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Premotor RT (PMT) distributions in the arm extension task and the finger abduction task. Data are proportions of the total number of trials observed across all participants in 10-ms PMT bins for each stimulus condition: control (82 dB), SCM− (115 dB, no sternocleidomastiod activity observed), and SCM+ (115 dB, sternocleidomastiod activity observed). PMT bin values are upper limits for that bin.
