منابع مشابه
Submovement Composition of Head Movement
Limb movement is smooth and corrections of movement trajectory and amplitude are barely noticeable midflight. This suggests that skeletomuscular motor commands are smooth in transition, such that the rate of change of acceleration (or jerk) is minimized. Here we applied the methodology of minimum-jerk submovement decomposition to a member of the skeletomuscular family, the head movement. We exa...
متن کاملSubmovement overlap as a measure of movement smoothness
Many measures have been employed to quantify an aspect of healthy, skilled movement, which has been termed “movement smoothness” of which jerk is the most common. We propose a new, biologicallymotivated quantification of “movement smoothness”: submovement overlap. In previous work, changes in submovements have been linked to changes in movement smoothness. Further investigation revealed that in...
متن کاملRecognizing Head Movement
Previous studies have provided logical representations and eÆcient recognition algorithms for a simple kind of \minimalist grammars." This paper extends these grammars with head movement (\incorporation") and aÆx hopping. The recognition algorithms are elaborated for these grammars, and logical perspectives are brie y considered. Michaelis (1998) showed how the derivations of a simple kind of m...
متن کامل5 Head Movement
Head movement is the case of Move-α where the value of α is X°. As a case of Move-α, standard conditions on movement apply to it. These include locality, structure preservation, and the requirement that movement leave a well-formed trace. The principal locality condition on head movement is the Head Movement Constraint (HMC), originally proposed by Travis (1984) and given informally in (1): (1)...
متن کاملUsing Head Movement
This paper presents a methodology for automatically identifying human actions in either the frontal or the lateral view. By tracking the movement of the head of the subject over successive frames of a monocular grayscale image sequence, we recognize 1.2 different actions. The head is segmented automatically an each frame, and the feature vectors extracted. Input sequences captured from a fixed ...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2012
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0047565