Therapeutic Effects of Transcranial Alternative Current Stimulation (tACS) in Chronic Post Stroke Hemianopia

"This is a single-centric comparative randomized controlled blind and cross-over study.~The order of stimulation conditions will be randomized: (right frontal tACS / occipital tACS / tACS PLACEBO). The 3 stimulation conditions will be performed with a wash-out period of at least 1 week. In this study each patient will be his own control"