Serrapilheira/ICTP-SAIFR Training Program in Quantitative Biology and Ecology
Author: Mateus Souza Silva
The referential of the coordinate system used by the motor control is a point under discussion until today in the biomechanical field. There are authors who consider the referential as inertial, but another system widely used in the literature is the joint coordinative system (JCS), which corresponds to a non-inertial referential in which the movement of a joint is planned based on the previous joint.
In order to verify which of these two referential better corresponds to the referential used by the motor control during the motion planning process, we will use the decomposition method into motion elements and compare it with the theoretical jerk minimization curve.
The data used in this project was provided by Liang et al. (2020) https://doi.org/10.1038/s41597-020-00627-7
The raw data was organized into 10 folders, one for each individual. Each individual performed a set of collections with different tasks that are divided into different files.
To perform the analyses in R it was necessary to convert the files from .c3d to .csv using a function I developed called c3d_to_csv.m, located in the folder fct.
In this project we use the movement element decomposition to enable comparison of the complex motion with the theoretical velocity profile related to the minimum jerk optimization.
For more details check the file Report_human_movement_referentials.pdf in the docs folder.
Project/
├── data/
│ ├── raw
| | ├── c3d
| | └── csv
│ └── processed
| └── filtered_data
| ├── inertial
| └── non_inertial
├── docs/
├── fct/
├── figures/
├── output/
├── R/
└── README.md
Inside docs you will find the .pdf report and its references in a .bib file
R libraries:
- dplyr
- ggplot2
- lme4
- pracma
- stringi
- signal