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. 2013 Oct 9;33(41):16178–16188. doi: 10.1523/JNEUROSCI.2638-13.2013

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Copyright © 2013 the authors 0270-6474/13/3316178-11$15.00/0

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Figure 4. — iSP during movement execution. A, B, Raw traces showing rectified EMG activity in representative subjects during iSP testing in self-paced and ballistic index finger (A) and elbow flexion (B) movements. Traces show the average 40 trials tested with (red traces) and without (black traces) TMS. Traces below iSPs show the rectified EMG activity and angular displacement during each movement condition. Vertical solid lines show the time of TMS during testing. C, D, Group data (index finger task, n = 14, C; elbow task, n = 11, D). The abscissa shows all conditions tested (self-paced and ballistic). The ordinate shows the normalized iSP area. Note the increase in the iSP during ballistic index finger and elbow movements compared to self-paced movements. Error bars indicate SEs. *p < 0.05.