Author
Babic, J., Öztop, Erhan, Kawato, M.
Publication Date
2016
Subject
Computational neuroscience, Motor control, Neurophysiology
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
2045-2322
Record ID
aa941ea0-54b1-4eae-9f35-da45687e10c9
Library Location
Computer Science
Date
2016
Notes
Slovenian Research Agency ; European Commission ; Japan Agency for Medical Research and Development,
Sample Text
The main role of the sensorimotor system of an organism is to increase the survival of the species. Therefore, to understand the adaptation and optimality mechanisms of motor control, it is necessary to study the sensorimotor system in terms of ecological fitness. We designed an experimental paradigm that exposed sensorimotor system to risk of injury. We studied human subjects performing uncon- strained squat-to-stand movements that were systematically subjected to non-trivial perturbation. We found that subjects adapted by actively compensating the perturbations, converging to movements that were different from their normal unperturbed squat-to-stand movements. Furthermore, the adapted movements had clear intrinsic inter-subject differences which could be explained by different adapta- tion strategies employed by the subjects. These results suggest that classical optimality measures of physical energy and task satisfaction should be seen as part of a hierarchical organization of optimality with safety being at the highest level. Therefore, in addition to physical energy and task fulfillment, the risk of injury and other possible costs such as neural computational overhead have to be considered when analyzing human movement.
DOI
10.1038/srep32868
Cilt
6
