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Enhancing multisensory rehabilitation of visual field defects with transcranial direct current stimulation: A randomized clinical trial
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Enhancing multisensory rehabilitation of visual field defects with transcranial direct current stimulation: A randomized clinical trial
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Enhancing multisensory rehabilitation of visual field defects with transcranial direct current stimulation: A randomized clinical trial
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Journal Article
Enhancing multisensory rehabilitation of visual field defects with transcranial direct current stimulation: A randomized clinical trial
2025
Overview
Background and Purpose Visual rehabilitation is necessary for improving the quality of life of patients with acquired homonymous visual field defects (HVFDs). By modulating brain excitability and plasticity, transcranial direct current stimulation (tDCS) may accelerate and increase the effects of compensatory trainings, which are usually long and intensive. In the present proof‐of‐principle, double‐blind, randomized, sham‐controlled study, we assess whether anodal tDCS applied over ipsilesional occipital or parietal cortices can increase the effects of a compensatory audiovisual training for HVFDs. Methods Eighteen participants with chronic HVFDs were randomized to receive anodal or sham tDCS over the ipsilesional parietal or occipital cortex during a 2‐week (10 days, 2 h/day) audiovisual treatment aimed at improving oculomotor visual field exploration. Improvements were assessed by administering visual detection with eye movements and visual search tests, and a questionnaire for activities of daily living (ADLs) before the treatment, at its end, and at 1‐month and 4‐month follow‐ups; lesion analyses were performed to look for predictors of treatment effects. Results Anodal ipsilesional tDCS, regardless of the target area (occipital vs. parietal), speeds up and increases daily improvements during the training. Whereas long‐lasting (up to 4 months) post‐treatment improvements in visual search and ADLs were observed in all groups, a greater and stable increase of visual detections in the blind hemifield was brought about only by the adjuvant use of occipital tDCS. Conclusions Compensatory audiovisual rehabilitation of HFVDs is effective and benefits from the adjuvant application of occipital and parietal tDCS, which speeds up and increases training‐induced improvement. Registry number: NCT06116760.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc
Subject
/ Adult
/ Aged
/ Defects
/ Electrical stimulation of the brain
/ ESB
/ Female
/ Hemianopsia - physiopathology
/ Hemianopsia - rehabilitation
/ Humans
/ Male
/ Occipital Lobe - physiopathology
/ Original
/ Parietal Lobe - physiopathology
/ stroke
/ Training
/ transcranial direct current stimulation
