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Altered supraspinal motor networks in survivors of poliomyelitis: A cortico-muscular coherence study |
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| Institution: | 1. Academic Unit of Neurology, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland;2. Department of Neurology, University Medical Centre Utrecht Brain Centre, Utrecht University, Utrecht, the Netherlands;3. Section of Movement disorders and Neurostimulation, Biomedical Statistics and Multimodal Signal Processing Unit, Department of Neurology, Johannes-Gutenberg-University Hospital, Mainz, Germany;4. Trinity College Institute of Neuroscience and School of Psychology, Trinity College Dublin, the University of Dublin, Ireland;5. School of Psychology, Queen’s University Belfast, Northern Ireland, UK;6. School of Electrical and Electronic Engineering, University College Dublin, Dublin, Ireland;7. Beaumont Hospital, Beaumont Road, Dublin 9, Ireland |
| Abstract: | ObjectivePoliomyelitis results in changes to the anterior horn cell. The full extent of cortical network changes in the motor physiology of polio survivors has not been established. Our aim was to investigate how focal degeneration of the lower motor neurons (LMN) in infancy/childhood affects motor network connectivity in adult survivors of polio.MethodsSurface electroencephalography (EEG) and electromyography (EMG) were recorded during an isometric pincer grip task in 25 patients and 11 healthy controls. Spectral signal analysis of cortico-muscular (EEG-EMG) coherence (CMC) was used to identify the cortical regions that are functionally synchronous and connected to the periphery during the pincer grip task.ResultsA pattern of CMC was noted in polio survivors that was not present in healthy individuals. Significant CMC in low gamma frequency bands (30–47 Hz) was observed in frontal and parietal regions.ConclusionThese findings imply a differential engagement of cortical networks in polio survivors that extends beyond the motor cortex and suggest a disease-related functional reorganisation of the cortical motor network.SignificanceThis research has implications for other similar LMN conditions, including spinal muscular atrophy (SMA). CMC has potential in future clinical trials as a biomarker of altered function in motor networks in post-polio syndrome, SMA, and other related conditions. |
| Keywords: | EEG EMG Poliomyelitis Corticomuscular coherence ADM"} {"#name":"keyword" "$":{"id":"k0030"} "$$":[{"#name":"text" "_":"abductor digiti minimi APB"} {"#name":"keyword" "$":{"id":"k0040"} "$$":[{"#name":"text" "_":"abductor pollicis brevis APL"} {"#name":"keyword" "$":{"id":"k0050"} "$$":[{"#name":"text" "_":"abductor pollicis longus CMC"} {"#name":"keyword" "$":{"id":"k0060"} "$$":[{"#name":"text" "_":"corticomuscular coherence DFT"} {"#name":"keyword" "$":{"id":"k0070"} "$$":[{"#name":"text" "_":"discrete Fourier transform EDC"} {"#name":"keyword" "$":{"id":"k0080"} "$$":[{"#name":"text" "_":"extensor digitorum communis EEG"} {"#name":"keyword" "$":{"id":"k0090"} "$$":[{"#name":"text" "_":"electroencephalography EMG"} {"#name":"keyword" "$":{"id":"k0100"} "$$":[{"#name":"text" "_":"electromyography EPB"} {"#name":"keyword" "$":{"id":"k0110"} "$$":[{"#name":"text" "_":"extensor pollicis brevis FDI"} {"#name":"keyword" "$":{"id":"k0120"} "$$":[{"#name":"text" "_":"first dorsal interosseous FDR"} {"#name":"keyword" "$":{"id":"k0130"} "$$":[{"#name":"text" "_":"false discovery rate FDS"} {"#name":"keyword" "$":{"id":"k0140"} "$$":[{"#name":"text" "_":"flexor digitorum superficialis FPB"} {"#name":"keyword" "$":{"id":"k0150"} "$$":[{"#name":"text" "_":"flexor pollicis brevis FDMB"} {"#name":"keyword" "$":{"id":"k0160"} "$$":[{"#name":"text" "_":"flexor digiti minimi brevis LMN"} {"#name":"keyword" "$":{"id":"k0170"} "$$":[{"#name":"text" "_":"lower motor neuron MRC"} {"#name":"keyword" "$":{"id":"k0180"} "$$":[{"#name":"text" "_":"medical research council MVC"} {"#name":"keyword" "$":{"id":"k0190"} "$$":[{"#name":"text" "_":"maximum voluntary contraction PPS"} {"#name":"keyword" "$":{"id":"k0200"} "$$":[{"#name":"text" "_":"post polio syndrome SMA"} {"#name":"keyword" "$":{"id":"k0210"} "$$":[{"#name":"text" "_":"spinal muscular atrophy |
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