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Inter-limb transfer of learned ankle movements
Tiffany Morris1, Nicki Ann Newby, Michael Wininger
1Department of Biomedical Engineering, Rutgers University, New Brunswick, NJ, USA. tiffm@eden.rutgres.edu
Experimental Brain Research
|October 3, 2008
Summary
This study explored inter-limb learning transfer in the lower limbs using ankle movements. Results show that learning with the left foot significantly transferred to the right, unlike learning with the right foot.
Area of Science:
- Neuroscience
- Motor Learning
- Biomechanics
Background:
- Inter-limb learning transfer (ILT) is established for upper limbs.
- No prior research investigated ILT in lower limbs using ankle movements.
Purpose of the Study:
- To investigate inter-limb learning transfer in the human lower limbs.
- To determine if learning with one ankle influences performance with the contralateral ankle.
Main Methods:
- Twenty-two healthy subjects performed a cursor-targeting task using ankle movements (plantar/dorsi-flexion, inversion/eversion).
- Subjects were divided into right-leg-first (RL) and left-leg-first (LR) groups.
- Tasks involved neutral and 30-degree visuomotor rotation conditions.
Main Results:
- The LR group showed significant ILT for both directional and positional errors.
- The RL group did not exhibit significant ILT.
- Differences in ILT were linked to the distinct functional roles of the lower limbs.
Conclusions:
- Inter-limb learning transfer in the lower limbs is asymmetric.
- Left-to-right leg transfer is more pronounced than right-to-left, potentially due to functional dominance.
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