MovDisordV3, PascalFrancis, Corpus, bibRecord, 001476

Dual Task Interference in Psychogenic Tremor

Identifieur interne : 001476 ( PascalFrancis/Corpus ); précédent : 001475; suivant : 001477

Dual Task Interference in Psychogenic Tremor

Auteurs : Hatice Kumru ; Maaike Begeman ; Eduardo Tolosa ; Josep Valls-Sole

Source :

Movement disorders [ 0885-3185 ] ; 2007.

RBID : Pascal:08-0069699

Descripteurs français

Pascal (Inist)
- Pathologie du système nerveux, Tremblement, Maladie de Parkinson, Interférence, Psychogène, Temps réaction.

English descriptors

KwdEn :
- Interference, Nervous system diseases, Parkinson disease, Psychogenic, Reaction time, Tremor.

Abstract

Psychogenic tremor (PT) is visually indistinguishable from voluntarily mimicked tremor. Healthy volunteers have difficulties with carrying out simultaneously two tasks due to the phenomenon known as dual task interference. Therefore, performing voluntary rhythmic movements would be a burden for carrying out fast ballistic movements with the contralateral hand. We hypothesized that, similarly to healthy volunteers performing rhythmic movements, patients with PT should show the effects of dual task interference, and this may distinguish them from patients with other types of tremor. We studied 6 patients with PT, 9 with Parkinson's disease (PD) and predominantly unilateral tremor, 11 with essential tremor (ET), and 10 normal volunteers (NV) mimicking tremor. They were requested to perform a unilateral simple reaction time task (SRT) to a visual imperative signal in two different conditions: at rest (rSRT) and during contralateral hand tremor (tSRT). Reaction time was significantly longer in tSRT than in rSRT in PT and in NV groups (P < 0.01 for both groups). However, no significant differences were observed between rSRT and tSRT in PD and ET. The delay of unilateral tSRT with respect to rSRT suggests an effect of tremorlike oscillatory movements on reaction time that is consistent with the concept of dual-task interference in NV or PT patients but not in PD or ET. These observations may be useful in the evaluation of psychogenic movement disorders.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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Format Inist (serveur)

NO :	PASCAL 08-0069699 INIST
ET :	Dual Task Interference in Psychogenic Tremor
AU :	KUMRU (Hatice); BEGEMAN (Maaike); TOLOSA (Eduardo); VALLS-SOLE (Josep)
AF :	Institute Guttmann, Badalona/Barcelona/Espagne (1 aut.); Unitat d'EMG, Servei de Neurologia, Hospital Clinic, Centro de Investigación Biomédica August Pi i Sunyer (IDIBAPS), Facultad de Medicina, Universitat de Barcelona/Barcelona/Espagne (1 aut., 2 aut., 3 aut., 4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 14; Pp. 2077-2082; Bibl. 24 ref.
LA :	Anglais
EA :	Psychogenic tremor (PT) is visually indistinguishable from voluntarily mimicked tremor. Healthy volunteers have difficulties with carrying out simultaneously two tasks due to the phenomenon known as dual task interference. Therefore, performing voluntary rhythmic movements would be a burden for carrying out fast ballistic movements with the contralateral hand. We hypothesized that, similarly to healthy volunteers performing rhythmic movements, patients with PT should show the effects of dual task interference, and this may distinguish them from patients with other types of tremor. We studied 6 patients with PT, 9 with Parkinson's disease (PD) and predominantly unilateral tremor, 11 with essential tremor (ET), and 10 normal volunteers (NV) mimicking tremor. They were requested to perform a unilateral simple reaction time task (SRT) to a visual imperative signal in two different conditions: at rest (rSRT) and during contralateral hand tremor (tSRT). Reaction time was significantly longer in tSRT than in rSRT in PT and in NV groups (P < 0.01 for both groups). However, no significant differences were observed between rSRT and tSRT in PD and ET. The delay of unilateral tSRT with respect to rSRT suggests an effect of tremorlike oscillatory movements on reaction time that is consistent with the concept of dual-task interference in NV or PT patients but not in PD or ET. These observations may be useful in the evaluation of psychogenic movement disorders.
CC :	002B17; 002B17A01; 002B02B11
FD :	Pathologie du système nerveux; Tremblement; Maladie de Parkinson; Interférence; Psychogène; Temps réaction
FG :	Mouvement involontaire; Trouble neurologique; Pathologie de l'encéphale; Syndrome extrapyramidal; Maladie dégénérative; Pathologie du système nerveux central
ED :	Nervous system diseases; Tremor; Parkinson disease; Interference; Psychogenic; Reaction time
EG :	Involuntary movement; Neurological disorder; Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease
SD :	Sistema nervioso patología; Temblor; Parkinson enfermedad; Interferencia; Psicógeno; Tiempo reacción
LO :	INIST-20953.354000174393170100
ID :	08-0069699

