Effects of Neuronavigated Theta Burst Stimulation in Therapy of Post-stroke Aphasia

Inclusion Criteria: * First-ever left middle cerebral artery ischemic stroke (brain damage localization confirmed by magnetic resonance imaging, MRI) * 3 or more months from the onset of stroke * Non-fluent aphasia (confirmed in the BDAE test) with functional communication difficulties ranging from mild to significant (grades from 2 to 4 in ASRS), marked difficulties in naming, and relatively preserved everyday speech comprehension * Native Polish speaker * Right-handedness prior to stroke * Signing of the informed consent for the participation in the study. Exclusion Criteria: * Psychiatric and/or neurological comorbidity (e. g. dementia, depressive disorder, alcohol dependence) * Diagnose of epilepsy or epileptic changes in EEG, also frequent losses of consciousness of unclear etiology which might suggest epileptic seizures * History of any neurosurgical procedure around the head area * 1.5 T MRI examination contraindications (metal elements in the body, e. g. implantable cardioverter-defibrillator, deep brain stimulation devices; claustrophobia) * Regular intake of medication that could affect cortical excitability (e. g. antiepileptic or antipsychotic drugs, antidepressants, benzodiazepines) or medication influencing neuroplastic processes (e. g. dopamine) * Significant cognitive impairment limiting patient's cooperation during assessment and behavioral aphasia therapy * Visual deficits significantly hindering the perception of therapeutic tasks presented visually on a computer's screen * New neurological episode (e. g. another brain stroke) or somatic illness (e. g. COVID-19) during the cycle of the therapy, requiring its interruption.