Technical Comments

Comment on “Movement Intention After Parietal Cortex Stimulation in Humans”

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Science  05 Mar 2010:
Vol. 327, Issue 5970, pp. 1200
DOI: 10.1126/science.1183735

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Desmurget et al. (Reports, 8 May 2009, p. 811) applied direct electrical stimulation (DES) to the human cortex to study the origin of movement intention. Their interpretation assumed that DES causes cortical activation, whereas it is possible that it actually evokes deactivation. The lack of certain knowledge about the true effects of DES limits its use for validation of cognitive models.

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