Transcranial magnetic stimulation of posterior parietal cortex affects decisions of hand choice.

@article{Oliveira2010TranscranialMS,
  title={Transcranial magnetic stimulation of posterior parietal cortex affects decisions of hand choice.},
  author={Flavio Tanaka Pereira Oliveira and J{\"o}rn Diedrichsen and Timothy Verstynen and Julie Duque and Richard B. Ivry},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2010},
  volume={107 41},
  pages={
          17751-6
        }
}
Deciding which hand to use for an action is one of the most frequent decisions people make in everyday behavior. Using a speeded reaching task, we provide evidence that hand choice entails a competitive decision process between simultaneously activated action plans for each hand. We then show that single-pulse transcranial magnetic stimulation to the left posterior parietal cortex biases this competitive process, leading to an increase in ipsilateral, left hand reaches. Stimulation of the right… CONTINUE READING
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