Dataset Information

Beta synchrony in the cortico-basal ganglia network during regulation of force control on and off dopamine.

ABSTRACT: Beta power suppression in the basal ganglia is stronger during movements that require high force levels and high movement effort but it has been difficult to dissociate the two. We recorded scalp EEG and basal ganglia local field potentials in Parkinson's disease patients (11 STN, 7 GPi) ON and OFF dopaminergic medication while they performed a visually-guided force matching task using a pen on a force-sensitive graphics tablet. Force adjustments were accompanied by beta power suppression irrespective of whether the force was increased or reduced. Before the adjustment was completed, beta activity returned. High beta power was specifically associated with slowing of the force adjustment. ON medication, the peak force rate was faster and cortico-basal ganglia beta phase coupling was more readily modulated. In particular, phase decoupling was stronger during faster adjustments. The results suggest that beta power in the basal ganglia does not covary with force per se, but rather with a related factor, the absolute force rate, or a more general concept of movement effort. The results also highlight that beta activity reappears during stabilization of isometric contractions, and that dopamine-related suppression of cortico-basal ganglia beta coupling is linked to faster force adjustments.

SUBMITTER: Fischer P

PROVIDER: S-EPMC6517271 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Beta synchrony in the cortico-basal ganglia network during regulation of force control on and off dopamine.

Fischer Petra P Pogosyan Alek A Green Alexander L AL Aziz Tipu Z TZ Hyam Jonathan J Foltynie Thomas T Limousin Patricia P Zrinzo Ludvic L Samuel Michael M Ashkan Keyoumars K Da Lio Mauro M De Cecco Mariolino M Fornaser Alberto A Brown Peter P Tan Huiling H

Neurobiology of disease 20190306

Beta power suppression in the basal ganglia is stronger during movements that require high force levels and high movement effort but it has been difficult to dissociate the two. We recorded scalp EEG and basal ganglia local field potentials in Parkinson's disease patients (11 STN, 7 GPi) ON and OFF dopaminergic medication while they performed a visually-guided force matching task using a pen on a force-sensitive graphics tablet. Force adjustments were accompanied by beta power suppression irresp ...[more]

PMID: 30849510

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Dataset Information

Beta synchrony in the cortico-basal ganglia network during regulation of force control on and off dopamine.

Publications

Beta synchrony in the cortico-basal ganglia network during regulation of force control on and off dopamine.

Similar Datasets

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