Serial transcranial direct current stimulation in the treatment of homonymous visual field defects: a double-blind placebo-controlled study

Aim: Homonymous visual field defects (HVFD) are a common, debilitating consequence of stroke for which no effective therapy exists. Recent research presents transcranial direct current stimulation (tDCS), a safe, painless, non-invasive brain stimulation technique, as a potential therapy. The present study assesses the role of tDCS in HVFD rehabilitation. Methods: Eleven patients with chronic post-stroke HVFD participated in a within-subject, sham-controlled, double-blind pilot study. MRI-registered anodal tDCS (1.5 mA, 20 minutes) or sham tDCS was applied on 5 consecutive days over the ipsilesional calcarine sul…