Dopamine boosts intention and action awareness in Parkinson's disease
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Dopamine boosts intention and action awareness in Parkinson's disease. / Di Costa, Steven; Barow, Ewgenia; Hidding, Ute; Mainka, Tina; Pötter-Nerger, Monika; Buhmann, Carsten; Moll, Christian K E; Haggard, Patrick; Ganos, Christos.
in: EXP BRAIN RES, Jahrgang 238, Nr. 9, 09.2020, S. 1989-1995.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Dopamine boosts intention and action awareness in Parkinson's disease
AU - Di Costa, Steven
AU - Barow, Ewgenia
AU - Hidding, Ute
AU - Mainka, Tina
AU - Pötter-Nerger, Monika
AU - Buhmann, Carsten
AU - Moll, Christian K E
AU - Haggard, Patrick
AU - Ganos, Christos
PY - 2020/9
Y1 - 2020/9
N2 - Dopaminergic deficiency in Parkinson's disease (PD) has been associated with underactivation of the supplementary motor area and a reduction of voluntary actions. In these patients, awareness of intention to act has been shown to be delayed. However, delayed awareness of intention to act has also been shown in patients with hyperdopaminergic states and an excess of unwilled movements, as in Tourette's, and in patients with functional movement disorders. Hence, the role of dopamine in the awareness of intention and action remains unclear. 36 PD patients were tested ON and OFF dopaminergic medication and compared with 35 healthy age-matched controls. In addition, 17 PD patients with subthalamic deep brain stimulation (DBS) were tested ON medication and ON and OFF stimulation. Participants judged either the moment a self-generated action was performed, or the moment the urge to perform the action was felt, using the "Libet method". Temporal judgments of intention and action awareness were comparable between unmedicated PD patients and controls. Dopaminergic medication boosted anticipatory awareness of both intentions and actions in PD patients, relative to an unmedicated condition. The difference between ON/OFF DBS was not statistically reliable. Functional improvement of motor ability in PD through dopaminergic supplementation leads to earlier awareness of both intention, and of voluntary action.
AB - Dopaminergic deficiency in Parkinson's disease (PD) has been associated with underactivation of the supplementary motor area and a reduction of voluntary actions. In these patients, awareness of intention to act has been shown to be delayed. However, delayed awareness of intention to act has also been shown in patients with hyperdopaminergic states and an excess of unwilled movements, as in Tourette's, and in patients with functional movement disorders. Hence, the role of dopamine in the awareness of intention and action remains unclear. 36 PD patients were tested ON and OFF dopaminergic medication and compared with 35 healthy age-matched controls. In addition, 17 PD patients with subthalamic deep brain stimulation (DBS) were tested ON medication and ON and OFF stimulation. Participants judged either the moment a self-generated action was performed, or the moment the urge to perform the action was felt, using the "Libet method". Temporal judgments of intention and action awareness were comparable between unmedicated PD patients and controls. Dopaminergic medication boosted anticipatory awareness of both intentions and actions in PD patients, relative to an unmedicated condition. The difference between ON/OFF DBS was not statistically reliable. Functional improvement of motor ability in PD through dopaminergic supplementation leads to earlier awareness of both intention, and of voluntary action.
U2 - 10.1007/s00221-020-05847-2
DO - 10.1007/s00221-020-05847-2
M3 - SCORING: Journal article
C2 - 32594193
VL - 238
SP - 1989
EP - 1995
JO - EXP BRAIN RES
JF - EXP BRAIN RES
SN - 0014-4819
IS - 9
ER -
