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Coherence in the 10- to 20-Hz frequency band between paired tibialis anterior muscle (TA) electromyographic recordings obtained in the swing phase of walking, which was taken as a measure of motor unit synchronization. It was significantly correlated with the degree of foot drop, as measured by toe elevation and ankle angle excursion in the first part of swing. Transcranial magnetic stimulation was used to elicit motor-evoked potentials (MEPs) in the TA. The amplitude of the MEPs at rest and their latency during contraction were correlated to the degree of foot drop. Spinal cord injured participants who exhibited a large foot drop had little or no MEP at rest in the TA muscle and had little or no coherence in the same muscle during walking. Gait speed was correlated to foot drop, and was the lowest in participants with no MEP at rest. The data confirm that transmission in the corticospinal tract is of importance for lifting the foot during the swing phase of human gait. <\/jats:p>","DOI":"10.1152\/jn.00382.2010","type":"journal-article","created":{"date-parts":[[2010,6,17]],"date-time":"2010-06-17T02:06:30Z","timestamp":1276740390000},"page":"1167-1176","source":"Crossref","is-referenced-by-count":110,"title":["Impaired Transmission in the Corticospinal Tract and Gait Disability in Spinal Cord Injured Persons"],"prefix":"10.1152","volume":"104","author":[{"given":"Dorothy","family":"Barth\u00e9lemy","sequence":"first","affiliation":[{"name":"Department of Exercise and Sport Sciences and Department of Neuroscience and Pharmacology;"},{"name":"School of Rehabilitation, Universit\u00e9 de Montr\u00e9al, Montreal, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Willerslev-Olsen","sequence":"additional","affiliation":[{"name":"Department of Exercise and Sport Sciences and 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