Corticomuscular coherence is increased in the small postural tremor of Parkinson's disease.
Identifieur interne : 001514 ( Ncbi/Curation ); précédent : 001513; suivant : 001515Corticomuscular coherence is increased in the small postural tremor of Parkinson's disease.
Auteurs : John N. Caviness [États-Unis] ; Holly A. Shill ; Marwan N. Sabbagh ; Virgilio G H. Evidente ; Jose L. Hernandez ; Charles H. AdlerSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2006.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Brain Mapping, Dose-Response Relationship, Radiation, Electric Stimulation (methods), Electroencephalography (methods), Electromyography (methods), Evoked Potentials, Motor (physiology), Evoked Potentials, Motor (radiation effects), Female, Fourier Analysis, Humans, Male, Motor Cortex (physiopathology), Muscle, Skeletal (innervation), Muscle, Skeletal (physiopathology), Parkinson Disease (complications), Posture, Tremor (etiology), Wrist (innervation), Wrist (physiopathology).
- MESH :
- complications : Parkinson Disease.
- etiology : Tremor.
- innervation : Muscle, Skeletal, Wrist.
- methods : Electric Stimulation, Electroencephalography, Electromyography.
- physiology : Evoked Potentials, Motor.
- physiopathology : Motor Cortex, Muscle, Skeletal, Wrist.
- radiation effects : Evoked Potentials, Motor.
- Aged, Aged, 80 and over, Brain Mapping, Dose-Response Relationship, Radiation, Female, Fourier Analysis, Humans, Male, Posture.
Abstract
The mechanisms and electrophysiological characteristics of the postural tremor in Parkinson's disease (PD) have not been defined. We hypothesized that PD subjects with small amplitude postural tremor would show increased corticomuscular coherence at certain frequencies compared to PD subjects without visible tremor. Four groups of participants were studied: (1) Control without postural tremor, (2) Control with small amplitude postural tremor, (3) PD without postural tremor, and (4) PD with small amplitude postural tremor. Accelerometry and electroencephalography-electromyography fast-fourier transform and corticomuscular coherence spectra were generated. Findings showed (1) elevated corticomuscular coherence centered at 12-18 Hz in PD with small amplitude postural tremor; (2) 5-12 Hz accelerometer frequency peaks that did not shift with increasing weight loads in some individuals; and (3) 5-8 Hz accelerometer peaks that shifted frequency with increasing weight loads, consistent with a peripheral-mechanical oscillator in all groups. The small amplitude postural tremor in PD arises from heterogeneous oscillator mechanisms. The discovery of increased corticomuscular coupling shows cortical involvement in the small amplitude postural tremor of PD.
DOI: 10.1002/mds.20743
PubMed: 16250028
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Corticomuscular coherence is increased in the small postural tremor of Parkinson's disease.</title><author><name sortKey="Caviness, John N" sort="Caviness, John N" uniqKey="Caviness J" first="John N" last="Caviness">John N. Caviness</name><affiliation wicri:level="2"><nlm:affiliation>Department of Neurology, Mayo Clinic, Scottsdale, AZ 85259, USA. jcaviness@mayo.edu</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Neurology, Mayo Clinic, Scottsdale, AZ 85259</wicri:regionArea><placeName><region type="state">Arizona</region></placeName></affiliation></author><author><name sortKey="Shill, Holly A" sort="Shill, Holly A" uniqKey="Shill H" first="Holly A" last="Shill">Holly A. Shill</name></author><author><name sortKey="Sabbagh, Marwan N" sort="Sabbagh, Marwan N" uniqKey="Sabbagh M" first="Marwan N" last="Sabbagh">Marwan N. Sabbagh</name></author><author><name sortKey="Evidente, Virgilio G H" sort="Evidente, Virgilio G H" uniqKey="Evidente V" first="Virgilio G H" last="Evidente">Virgilio G H. Evidente</name></author><author><name sortKey="Hernandez, Jose L" sort="Hernandez, Jose L" uniqKey="Hernandez J" first="Jose L" last="Hernandez">Jose L. Hernandez</name></author><author><name sortKey="Adler, Charles H" sort="Adler, Charles H" uniqKey="Adler C" first="Charles H" last="Adler">Charles H. Adler</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2006">2006</date><idno type="doi">10.1002/mds.20743</idno><idno type="RBID">pubmed:16250028</idno><idno type="pmid">16250028</idno><idno type="wicri:Area/PubMed/Corpus">002E15</idno><idno type="wicri:Area/PubMed/Curation">002E15</idno><idno type="wicri:Area/PubMed/Checkpoint">002D96</idno><idno type="wicri:Area/Ncbi/Merge">001514</idno><idno type="wicri:Area/Ncbi/Curation">001514</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Corticomuscular coherence is increased in the small postural tremor of Parkinson's disease.