Figure 2.

Surface electromyography (EMG) recording from the contralateral (black line) and ipsilateral (blue line) wrist flexors in a 12-month-old infant with unilateral perinatal stroke. (A) Motor evoked potential (MEP) in the contralateral wrist flexor elicited by transcranial magnetic stimulation (TMS) of the less-affected hemisphere. (B) EMG signal displaying absence of MEP in either wrist flexor after TMS of the more-affected hemisphere. Both traces A and B were recorded at a TMS intensity of 85% of maximum stimulator output.