Characterization of subclinical tremor in Parkinson's disease
Identifieur interne : 001F06 ( PascalFrancis/Checkpoint ); précédent : 001F05; suivant : 001F07Characterization 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.
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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.
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Blanchet</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Department of Stomatology, Faculty of Dental Medicine, Université de Montréal, and Research Centre, Université de Montréal Hospital Centre (CHUM)</s1><s2>Montréal</s2><s3>CAN</s3><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Asymptomatic</term><term>Laser</term><term>Nervous system diseases</term><term>Parkinson disease</term><term>Tremor</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term><term>Tremblement</term><term>Parkinson maladie</term><term>Asymptomatique</term><term>Laser</term></keywords></textClass></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.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0885-3185</s0></fA01><fA03 i2="1"><s0>Mov. disord.</s0></fA03><fA05><s2>20</s2></fA05><fA06><s2>8</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Characterization of subclinical tremor in Parkinson's disease</s1></fA08><fA11 i1="01" i2="1"><s1>BEUTER (Anne)</s1></fA11><fA11 i1="02" i2="1"><s1>BARBO (Emilie)</s1></fA11><fA11 i1="03" i2="1"><s1>RIGAL (Robert)</s1></fA11><fA11 i1="04" i2="1"><s1>BLANCHET (Pierre J.)</s1></fA11><fA14 i1="01"><s1>Institut de Cognitique, EA 487, Université de Victor Segalen Bordeaux 2</s1><s2>Bordeaux</s2><s3>FRA</s3><sZ>1 aut.</sZ></fA14><fA14 i1="02"><s1>Université du Québec à Montréal, Département de Kinanthropologie et Centre de Neuroscience de la Cognition</s1><s2>Montréal</s2><s3>CAN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></fA14><fA14 i1="03"><s1>Department of Stomatology, Faculty of Dental Medicine, Université de Montréal, and Research Centre, Université de Montréal Hospital Centre (CHUM)</s1><s2>Montréal</s2><s3>CAN</s3><sZ>4 aut.</sZ></fA14><fA20><s1>945-950</s1></fA20><fA21><s1>2005</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>20953</s2><s5>354000132711360050</s5></fA43><fA44><s0>0000</s0><s1>© 2005 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>18 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>05-0443834</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Movement disorders</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>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. 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Blanchet</name><name sortKey="Rigal, Robert" sort="Rigal, Robert" uniqKey="Rigal R" first="Robert" last="Rigal">Robert Rigal</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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