Surround inhibition in human motor system

  title={Surround inhibition in human motor system},
  author={Young Hwan Sohn and Mark Hallett},
  journal={Experimental Brain Research},
In sensory systems, a neural mechanism called surround inhibition (SI) sharpens sensation by creating an inhibitory zone around the central core of activation. In the motor system, the functional operation of SI remains to be demonstrated, although it has been hypothesized to contribute to the selection of voluntary movements. Here we test this hypothesis by using transcranial magnetic stimulation of the human motor cortex. The motor evoked potential of the little finger muscle is suppressed or… CONTINUE READING

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