Willed action and the prefrontal cortex in man: a study with PET.

@article{Frith1991WilledAA,
  title={Willed action and the prefrontal cortex in man: a study with PET.},
  author={Christopher D. Frith and Karl J. Friston and Peter F. Liddle and Richard S. Frackowiak},
  journal={Proceedings. Biological sciences},
  year={1991},
  volume={244 1311},
  pages={
          241-6
        }
}
We used positron emission tomography to contrast changes in cerebral blood flow associated with willed and routine acts. In the six tasks used, volunteers had to make a series of responses to a sequence of stimuli. For the routine acts, each response was completely specified by the stimulus. For the willed acts, the response was open-ended and therefore volunteers had to make a deliberate choice. Willed acts in the two response modalities studied (speaking a word, or lifting a finger) were… CONTINUE READING

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