Stable Cortical Body Maps Before and After Arm Amputation
Hunter R Schone1,2,3,4, Roni O Maimon Mor1,5,6, Mathew Kollamkulam1,7
1Institute of Cognitive Neuroscience, University College London, London, UK.
Biorxiv : the Preprint Server for Biology
|January 3, 2024
Summary
Adult brain reorganization after arm amputation is debated. New research shows stable cortical representations of hands and lips, suggesting amputation does not cause large-scale brain changes.
Area of Science:
- Neuroscience
- Neuroplasticity
- Brain Imaging
Background:
- The adult brain's ability to reorganize (neuroplasticity) after injury, like amputation, is a key area of research.
- Previous studies, including animal models, suggested significant cortical reorganization following limb loss.
Conclusions:
- Arm amputation does not induce widespread cortical reorganization in the adult brain.
- The adult brain maintains stable neural representations despite limb loss.
- This study provides critical evidence against large-scale cortical reorganization post-amputation.
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