Some months ago I have collected some infos regarding the topic "Manipulation taxonomy", included in a scientific article.
Before posting the images, i would like just to remind that one the goals of the taxonomy is presenting a classification system with category units (named taxon).
In order to be useful the taxonomy should contain:
- a taxa with clear different features from the other ones, but sub-taxon with similar features
- sub-taxon should not be more than 3-7 in order to be memorized
Moreover Taxon should be hierarchically organised.
In my opinion, there are 3 main Juggling Taxon:
- Toss (with 2 other big Sub-Taxon: Throwing and Catching)
The images you'll find below, are taken from the following scientific article:
Classifying Human Hand Use and the Activities of Daily Living - A. M. Dollar
Some of the actions listed by Thomas belong actually to the Manipulation/Grasp category and they could be partially described by these taxonomies. Anyway Dollar during his studies just considered the manipulation as the interaction hand-object but we obviously should consider a more extended interaction body-object.
For example considering the category precision in the grasp taxonomy, precision could be considered involving for example the use of 2, 3 or more body parts.
Beside Manipulation, other juggling categories or other juggling task categories could be developed (and actually we could try to start to do it here!). For example the stall mentioned by Erik could be a catch, if we consider the case of an object lying on a body part ( and not in balance!), involving a body part different from the hand (arm, forehead, foot, neck, ...).
Where could be located a neck catch?
TOSS->CATCHING->SINGLE OBJECT CATCH ( or NO OBJECTS CATCH (drop)/MULTIPLE OBJECTS (multiplexes) -> BODY MOVEMENT INVOLVED ( or NOT INVOLVED) ->CATCH USING HAND (or BODY) -> NOT IN MOTION (or IN MOTION)
Where could be located a stall?
TOSS->CATCHING->SINGLE OBJECT CATCH -> BODY INVOLVED ->CATCH USING BODY -> NOT IN MOTION