TY  - BOOK
AU  - Lee, Sang Wook
TI  - Modular Organization of Exploratory Force Development Under Isometric Conditions in the Human Arm
SN  - 0022-2895
PY  - 2019///
KW  - *Arm/ph [Physiology]
KW  - *Isometric Contraction/ph [Physiology]
KW  - *Muscle, Skeletal/ph [Physiology]
KW  - *Psychomotor Performance/ph [Physiology]
KW  - Adult
KW  - Electromyography
KW  - Humans
KW  - Male
KW  - MedStar National Rehabilitation Network
KW  - Journal Article
N2  - Muscle coordination of isometric force production can be explained by a smaller number of modules. Variability in force output, however, is higher during exploratory/transient force development phases than force maintenance phase, and it is not clear whether the same modular structure underlies both phases. In this study, eight neurologically-intact adults isometrically performed target force matches in 54 directions at hands, and electromyographic (EMG) data from eight muscles were parsed into four sequential phases. Despite the varying degree of motor complexity across phases (significant between-phase differences in EMG-force correlation, angular errors, and between-force correlations), the number/composition of motor modules were found equivalent across phases, suggesting that the CNS systematically modulated activation of the same set of motor modules throughout sequential force development
UR  - https://dx.doi.org/10.1080/00222895.2017.1423020
ER  -