Figure 6.

Sections of $S_{\omega }$ acquired from sensor 1 (in the back of the hand), (a) Representation of peaks on $S_{\omega }$ signal on third exercise: The first peak corresponds to the time where a PB is collected from deposit, the second peak, corresponding to the instant at which the PB is placed in the corresponding peg and, the third peak corresponds to the action of taking the next PB. Task1 occurred between the first and second peak, and Task2 occurred between the second and third peak; (b) Some particular cases of peaks that can be found in the $S_{\omega }$ signal. Arrow 1: shows a peak too small to be considered a voluntary movement (to be discarded), Arrows 2: shows sets of nearby peaks that represent single movements, and arrow 3, shows a much smaller peak, but not small enough to be eliminated (it represents a hand movement).