Functional imaging of human motor cortex at high magnetic field.

  title={Functional imaging of human motor cortex at high magnetic field.},
  author={S. G. Kim and James Ashe and Apostolos P. Georgopoulos and Hellmut Merkle and Jutta M. Ellermann and Ravi S. Menon and Seiji Ogawa and K{\^a}mil Uğurbil},
  journal={Journal of neurophysiology},
  volume={69 1},
1. We used conventional gradient echo magnetic resonance imaging (MRI) at high field strength (4 Tesla) to functionally image the right motor cortex in six normal human subjects during the performance of a sequence of self-paced thumb to digit oppositions with the left hand (contralateral task), the right hand (ipsilateral task), and both hands (bilateral task). 2. A localized increase in activity in the lateral motor cortex was observed in all subjects during the task. The area of activation… 

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