| Autor: |
Jocelyn L Bowden, Janet Louise Taylor, Penelope A Mcnulty |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Frontiers in Neurology, Vol 5 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1664-2295 |
| DOI: |
10.3389/fneur.2014.00239 |
| Popis: |
Objective: Measurement of voluntary activation gives an indication of neural drive to the muscle. This study aimed to identify the site of impairment in neural drive during voluntary contractions post-stroke. Methods: Elbow-flexor voluntary activation was assessed bilaterally for 10 stroke patients (mean 61.2±12.3 years) and 6 age-matched controls (61.3±14.0 years) by stimulating either the peripheral nerve or the motor cortex during maximal voluntary contractions. Any additional evoked force during maximal contractions implies neural drive is incomplete. Peripheral stimulation can detect deficits at or above the stimulation level, while cortical stimulation can identify suboptimal supraspinal output. Results: Impairments were apparent on the less-affected side in addition to the more-affected side after stroke in voluntary activation, torque and EMG response. Maximal torque was reduced by 44% on the more-affected and 31% on the less-affected side compared to healthy controls (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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