Understanding the Interaction of Transcranial Direct Current Stimulation and Visual Feedback During an Ankle Movement Task.

Motor Control

Brain Plasticity Laboratory, Department of Physical Therapy, College of Applied Health Sciences, University of Illinois, Chicago, IL,USA.

Published: October 2023

Background: Transcranial direct current stimulation (tDCS) has been demonstrated to facilitate motor performance in healthy individuals; however, results are variable. The neuromodulatory effects of tDCS during visuomotor tasks may be influenced by extrinsic visual feedback. However, this interaction between tDCS and visual feedback has not been explored for the lower limb. Hence, our objective was to explore if tDCS over the primary lower limb motor cortex differentially facilitates motor performance based on the availability of visual feedback.

Methods: Twenty-two neurotypical adults performed ankle plantarflexion and dorsiflexion movements while tracking a sinusoidal target. Spatiotemporal, spatial, and temporal error were calculated between the ankle position and target. Participants attended two sessions, a week apart, with (Stim) and without (No-Stim) anodal tDCS. Sessions were divided into two blocks containing randomized visual feedback conditions: full, no, and blindfold. During Stim sessions, the first block included the application of tDCS to the lower limb M1.

Results: Spatiotemporal and spatial error increased as feedback faded (p < .001). A two-way repeated-measures analysis of variance showed a significant interaction between tDCS and visual feedback (p < .05) on spatiotemporal error. Post hoc analyses revealed a significant improvement in spatiotemporal error when visual feedback was absent (p < .01). Spatial and temporal errors were not significantly affected by stimulation or visual feedback.

Discussion: Our results suggest that tDCS enhances spatiotemporal ankle motor performance only when visual feedback is not available. These findings indicate that visual feedback may play an important role in demonstrating the effectiveness of tDCS.

Download full-text PDF

Source
http://dx.doi.org/10.1123/mc.2022-0105DOI Listing

Publication Analysis

Top Keywords

visual feedback
32
motor performance
12
lower limb
12
visual
10
feedback
9
tdcs
9
transcranial direct
8
direct current
8
current stimulation
8
stimulation visual
8

Similar Publications

Older adults with cognitive impairment are at risk of medication-taking errors. This study assessed the impact of providing medication adherence feedback to cognitively impaired older adults. Forty participants with mild cognitive impairment or mild dementia had their medication adherence electronically monitored for 8 weeks.

View Article and Find Full Text PDF

Insomnia after acquired brain injury (ABI) is common and can negatively impact an individual's rehabilitation, recovery, and quality of life. The present study investigated the feasibility and preliminary efficacy of a Brief Behavioural Treatment for Insomnia (BBTI) in a community sample following ABI. Ten participants were recruited.

View Article and Find Full Text PDF

Development and pilot testing of INTERVENER, a web-based tool to match barriers to the cancer continuum organization to evidence-based interventions.

BMC Health Serv Res

January 2025

Early Detection, Prevention & Infections Branch, International Agency for Research on Cancer, 25 Avenue Tony Garnier, Lyon, 69366 Cedex 07, France.

Background: Barriers to the cancer continuum organization and interventions to approach them have been identified; however, there is a lack of a tool matching them. Our aim was to develop a web-based tool to identify the main barriers to the process of the cancer continuum organization, and propose matched evidence-based interventions (EBI) to overcome them.

Methods: A questionnaire on barriers at six steps of the process of the cancer continuum organization was answered by collaborators.

View Article and Find Full Text PDF

Background: Though the Dietary Guidelines for Americans recommend that individuals drink water instead of sugar-sweetened beverages (SSBs), this behavior is influenced and reinforced by a complex network of structures and systems.

Objective: The objectives of this study were to develop a shared understanding among multiple stakeholders about the structural and underlying, interconnected drivers of SSB and water consumption in the Washington D.C.

View Article and Find Full Text PDF

Background: The Diabetes Prevention Program Outcomes Study (DPPOS) is an established cohort of aging persons (mean age 72 years) with prediabetes and diabetes with a mean of 23 (range 21‐25) years of follow‐up. DPPOS added neuropsychological testing using the National Alzheimer’s Coordinating Center (NACC) Uniform Data Set (UDSv3) forms. Using the NACC UDS required implementing a standardized neurological examination across 25 US clinical sites, administered by project coordinators (PC).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!