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Transcranial Direct Current Stimulation: Effects on Motor and Non-Motor Symptoms of Parkinson’s Disease

Journal of Behavioral and Brain Science 2024年第5期14卷 135-160页

作者： Fayda Protásio Carlos Alberto Bezerra Tomaz Joaquim Brasil-Neto Pedro Brandão Nasser Allam maria clotilde henriques tavares Laboratory of Neuroscience and Behavior Department of Physiological Sciences Institute of Biology University of Braslia Braslia Brazil Master Program in Environment University CEUMA So Lus MA and Faculty of Medicine Euro-American University Center-UNIEURO Braslia Brazil Faculty of Medicine Euro-American University Center-UNIEURO Braslia Brazil NA Neurologistas Associados Braslia Brazil

Introduction: In the last thirty years, brain neuromodulation techniques have been used as an alternative to pharmacological treatment of neurological disorders. Parkinson’s disease (PD) is a neurodegenerative disorder leading to bradykinesia, rest tremor, postural changes, and non-motor symptoms such as depression, anxiety, sleep disorders, pain, and cognitive decline that compromises executive functions (EFs), responsible for the orderly execution of behaviors and tasks of daily life and intentional and directed actions. To this date, a few studies with transcranial direct current stimulation (tDCS) have shown beneficial effects in PD patients concerning specific motor and non-motor symptoms, targeting the motor cortex and/or prefrontal regions. Objective: The main objective of this study was to evaluate the effects of left prefrontal tDCS across a broad spectrum of motor and non-motor symptoms of PD using established validated scales. Method: Single-blind randomized clinical trial with 18 volunteers with PD, aged between 45 and 80 years (66.1 ± 9.65), who met inclusion and exclusion criteria. Participants were submitted to assessments of motor and non-motor functions employing psychometric scales and tests to evaluate EFs and were randomly divided into two groups: control (sham stimulation) and experimental (active stimulation). All participants were involved in three separate tDCS sessions. The anode was positioned over the left dorsolateral prefrontal cortex and the cathode over the right supraorbital region, with a direct current intensity of 2 mA, lasting 20 minutes. At the end of the three sessions, all participants were reassessed. Results: Significant effects of tDCS on non-motor functions were observed for cognition (verbal fluency of actions, clock copy test, appointment by visual confrontation, and verbal memory with immediate free recall) and subjective assessment of sleep quality (overall restlessness and discomfort in the arms and legs at night, leg

关键词： Parkinson’s Disease Neuromodulation Transcranial Direct Current Stimulation—tDCS Movement Disorders Mood Sleep Cognition

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Transcranial Direct Current Stimulation: Effects on Motor and Non-Motor Symptoms of Parkinson’s Disease

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Journal of Behavioral and Brain Science（行为与脑科学期刊） 2024年第5期 135页

作者： Fayda Protásio Carlos Alberto Bezerra Tomaz Joaquim Brasil-Neto Pedro Brandão Nasser Allam maria clotilde henriques tavares

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