La maladie de Parkinson au Canada (serveur d'exploration)

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Stimulation of the Subthalamic Nucleus and Impulsivity: Release Your Horses

Identifieur interne : 000806 ( PascalFrancis/Curation ); précédent : 000805; suivant : 000807

Stimulation of the Subthalamic Nucleus and Impulsivity: Release Your Horses

Auteurs : Benedicte Ballanger [Canada] ; Thilo Van Eimeren [Canada] ; Elena Moro [Canada] ; Andres M. Lozano [Canada] ; Clement Hamani [Canada] ; Philippe Boulinguez [France] ; Giovanna Pellecchia [Canada] ; Sylvain Houle [Canada] ; YU YAN POON [Canada] ; Anthony E. Lang [Canada] ; Antonio P. Strafella [Canada]

Source :

RBID : Pascal:10-0051261

Descripteurs français

English descriptors

Abstract

Objective: In Parkinson disease (PD) patients, deep brain stimulation (DBS) of the subthalamic nucleus (STN) may contribute to certain impulsive behavior during high-conflict decisions. A neurocomputational model of the basal ganglia has recently been proposed that suggests this behavioral aspect may be related to the role played by the STN in relaying a "hold your horses" signal intended to allow more time to settle on the best option. The aim of the present study was 2-fold: 1) to extend these observations by providing evidence that the STN may influence and prevent the execution of any response even during low-conflict decisions; and 2) to identify the neural correlates of this effect. Methods: We measured regional cerebral blood flow during a Go/NoGo and a control (Go) task to study the motor improvement and response inhibition deficits associated with STN-DBS in patients with PD. Results: Although it improved Unified Parkinson Disease Rating Scale motor ratings and induced a global decrease in reaction time during task performance, STN-DBS impaired response inhibition, as revealed by an increase in commission errors in NoGo trials. These behavioral effects were accompanied by changes in synaptic activity consisting of a reduced activation in the cortical networks responsible for reactive and proactive response inhibition. Interpretation: The present results suggest that although it improves motor functions in PD patients, modulation of STN hyperactivity with DBS may tend at the same time to favor the appearance of impulsive behavior by acting on the gating mechanism involved in response initiation.
pA  
A01 01  1    @0 0364-5134
A02 01      @0 ANNED3
A03   1    @0 Ann. neurol.
A05       @2 66
A06       @2 6
A08 01  1  ENG  @1 Stimulation of the Subthalamic Nucleus and Impulsivity: Release Your Horses
A11 01  1    @1 BALLANGER (Benedicte)
A11 02  1    @1 VAN EIMEREN (Thilo)
A11 03  1    @1 MORO (Elena)
A11 04  1    @1 LOZANO (Andres M.)
A11 05  1    @1 HAMANI (Clement)
A11 06  1    @1 BOULINGUEZ (Philippe)
A11 07  1    @1 PELLECCHIA (Giovanna)
A11 08  1    @1 HOULE (Sylvain)
A11 09  1    @1 YU YAN POON
A11 10  1    @1 LANG (Anthony E.)
A11 11  1    @1 STRAFELLA (Antonio P.)
A14 01      @1 Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, University Health Network, University of Toronto @3 CAN @Z 1 aut. @Z 2 aut. @Z 4 aut. @Z 5 aut. @Z 10 aut. @Z 11 aut.
A14 02      @1 PET Imaging Centre, Centre for Addiction and Mental Health, University of Toronto @3 CAN @Z 1 aut. @Z 2 aut. @Z 7 aut. @Z 8 aut. @Z 11 aut.
A14 03      @1 Movement Disorders Center, Toronto Western Hospital, University Health Network, University of Toronto @3 CAN @Z 3 aut. @Z 9 aut. @Z 10 aut. @Z 11 aut.
A14 04      @1 Department of Neurosurgery, Toronto Western Hospital, University Health Network, University of Toronto @2 Toronto, Ontario @3 CAN @Z 4 aut. @Z 5 aut.
A14 05      @1 Center for Cognitive Neuroscience, Claude Bernard University @2 Lyon @3 FRA @Z 6 aut.
A20       @1 817-824
A21       @1 2009
A23 01      @0 ENG
A43 01      @1 INIST @2 16555 @5 354000189944920140
A44       @0 0000 @1 © 2010 INIST-CNRS. All rights reserved.
A45       @0 49 ref.
A47 01  1    @0 10-0051261
A60       @1 P
A61       @0 A
A64 01  1    @0 Annals of neurology
A66 01      @0 GBR
C01 01    ENG  @0 Objective: In Parkinson disease (PD) patients, deep brain stimulation (DBS) of the subthalamic nucleus (STN) may contribute to certain impulsive behavior during high-conflict decisions. A neurocomputational model of the basal ganglia has recently been proposed that suggests this behavioral aspect may be related to the role played by the STN in relaying a "hold your horses" signal intended to allow more time to settle on the best option. The aim of the present study was 2-fold: 1) to extend these observations by providing evidence that the STN may influence and prevent the execution of any response even during low-conflict decisions; and 2) to identify the neural correlates of this effect. Methods: We measured regional cerebral blood flow during a Go/NoGo and a control (Go) task to study the motor improvement and response inhibition deficits associated with STN-DBS in patients with PD. Results: Although it improved Unified Parkinson Disease Rating Scale motor ratings and induced a global decrease in reaction time during task performance, STN-DBS impaired response inhibition, as revealed by an increase in commission errors in NoGo trials. These behavioral effects were accompanied by changes in synaptic activity consisting of a reduced activation in the cortical networks responsible for reactive and proactive response inhibition. Interpretation: The present results suggest that although it improves motor functions in PD patients, modulation of STN hyperactivity with DBS may tend at the same time to favor the appearance of impulsive behavior by acting on the gating mechanism involved in response initiation.
C02 01  X    @0 002B17
C02 02  X    @0 002B26I
C03 01  X  FRE  @0 Pathologie du système nerveux @5 01
C03 01  X  ENG  @0 Nervous system diseases @5 01
C03 01  X  SPA  @0 Sistema nervioso patología @5 01
C03 02  X  FRE  @0 Noyau sousthalamique @5 09
C03 02  X  ENG  @0 Subthalamic nucleus @5 09
C03 02  X  SPA  @0 Núcleo subtalámico @5 09
C03 03  X  FRE  @0 Libération @5 10
C03 03  X  ENG  @0 Release @5 10
C03 03  X  SPA  @0 Liberación @5 10
C07 01  X  FRE  @0 Encéphale @5 37
C07 01  X  ENG  @0 Encephalon @5 37
C07 01  X  SPA  @0 Encéfalo @5 37
C07 02  X  FRE  @0 Système nerveux central @5 38
C07 02  X  ENG  @0 Central nervous system @5 38
C07 02  X  SPA  @0 Sistema nervioso central @5 38
N21       @1 032
N44 01      @1 OTO
N82       @1 OTO