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Pascal:08-0069699

Le document en format XML

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<front><div type="abstract" xml:lang="en">Psychogenic tremor (PT) is visually indistinguishable from voluntarily mimicked tremor. Healthy volunteers have difficulties with carrying out simultaneously two tasks due to the phenomenon known as dual task interference. Therefore, performing voluntary rhythmic movements would be a burden for carrying out fast ballistic movements with the contralateral hand. We hypothesized that, similarly to healthy volunteers performing rhythmic movements, patients with PT should show the effects of dual task interference, and this may distinguish them from patients with other types of tremor. We studied 6 patients with PT, 9 with Parkinson's disease (PD) and predominantly unilateral tremor, 11 with essential tremor (ET), and 10 normal volunteers (NV) mimicking tremor. They were requested to perform a unilateral simple reaction time task (SRT) to a visual imperative signal in two different conditions: at rest (rSRT) and during contralateral hand tremor (tSRT). Reaction time was significantly longer in tSRT than in rSRT in PT and in NV groups (P < 0.01 for both groups). However, no significant differences were observed between rSRT and tSRT in PD and ET. The delay of unilateral tSRT with respect to rSRT suggests an effect of tremorlike oscillatory movements on reaction time that is consistent with the concept of dual-task interference in NV or PT patients but not in PD or ET. These observations may be useful in the evaluation of psychogenic movement disorders.</div>
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<server><NO>PASCAL 08-0069699 INIST</NO>
<ET>Dual Task Interference in Psychogenic Tremor</ET>
<AU>KUMRU (Hatice); BEGEMAN (Maaike); TOLOSA (Eduardo); VALLS-SOLE (Josep)</AU>
<AF>Institute Guttmann, Badalona/Barcelona/Espagne (1 aut.); Unitat d'EMG, Servei de Neurologia, Hospital Clinic, Centro de Investigación Biomédica August Pi i Sunyer (IDIBAPS), Facultad de Medicina, Universitat de Barcelona/Barcelona/Espagne (1 aut., 2 aut., 3 aut., 4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 14; Pp. 2077-2082; Bibl. 24 ref.</SO>
<LA>Anglais</LA>
<EA>Psychogenic tremor (PT) is visually indistinguishable from voluntarily mimicked tremor. Healthy volunteers have difficulties with carrying out simultaneously two tasks due to the phenomenon known as dual task interference. Therefore, performing voluntary rhythmic movements would be a burden for carrying out fast ballistic movements with the contralateral hand. We hypothesized that, similarly to healthy volunteers performing rhythmic movements, patients with PT should show the effects of dual task interference, and this may distinguish them from patients with other types of tremor. We studied 6 patients with PT, 9 with Parkinson's disease (PD) and predominantly unilateral tremor, 11 with essential tremor (ET), and 10 normal volunteers (NV) mimicking tremor. They were requested to perform a unilateral simple reaction time task (SRT) to a visual imperative signal in two different conditions: at rest (rSRT) and during contralateral hand tremor (tSRT). Reaction time was significantly longer in tSRT than in rSRT in PT and in NV groups (P < 0.01 for both groups). However, no significant differences were observed between rSRT and tSRT in PD and ET. The delay of unilateral tSRT with respect to rSRT suggests an effect of tremorlike oscillatory movements on reaction time that is consistent with the concept of dual-task interference in NV or PT patients but not in PD or ET. These observations may be useful in the evaluation of psychogenic movement disorders.</EA>
<CC>002B17; 002B17A01; 002B02B11</CC>
<FD>Pathologie du   système nerveux; Tremblement; Maladie de Parkinson; Interférence; Psychogène; Temps réaction</FD>
<FG>Mouvement involontaire; Trouble neurologique; Pathologie de l'encéphale; Syndrome extrapyramidal; Maladie dégénérative; Pathologie du   système nerveux central</FG>
<ED>Nervous system diseases; Tremor; Parkinson disease; Interference; Psychogenic; Reaction time</ED>
<EG>Involuntary movement; Neurological disorder; Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease</EG>
<SD>Sistema nervioso patología; Temblor; Parkinson enfermedad; Interferencia; Psicógeno; Tiempo reacción</SD>
<LO>INIST-20953.354000174393170100</LO>
<ID>08-0069699</ID>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Dual Task Interference in Psychogenic Tremor

Dual Task Interference in Psychogenic Tremor

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