</title><author><name sortKey="Caviness, John N" sort="Caviness, John N" uniqKey="Caviness J" first="John N" last="Caviness">John N. Caviness</name><affiliation wicri:level="2"><nlm:affiliation>Department of Neurology, Mayo Clinic, Scottsdale, AZ 85259, USA. jcaviness@mayo.edu</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Neurology, Mayo Clinic, Scottsdale, AZ 85259</wicri:regionArea><placeName><region type="state">Arizona</region></placeName></affiliation></author><author><name sortKey="Shill, Holly A" sort="Shill, Holly A" uniqKey="Shill H" first="Holly A" last="Shill">Holly A. Shill</name></author><author><name sortKey="Sabbagh, Marwan N" sort="Sabbagh, Marwan N" uniqKey="Sabbagh M" first="Marwan N" last="Sabbagh">Marwan N. Sabbagh</name></author><author><name sortKey="Evidente, Virgilio G H" sort="Evidente, Virgilio G H" uniqKey="Evidente V" first="Virgilio G H" last="Evidente">Virgilio G H. Evidente</name></author><author><name sortKey="Hernandez, Jose L" sort="Hernandez, Jose L" uniqKey="Hernandez J" first="Jose L" last="Hernandez">Jose L. Hernandez</name></author><author><name sortKey="Adler, Charles H" sort="Adler, Charles H" uniqKey="Adler C" first="Charles H" last="Adler">Charles H. Adler</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2006" type="published">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Brain Mapping</term><term>Dose-Response Relationship, Radiation</term><term>Electric Stimulation (methods)</term><term>Electroencephalography (methods)</term><term>Electromyography (methods)</term><term>Evoked Potentials, Motor (physiology)</term><term>Evoked Potentials, Motor (radiation effects)</term><term>Female</term><term>Fourier Analysis</term><term>Humans</term><term>Male</term><term>Motor Cortex (physiopathology)</term><term>Muscle, Skeletal (innervation)</term><term>Muscle, Skeletal (physiopathology)</term><term>Parkinson Disease (complications)</term><term>Posture</term><term>Tremor (etiology)</term><term>Wrist (innervation)</term><term>Wrist (physiopathology)</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Tremor</term></keywords><keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Muscle, Skeletal</term><term>Wrist</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Electric Stimulation</term><term>Electroencephalography</term><term>Electromyography</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Evoked Potentials, Motor</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Motor Cortex</term><term>Muscle, Skeletal</term><term>Wrist</term></keywords><keywords scheme="MESH" qualifier="radiation effects" xml:lang="en"><term>Evoked Potentials, Motor</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Brain Mapping</term><term>Dose-Response Relationship, Radiation</term><term>Female</term><term>Fourier Analysis</term><term>Humans</term><term>Male</term><term>Posture</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The mechanisms and electrophysiological characteristics of the postural tremor in Parkinson's disease (PD) have not been defined. We hypothesized that PD subjects with small amplitude postural tremor would show increased corticomuscular coherence at certain frequencies compared to PD subjects without visible tremor. Four groups of participants were studied: (1) Control without postural tremor, (2) Control with small amplitude postural tremor, (3) PD without postural tremor, and (4) PD with small amplitude postural tremor. Accelerometry and electroencephalography-electromyography fast-fourier transform and corticomuscular coherence spectra were generated. Findings showed (1) elevated corticomuscular coherence centered at 12-18 Hz in PD with small amplitude postural tremor; (2) 5-12 Hz accelerometer frequency peaks that did not shift with increasing weight loads in some individuals; and (3) 5-8 Hz accelerometer peaks that shifted frequency with increasing weight loads, consistent with a peripheral-mechanical oscillator in all groups. The small amplitude postural tremor in PD arises from heterogeneous oscillator mechanisms. The discovery of increased corticomuscular coupling shows cortical involvement in the small amplitude postural tremor of PD.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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