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Comparison of muscle and neural cancelation times. Cumulative proportion of recording sessions from pre-SMA neurons (solid thin line), SMA neurons (dashed thin line), and muscles (thick line) with cancelation times relative to the SSRT boundary. The red arrow points to the proportion of muscle cancelation times before the SSRT (0.68). For the pre-SMA neurons and SMA neurons, this proportion is 0 and 0.3, respectively.
