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Defining the M1 foot ROI. (A) Tasks to define the M1 foot ROI. We use the right foot, right hand, and trunk tasks to identify the brain regions that are activated during the right foot task, but not during the right hand and trunk tasks. (B) Procedures to define the M1 foot ROI (green section). Please see the text for details. M1, primary motor cortex; ROI, region-of-interest.
