Characterization of subclinical tremor in Parkinson's disease
Identifieur interne : 000413 ( France/Analysis ); précédent : 000412; suivant : 000414Characterization of subclinical tremor in Parkinson's disease
Auteurs : Anne Beuter [France] ; Emilie Barbo [Canada] ; Robert Rigal [Canada] ; Pierre J. Blanchet [Canada]Source :
- Movement Disorders [ 0885-3185 ] ; 2005-08.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Adult, Aged, Analysis of Variance, Asymptomatic, Case-Control Studies, Demography, Female, Fingers (physiopathology), Humans, Laser, Male, Middle Aged, Nervous system diseases, Parkinson Disease (physiopathology), Parkinson disease, Parkinson's disease, Severity of Illness Index, Tremor, Tremor (etiology), laser, tremor.
- MESH :
- etiology : Tremor.
- physiopathology : Fingers, Parkinson Disease.
- Adult, Aged, Analysis of Variance, Case-Control Studies, Demography, Female, Humans, Male, Middle Aged, Severity of Illness Index.
Abstract
The physiological or pathological nature of subclinical tremor amplitude in Parkinson's disease (PD) is not well established. We analyzed characteristics of resting and postural tremors of subclinical amplitude in 17 patients with idiopathic PD without visible resting tremor, having a postural tremor in their least‐affected hand rated 0 (12 subjects) or 1 (5 subjects) on Item 21 of the Unified Parkinson's Disease Rating Scale, compared to 17 control subjects matched for age, sex, and handedness. Tremor was recorded at the tip of the index finger using a displacement laser transducer. Overall results show that subclinical resting tremor in PD is significantly different from physiological tremor in terms of amplitude fluctuation, frequency dispersion, harmonic index, and proportional power in 4 to 6 Hz. No significant differences were found for postural tremor. These differences appear to originate mainly from patients with the mixed form of the disease. This study also confirms the preservation of physiological tremor likely originating from a distinct central oscillator in PD. The use of this method in the early and detailed characterization of PD tremors when amplitude is still within normal limits is proposed. © 2005 Movement Disorder Society
Url:
- https://api.istex.fr/document/F05BCE95B935FFF301B80AAC4F73AB877A08A803/fulltext/pdf
- https://hal.archives-ouvertes.fr/hal-00401043
DOI: 10.1002/mds.20467
Affiliations:
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ISTEX:F05BCE95B935FFF301B80AAC4F73AB877A08A803Le document en format XML
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Blanchet</name><affiliation wicri:level="3"><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Stomatology, Faculty of Dental Medicine, Université de Montréal and Research Centre, Université de Montréal Hospital Centre (CHUM), Montréal</wicri:regionArea><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="sub">Official Journal of the Movement Disorder Society</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2005-08">2005-08</date><biblScope unit="vol">20</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="945">945</biblScope><biblScope unit="page" to="950">950</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">F05BCE95B935FFF301B80AAC4F73AB877A08A803</idno><idno type="DOI">10.1002/mds.20467</idno><idno type="ArticleID">MDS20467</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Analysis of Variance</term><term>Asymptomatic</term><term>Case-Control Studies</term><term>Demography</term><term>Female</term><term>Fingers (physiopathology)</term><term>Humans</term><term>Laser</term><term>Male</term><term>Middle Aged</term><term>Nervous system diseases</term><term>Parkinson Disease (physiopathology)</term><term>Parkinson disease</term><term>Parkinson's disease</term><term>Severity of Illness Index</term><term>Tremor</term><term>Tremor (etiology)</term><term>laser</term><term>tremor</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Tremor</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Fingers</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Analysis of Variance</term><term>Case-Control Studies</term><term>Demography</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Severity of Illness Index</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Asymptomatique</term><term>Laser</term><term>Parkinson maladie</term><term>Système nerveux pathologie</term><term>Tremblement</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The physiological or pathological nature of subclinical tremor amplitude in Parkinson's disease (PD) is not well established. We analyzed characteristics of resting and postural tremors of subclinical amplitude in 17 patients with idiopathic PD without visible resting tremor, having a postural tremor in their least‐affected hand rated 0 (12 subjects) or 1 (5 subjects) on Item 21 of the Unified Parkinson's Disease Rating Scale, compared to 17 control subjects matched for age, sex, and handedness. Tremor was recorded at the tip of the index finger using a displacement laser transducer. Overall results show that subclinical resting tremor in PD is significantly different from physiological tremor in terms of amplitude fluctuation, frequency dispersion, harmonic index, and proportional power in 4 to 6 Hz. No significant differences were found for postural tremor. These differences appear to originate mainly from patients with the mixed form of the disease. This study also confirms the preservation of physiological tremor likely originating from a distinct central oscillator in PD. The use of this method in the early and detailed characterization of PD tremors when amplitude is still within normal limits is proposed. © 2005 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Canada</li><li>France</li></country><region><li>Québec</li></region><settlement><li>Bordeaux</li><li>Montréal</li></settlement><orgName><li>Université du Québec à Montréal</li></orgName></list><tree><country name="France"><noRegion><name sortKey="Beuter, Anne" sort="Beuter, Anne" uniqKey="Beuter A" first="Anne" last="Beuter">Anne Beuter</name></noRegion></country><country name="Canada"><region name="Québec"><name sortKey="Barbo, Emilie" sort="Barbo, Emilie" uniqKey="Barbo E" first="Emilie" last="Barbo">Emilie Barbo</name></region><name sortKey="Blanchet, Pierre J" sort="Blanchet, Pierre J" uniqKey="Blanchet P" first="Pierre J." last="Blanchet">Pierre J. 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