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Does use of a myoelectric prosthesis prevent cortical reorganization and phantom limb pain?

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Abstract

Injury, stimulation or training can induce changes in the homuncular organization of primary somatosensory (S1) and motor cortex (M1)1,2,3,4,5,6. Phantom limb pain was identified as a perceptual correlate of this cortical reorganization2,7. Using functional magnetic resonance imaging (fMRI), we found that enhanced use of a myoelectric prosthesis in upper extremity amputees was associated with reduced phantom limb pain and reduced cortical reorganization. Extensive use of a myoelectric prosthesis might have beneficial effects on phantom limb pain.

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Figure 1: Procedure used to determine fMRI displacement in M1 and S1.
Figure 2: Lip representation in controls and upper limb amputated patients.

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Acknowledgements

This study was supported by BMBF, DFG and the Volkswagen-Stiftung.

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Correspondence to M. Lotze.

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Lotze, M., Grodd, W., Birbaumer, N. et al. Does use of a myoelectric prosthesis prevent cortical reorganization and phantom limb pain?. Nat Neurosci 2, 501–502 (1999). https://doi.org/10.1038/9145

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  • DOI: https://doi.org/10.1038/9145

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