Figure 5From: Dual-task motor performance with a tongue-operated assistive technology compared with hand operationsEffects of task and difficulty level on the coefficient of variation (CV) of time interval during rapid continuous movement. The data in hand (a) and tongue (b) in Part 1 of Session 2 are presented. H, independent hand task; T, independent tongue task; HT, concurrent hand-tongue task; HC, concurrent hand-cognitive task; TC, concurrent tongue-cognitive task. **, P < 0.01.Back to article page