Inclusion Criteria:  Mini Mental Status Exam score > 10 diagnosis of nfvPPA via Gorno-Tempini 2011 criteria, or a diagnosis of FTLD syndrome including progressive supranuclear palsy, corticobasal syndrome or behavioral variant frontotemporal dementia PLUS a motor speech disorder (apraxia of speech and/or dysarthria) able to give consent right-handed native English speaker having a caregiver who is also able to sign and understand the caregiver's consent form.  Exclusion Criteria: History of:  stroke TBI brain cancer seizures craniotomy, skull surgery or fracture metallic implant in head pacemaker or cardioverter-defibrillator pregnancy.