手功能康复卒中患者对侧受损运动皮质的募集现象

Recruitment of contralesional motor cortex in stroke patients with recovery of hand function

In neuroimaging studies of stroke patients, coactivation may account for incre ased recruitment of bilateral motor areas when moving the affected limb. Here we studied eight patients after stroke with fMRI and simultaneous EMG. Bilateral r ecruitment of premotor and primary motor cortices was evident in five patients w ith strictly unilateral performance per EMG. Because patients had excellent moto r recovery, this increased recruitment suggests an adaptive response to the infa rct.