Silent speech activates prefrontal cortical regions asymmetrically, as well as speech-related areas in the dominant hemisphere.

@article{Ryding1996SilentSA,
  title={Silent speech activates prefrontal cortical regions asymmetrically, as well as speech-related areas in the dominant hemisphere.},
  author={Erik Ryding and Bj{\"o}rn Br{\aa}dvik and David H. Ingvar},
  journal={Brain and language},
  year={1996},
  volume={52 3},
  pages={435-51}
}
Regional cerebral blood flow (rCBF) was measured simultaneously over the right and left hemispheres by 2 x 32 detectors in 30 healthy volunteers with a two-dimensional iv xenon-133 technique, during (1) rest and during (2) audible and (3) silent counting (101, 102,...). Mean hemisphere CBF increased significantly in both hemispheres during the activations. Audible speech activated rolandic and temporoparietal regions mainly on the right side. This pattern covers auditory and para-auditory as… CONTINUE READING

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