Control signal dimensionality depends on limb dynamics
Guardado en:
| Publicado en: | PLoS One vol. 20, no. 4 (Apr 2025), p. e0322092 |
|---|---|
| Autor principal: | |
| Otros Autores: | |
| Publicado: |
Public Library of Science
|
| Materias: | |
| Acceso en línea: | Citation/Abstract Full Text Full Text - PDF |
| Etiquetas: |
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
MARC
| LEADER | 00000nab a2200000uu 4500 | ||
|---|---|---|---|
| 001 | 3198104526 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 1932-6203 | ||
| 024 | 7 | |a 10.1371/journal.pone.0322092 |2 doi | |
| 035 | |a 3198104526 | ||
| 045 | 2 | |b d20250401 |b d20250430 | |
| 084 | |a 174835 |2 nlm | ||
| 100 | 1 | |a Korol, Anna S | |
| 245 | 1 | |a Control signal dimensionality depends on limb dynamics | |
| 260 | |b Public Library of Science |c Apr 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a Neural control of movement has to overcome the problem of redundancy in the multidimensional musculoskeletal system. The problem can be solved by reducing the dimensionality of the control space of motor commands, i.e., through muscle synergies or motor primitives. Evidence for this solution exists; multiple studies have obtained muscle synergies using decomposition methods. These synergies vary across different workspaces and are present in both dominant and non-dominant limbs. We explore the effect of biomechanical constraints on the dimensionality of control space. We also test the generalizability of prior conclusions that muscle activity profiles can be explained by applied moments about the limb joints that compensate for dynamic and gravitational forces during reaching. These muscle moments derived from motion capture represent the combined actions of muscle contractions that are under the control of the nervous system. Here, we test the hypothesis that the control space dimensionality is shaped by the complexity of dynamic and gravitational forces. To achieve this, we examined muscle activity patterns across reaching movements in different directions, starting from different postures performed bilaterally by healthy individuals. We used principal component analysis to evaluate the contribution of individual muscles to producing muscle moments across different reaching directions and in both dominant and non-dominant limbs. Extending our earlier work, we find that muscle activity profiles are described well by muscle moment profiles during reaching by both dominant and non-dominant arms. Our results further show that the dimensionality of control signals depends on the complexity of muscle moments, supporting the primary hypothesis. Our results suggest that the neural control strategy for limb dynamics compensation involves the modulation of the co-contraction of proximal and distal antagonistic muscles that change limb stiffness. | |
| 653 | |a Kinematics | ||
| 653 | |a Muscular function | ||
| 653 | |a Gravity | ||
| 653 | |a Muscles | ||
| 653 | |a Principal components analysis | ||
| 653 | |a Electromyography | ||
| 653 | |a Motor task performance | ||
| 653 | |a Limbs | ||
| 653 | |a Motion capture | ||
| 653 | |a Redundancy | ||
| 653 | |a Biomechanics | ||
| 653 | |a Viscosity | ||
| 653 | |a Nervous system | ||
| 653 | |a Musculoskeletal system | ||
| 653 | |a Muscle contraction | ||
| 653 | |a Hypotheses | ||
| 653 | |a Complexity | ||
| 653 | |a Muscle function | ||
| 653 | |a Spinal cord | ||
| 653 | |a Posture | ||
| 653 | |a Activity patterns | ||
| 653 | |a Environmental | ||
| 700 | 1 | |a Gritsenko, Valeriya | |
| 773 | 0 | |t PLoS One |g vol. 20, no. 4 (Apr 2025), p. e0322092 | |
| 786 | 0 | |d ProQuest |t Health & Medical Collection | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3198104526/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text |u https://www.proquest.com/docview/3198104526/fulltext/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3198104526/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |