Inclusion Criteria:  Infant is 7-10 months of age (CCA) Clinical presentation of asymmetrical hand function, Grade 2/5 movement in more impaired upper extremity, Demonstrate potential to participate in 6 hours of therapy/week during 3 week episode of mCIMT-NMES, as determined by principal investigator, Parent/guardian willing to be partners in study and participate in follow-up assessments until child is 18 months of age  Exclusion Criteria:  Medical or sensory condition that prevents full therapy participation (active seizures, significant visual impairment) Received Botox injection to more impaired upper extremity within last 6 months, NMES contraindicated (impaired skin integrity, presence of pacemaker, clotting disorder), Previous UE surgery or nerve injury (brachial plexus)