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Pascal:10-0051261

Le document en format XML

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<div type="abstract" xml:lang="en">Objective: In Parkinson disease (PD) patients, deep brain stimulation (DBS) of the subthalamic nucleus (STN) may contribute to certain impulsive behavior during high-conflict decisions. A neurocomputational model of the basal ganglia has recently been proposed that suggests this behavioral aspect may be related to the role played by the STN in relaying a "hold your horses" signal intended to allow more time to settle on the best option. The aim of the present study was 2-fold: 1) to extend these observations by providing evidence that the STN may influence and prevent the execution of any response even during low-conflict decisions; and 2) to identify the neural correlates of this effect. Methods: We measured regional cerebral blood flow during a Go/NoGo and a control (Go) task to study the motor improvement and response inhibition deficits associated with STN-DBS in patients with PD. Results: Although it improved Unified Parkinson Disease Rating Scale motor ratings and induced a global decrease in reaction time during task performance, STN-DBS impaired response inhibition, as revealed by an increase in commission errors in NoGo trials. These behavioral effects were accompanied by changes in synaptic activity consisting of a reduced activation in the cortical networks responsible for reactive and proactive response inhibition. Interpretation: The present results suggest that although it improves motor functions in PD patients, modulation of STN hyperactivity with DBS may tend at the same time to favor the appearance of impulsive behavior by acting on the gating mechanism involved in response initiation.</div>
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