Classification of movements according to submovement composition.

<p>(A) Examples of the 3 types of submovement decomposition characterizing all observed wrist velocity profiles. (B) Submovement duration distribution in the T₂Z₁ experimental condition, for 3 of the 6 selected participants, representative of the first three movement types. Each submovement is reported in a different line. The colored bars represent the mean duration and the horizontal lines the SD of the onset and of the offset of each submovement. Subjects presented a robust behavior across trials of the same block, as shown by stable segments duration distribution. (C) Frequency distribution of submovement types (expressed in percentage) for each ball arrival height and for each subject; different hand speed profile decomposition structures were sometimes observed when catching lower or higher targets, as in the case of subjects 2 and 3.