The CNS Stochastically Selects Motor Plan Utilizing Extrinsic and Intrinsic Representations
Author Information
Author(s): Jindrich Kodl, Ganesh Gowrishankar, Etienne Burdet
Primary Institution: Imperial College of Science, Technology and Medicine
Hypothesis
What factors influence the development and selection of motor plans performed by the CNS?
Conclusion
The study shows that the central nervous system selects from multiple motor plans based on previous movements and both intrinsic and extrinsic constraints.
Supporting Evidence
- The CNS selects from multiple motor plans based on previous movements.
- Subjects were found to switch randomly between different trajectories.
- Exploration of a specific solution influenced the choice of subsequent solutions.
Takeaway
The brain can choose from different ways to move based on what it has done before and the rules of the body.
Methodology
Subjects performed a via-point task with different orientations and setups while their movements were recorded and analyzed.
Potential Biases
Subjects were unaware of their planning strategies, which may affect the results.
Limitations
The study involved a small sample size and only right-handed subjects.
Participant Demographics
13 right-handed subjects (2 females), aged 21-30, without known pathology.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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