Neurosci Biobehav Rev. 2016 Nov 14. pii: S0149-7634(16)30347-5. doi: 10.1016/j.neubiorev.2016.10.033. [Epub ahead of print]
Supplementary Motor Area as key structure for domain-general sequence processing: A unified account.
Copyright © 2016. Published by Elsevier Ltd.
PET; SMA; domain-general; fMRI; language; music; neuroimaging; numerical cognition; pre-SMA; sequence processing; space; supplementary motor area; time; working memory
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From my book on music, Beethoven's Anvil pp. 123-124:
As far as I know, no one has observed just where in the brain you direct your toe to tap. But the need to deliberately learn it and consciously think about doing it—until it becomes automatic—suggests that it is somewhere in the neocortical motor cortex. The fact that foot tapping is used to time actions executed variously by the throat, tongue and lips, the arms and fingers, and the lungs suggests that the oscillation is in a cortical region that isn’t directly linked to the leg and foot , but can access any set of muscles. The oscillation is probably not in primary motor cortex, then, but in secondary motor cortex. There is, in fact, considerable evidence that repetitive movement is regulated by a secondary motor region called the supplementary motor area (SMA). The SMA is one of the cortical regions where Petersen and his colleagues found an increase in metabolism during skilled performance.