Long Term Effect of Brain Stimulation in PPA

Inclusion Criteria: * Diagnosis of PPA according to the current consensus criteria supported by neuroimaging (FDG-PET or MRI) (Gorno-Tempini et al., 2011); * Clinical Dementia Rating scale equal or less than 1; * The language impairment is the main neurological deficit for the patient. Exclusion Criteria: * Patient diagnosed with a condition other than PPA that could cause language impairment; * History of epilepsy or presence of focal epileptiform pathology on EEG recording; ·Contraindications related to the treatments or procedures to be used (TMS and tDCS), such as ferromagnetic material, pregnancy, or breastfeeding; * Terminal illness or active malignancy; * Alcohol or substance abuse within the past year; * Major psychiatric disorders (schizophrenia, schizoaffective disorders, bipolar disorder, obsessive-compulsive disorder, or personality disorders); * Absolute inability to communicate (mutism), or poor command of the language that, in the investigator's judgment, would prevent participation in the study; * Severity of PPA that prevents participation in interventions or assessments at the time of inclusion; * Participation in another clinical trial within the previous 4 months; * Chronic use of medications that could affect study outcomes; * Antiepileptic drugs: allowed if on stable doses for at least 3 months before inclusion. If needed during the study due to seizure occurrence, they may be added; * Diazepam and derivatives: permitted only if on stable doses for at least 3 months before inclusion. Dose adjustments during the study are allowed; * Donepezil, Galantamine, Rivastigmine, and Memantine: allowed if on stable doses for at least 3 months before inclusion; * SSRIs (Selective Serotonin Reuptake Inhibitors): permitted only if on stable doses for at least 3 months prior to inclusion. If necessary during the study, they may be added; * Medications that may lower the seizure threshold (e.g., tricyclic antidepressants, antipsychotics): allowed if on stable doses for at least 3 months before inclusion.