Initial Testing (baseline) - before treatment: Demographics (including education) and medical history questionnaire, Neurological exam, cognitive testing (MoCA), NIHSS, CETI, Barthel Index, modified Rankin scale After each treatment session: Assessment of adverse events (AE) and serious adverse events (SAE) 1 and 30 days after last treatment session: Neurological exam, cognitive testing (MoCA), NIHSS, Communicative Effectiveness Index (CETI), Barthel Index, modified Rankin scale.