Stability of hand force production. II. Ascending and descending synergies
نویسندگان
چکیده
منابع مشابه
What do synergies do? Effects of secondary constraints on multidigit synergies in accurate force-production tasks.
We used the framework of the uncontrolled manifold (UCM) hypothesis to explore changes in the structure of variability in multifinger force-production tasks when a secondary task was introduced. Healthy young subjects produced several levels of the total force by pressing with the four fingers of the hand on force sensors. The frame with the sensors rested on the table (Stable condition) or on ...
متن کاملFunctional muscle synergies constrain force production during postural tasks.
We recently demonstrated that a set of five functional muscle synergies were sufficient to characterize both hindlimb muscle activity and active forces during automatic postural responses in cats standing at multiple postural configurations. This characterization depended critically upon the assumption that the endpoint force vector (synergy force vector) produced by the activation of each musc...
متن کاملAscending and Descending Conditional Independence Relations
We explore the conditional probabilistic independences of systems of random variables (I; JjK), to read \I is conditionally independent of J given K", which are ascending (I; JjK)) (I; JjK L) or descending (I; JjK L)) (I; JjK). The resulting abstract independence structures can be equivalently described by weak families of connected sets. Using, in addition, probabilistic representations of mat...
متن کاملAscending and Descending Walking Recognition using Smartphone
In the recent decades, activity recognition for human behavior monitoring has been one of the major interesting research subjects. This paper investigates fractal dimension (FD) as an effective feature for human activity recognition. The target activities are descending and ascending stairs, which are performed by six male participants. To testify the validity of feature, the classification met...
متن کاملPermutations with Ascending and Descending Blocks
We investigate permutations in terms of their cycle structure and descent set. To do this, we generalize the classical bijection of Gessel and Reutenauer to deal with permutations that have some ascending and some descending blocks. We then provide the first bijective proofs of some known results. We also solve some problems posed in [4] by Eriksen, Freij, and Wästlund, who study derangements t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2018
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00045.2018