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The polarity of high-definition transcranial direct current stimulation affects the planning and execution of movement sequences.
Neuroimage
January 2025
Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE, USA; College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Pharmacology & Neuroscience, Creighton University, Omaha, NE, USA. Electronic address:
Noninvasive brain stimulation of the primary motor cortex has been shown to alter therapeutic outcomes in stroke and other neurological conditions, but the precise mechanisms remain poorly understood. Determining the impact of such neurostimulation on the neural processing supporting motor control is a critical step toward further harnessing its therapeutic potential in multiple neurological conditions affecting the motor system. Herein, we leverage the excellent spatio-temporal precision of magnetoencephalographic (MEG) imaging to identify the spectral, spatial, and temporal effects of high-definition transcranial direct current stimulation (HD-tDCS) on the neural responses supporting motor control.
View Article and Find Full Text PDFAcceptability, Feasibility, and Effectiveness of Concurrent High-Definition Transcranial Direct Current Stimulation and Cue Exposure in Cannabis Use Disorder: A Pilot Double-Blind Randomized Controlled Trial.
J ECT
December 2024
From the Department of Psychiatry, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Objectives: We studied the acceptability, feasibility, tolerability, and preliminary effectiveness of combined cue exposure and anodal high-definition transcranial direct current stimulation (HD-tDCS) on the right dorsolateral prefrontal cortex (DLPFC) on cannabis craving in cannabis use disorder (CUD).
Methods: We randomly assigned 48 participants equally in 4 groups: A, tDCS and cannabis cue exposure; B, tDCS and neutral image; C, sham tDCS and cue exposure; and D, sham tDCS and neutral image. The images were validated by Delphi consensus.
Partially dissociative role of the left inferior frontal gyrus and left dorsolateral prefrontal cortex in reasoning.
PLoS One
December 2024
Department of Psychology, University of Graz, Graz, Austria.
Article Synopsis
- Reasoning involves drawing conclusions from information, with two main types: deductive (drawing specific conclusions from general principles) and inductive (generalizing from specific instances).
- Recent neuroimaging studies suggest that different brain areas, specifically the left inferior frontal gyrus (IFG) and the left dorsolateral prefrontal cortex (DLPFC), are used for these reasoning types, but results have been inconsistent.
- This study utilized high-definition transcranial direct current stimulation (HD-tDCS) on these brain areas to assess their roles in reasoning, finding that IFG stimulation can impair deductive reasoning tasks, while DLPFC stimulation improves performance on challenging inductive reasoning tasks.
High - definition transcranial direct current stimulation (HD-tDCS) to the medial prefrontal cortex (mPFC) alleviates occupational gender stereotypes.
Neuropsychologia
October 2023
Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Beibei, Chongqing, 400715, China; School of Psychology, Southwest University, Chongqing, 400715, China.
Article Synopsis
- - Occupational gender stereotypes are misconceptions that link certain jobs to specific genders, which can limit individuals' career choices; reducing these stereotypes allows for more freedom in job selection.
- - The study investigates the effect of transcranial direct current stimulation (tDCS) on these stereotypes, specifically targeting the medial prefrontal cortex (mPFC) and measuring changes using the Implicit Association Test (IAT) and EEG data.
- - Results indicated that those receiving anodal tDCS showed reduced implicit bias and quicker reaction times when assessing gender-job associations, but no significant differences were seen in brain activity (ERPs); this suggests tDCS could be a useful tool for addressing gender stereotypes in occupations.
Practice improves older adults' attentional control and prospective memory more than HD-tDCS: a randomized controlled trial.
Sci Rep
October 2024
University Hospital of Old Age Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland.
Frontal and parietal brain regions are involved in attentional control and prospective memory. It is debated, however, whether increased or decreased activity in those regions is beneficial for older adults' task performance. We therefore aimed to systematically modulate activity in those regions using high-definition transcranial direct current stimulation.
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