tDCS and Robotic Training in Adults With Cerebral Palsy

Inclusion Criteria: * Participant willing and able to provide informed consent * Diagnosis of hemiplegic Cerebral Palsy * Joint mobility: wrist extention (20 degrees), metacarophalangeal and proximal interphalangeal joints (10 degrees) Exclusion Criteria: * Cognitive deficits that impede understanding of study protocol * Current medical illness unrelated to CP * Visual problems (uncorrected by glasses/contact lenses) * High motor ability in affected arm * Severe spasticity * Lack of asymmetry in hand function * Orthopedic surgery in affected arm within 2 years * Dorsal root rhizotomy * Botulinum toxin therapy in either upper extremity during last 2 months, or planned during study period * Currently receiving intrathecal baclofen * Seizure beyond age 2, use of anti-seizure medication, history of epilepsy (in self or first degree relatives), brain surgery, cranial metal implants, structural brain lesion, deices that may be affected by TMS (pacemaker, medication pump, cochlear implant, implanted brain stimulator) * True positive response on the Transcranial Magnetic Stimulation Safety Screen * Current use of medications known to lower the seizure threshold * Previous episode of neurocardiogenic snycopy