Motor Modules are Impacted by the Number of Reaching Directions Included in the Analysis.

ABSTRACT: Muscle synergy analysis is commonly used to study how the nervous system coordinates the activation of a large number of muscles during human reaching. In synergy analysis, muscle activation data collected from various reaching directions are subjected to dimensionality reduction techniques to extract muscle synergies. Typically, muscle activation data are obtained only from a limited set of reaches with an inherent assumption that the performed reaches adequately represent all possible reaches. In this study, we investigated how the number of reaching directions included in the synergy analysis influences the validity of the extracted synergies. We used a musculoskeletal model to compute muscle activations required to perform 36 evenly spaced planar reaches. Nonnegative matrix factorizati

SUBMITTER: Augenstein TE 

PROVIDER: S-EPMC7571860 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature