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. 2014 Apr 28;6:79. doi: 10.3389/fnagi.2014.00079

FIGURE 1.

FIGURE 1

Schematic overview of the protocol. Red lines represent the cognitive task, black lines the motor task. Task Ia, practice of the choice reaction time task (CRT), 150 consecutive stimuli. Task Ib, practice of the choice reaction time task (CRT), 3 times 50 stimuli. Task II, right index finger abduction, determination of maximal voluntary force (MVC). Task III, Single CRT-task. Responding to the auditory stimuli as fast and as accurate as possible. Task IV, Dual task. One session the dual-task at 30% of cMVC (30%-dual-task), one session the dual-task at 10% of cMVC (10%-dual-task). All subjects performed three sessions. In session 1, all tasks were practiced; session 2 and 3 were the experimental sessions in which Task I to III were similar for the two sessions and Task IV was alternated between the 10 or the 30%-dual-task.