdate>1995</risdate><volume>682</volume><issue>1</issue><spage>22</spage><epage>28</epage><pages>22-28</pages><issn>0006-8993</issn><eissn>1872-6240</eissn><coden>BRREAP</coden><abstract>Neuromagnetic fields from the left cerebral hemisphere of five healthy, right-handed subjects were investigated under two different experimental conditions: (1) electrical stimulation of the right index finger (task somatosensory evoked fields,
task SEF's), and (2) voluntary movement of the same finger referred to as movement-related fields, (
MRFs). The two conditions were, performed in random order every 5–8 s. In addition, the
task SEF's were compared to
control SEF's recorded at the beginning of the experiment in order to find the optimal dewar position for localizing the central sulcus. The magnetic signals of the sources corresponding to the main components of the somatosensory evoked fields (early ones at 24 ms and at 34 ms, and late ones after 50 ms) and movement-related fields (motor field, MF and movement-evoked field I—
MEF I) were mapped and localized by means of a moving dipole model. In four out of five subjects the
MEF I dipoles were found to be located deeper than the early
task SEF dipoles. In addition, all of the task SEF's components were found to exhibit larger amplitudes than the control SEF'
s components. The results are discussed in respect to the ability to selectively analyze contributions of mainly proprioceptive (area 3a) and cutaneous (area 3b) areas in the primary somatosensory cortex using magnetoencephalography. An additional finding of the study was that all of the
task SEF's components were found to exhibit larger amplitudes than the
control SEF's components.</abstract><cop>London</cop><cop>Amsterdam</cop><cop>New York, NY</cop><pub>Elsevier B.V</pub><pmid>7552316</pmid><doi>10.1016/0006-8993(95)00313-F</doi><tpages>7</tpages></addata></record> |
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| ispartof | Brain research, 1995-06, Vol.682 (1), p.22-28 |
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| language | eng |
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| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Adult Attention - physiology Biological and medical sciences Brain - anatomy & histology Brain - physiology Electric Stimulation Electromyography Evoked Potentials, Somatosensory - physiology Female Fingers - innervation Fingers - physiology Fundamental and applied biological sciences. Psychology Human Humans Magnetic Resonance Imaging Magnetoencephalography Male Middle Aged Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration Motor cortex Movement - physiology Movement-related magnetic field Neuromagnetic source localisation Somatosensory cortex Somatosensory evoked field Space life sciences Vertebrates: nervous system and sense organs |
| title | Neuromagnetic fields of the brain evoked by voluntary movement and electrical stimulation of the index finger |
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