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Published on: May 10, 2012
External globus pallidus stimulation modulates brain connectivity in Huntington's disease
Noémie Ligot1, Pierre Krystkowiak, Clémence Simonin
1Laboratoire de Cartographie Fonctionnelle du Cerveau, ULB-Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium. nligot@ulb.ac.be
Abstract:
Positron emission tomography with O-15-labeled water was used to study at rest the neurophysiological effects of bilateral external globus pallidus (GPe) deep brain stimulation in patients with Huntington's disease (HD). Five patients were compared with a control group in the on and off states of the stimulator. External globus pallidus stimulation decreased neuronal activity and modulated cerebral connectivity within the basal ganglia-thalamocortical circuitry, the sensorimotor, and the default-mode networks. These data indicate that GPe stimulation modulates functional integration in HD patients in accordance with the basal ganglia-thalamocortical circuit model.
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