ParkinsonFranceV1, Main, Exploration, bibRecord, 000395

Parkinson's is Time on Your side? evidence for Difficulties with sensorimotor synchronization

Identifieur interne : 000395 ( Main/Exploration ); précédent : 000394; suivant : 000396

Parkinson's is Time on Your side? evidence for Difficulties with sensorimotor synchronization

Auteurs : Marta M. N. Bienkiewicz [France] ; Cathy M. Craig

Source :

Frontiers in Neurology [ 1664-2295 ] ; 2015-11.

RBID : Hal:hal-01414088

Abstract

There is lack of consistent evidence as to how well PD patients are able to accurately time their movements across space with an external acoustic signal. For years, research based on the finger-tapping paradigm, the most popular paradigm for exploring the brain's ability to time movement, has provided strong evidence that patients are not able to accurately reproduce an isochronous interval [i.e., Ref. (1)]. This was undermined by Spencer and Ivry (2) who suggested a specific deficit in temporal control linked to emergent, rhythmical movement not event-based actions, which primarily involve the cerebellum. In this study, we investigated motor timing of seven idiopathic PD participants in event-based sensorimotor synchronization task. Participants were asked to move their finger horizontally between two predefined target zones to synchronize with the occurrence of two sound events at two time intervals (1.5 and 2.5 s). The width of the targets and the distance between them were manipulated to investigate impact of accuracy demands and movement amplitude on timing performance. The results showed that participants with PD demonstrated specific difficulties when trying to accurately synchronize their movements to a beat. The extent to which their ability to synchronize movement was compromised was found to be related to the severity of PD, but independent of the spatial constraints of the task.

Url:

https://hal.archives-ouvertes.fr/hal-01414088

DOI: 10.3389/fneur.2015.00249

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Hal, to step Corpus: 000862
to stream Hal, to step Curation: 000862
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to stream Main, to step Curation: 000395

Le document en format XML

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<front><div type="abstract" xml:lang="en">There is lack of consistent evidence as to how well PD patients are able to accurately time their movements across space with an external acoustic signal. For years, research based on the finger-tapping paradigm, the most popular paradigm for exploring the brain's ability to time movement, has provided strong evidence that patients are not able to accurately reproduce an isochronous interval [i.e., Ref. (1)]. This was undermined by Spencer and Ivry (2) who suggested a specific deficit in temporal control linked to emergent, rhythmical movement not event-based actions, which primarily involve the cerebellum. In this study, we investigated motor timing of seven idiopathic PD participants in event-based sensorimotor synchronization task. Participants were asked to move their finger horizontally between two predefined target zones to synchronize with the occurrence of two sound events at two time intervals (1.5 and 2.5 s). The width of the targets and the distance between them were manipulated to investigate impact of accuracy demands and movement amplitude on timing performance. The results showed that participants with PD demonstrated specific difficulties when trying to accurately synchronize their movements to a beat. The extent to which their ability to synchronize movement was compromised was found to be related to the severity of PD, but independent of the spatial constraints of the task.</div>
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	La maladie de Parkinson en France (serveur d'exploration)
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La maladie de Parkinson en France (serveur d'exploration)

Parkinson's is Time on Your side? evidence for Difficulties with sensorimotor synchronization

Parkinson's is Time on Your side? evidence for Difficulties with sensorimotor synchronization

Source :

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri