A cortical slow potential is larger before an isolated movement of a single finger than simultaneous movement of two fingers.

@article{Kitamura1993ACS,
  title={A cortical slow potential is larger before an isolated movement of a single finger than simultaneous movement of two fingers.},
  author={Junichi Kitamura and Hiroshi Shibasaki and Toru Kondo},
  journal={Electroencephalography and clinical neurophysiology},
  year={1993},
  volume={86 4},
  pages={252-8}
}
Movement-related cortical potentials (MRCPs) preceding voluntary, self-paced, simultaneous extension of the middle and index fingers (two finger movement) were compared with those preceding extension of the index or middle finger alone (single finger movement) of the right hand in 7 right-handed normal subjects. It was meant to double the number of muscles involved in the two finger movement as compared with the single finger movement and to activate only the motor cortex involving the movement… CONTINUE READING

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