Oscillatory Corticospinal Activity during Static Contraction of Ankle Muscles Is Reduced in Healthy Old versus Young Adults
Joint Authors
Geertsen, Svend Sparre
Nielsen, Jens Bo
Spedden, Meaghan Elizabeth
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-26
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Aging is accompanied by impaired motor function, but age-related changes in neural networks responsible for generating movement are not well understood.
We aimed to investigate the functional oscillatory coupling between activity in the sensorimotor cortex and ankle muscles during static contraction.
Fifteen young (20–26 yr) and fifteen older (65–73 yr) subjects were instructed to match a target force by performing static ankle dorsi- or plantar flexion, while electroencephalographic (EEG) activity was recorded from the cortex and electromyographic (EMG) activity was recorded from dorsi- (proximal and distal anterior tibia) and plantar (soleus and medial gastrocnemius) flexor muscles.
EEG-EMG and EMG-EMG beta band (15–35 Hz) coherence was analyzed as an index of corticospinal activity.
Our results demonstrated that beta cortico-, intra-, and intermuscular coherence was reduced in old versus young subjects during static contractions.
Old subjects demonstrated significantly greater error than young subjects while matching target forces, but force precision was not related to beta coherence.
We interpret this as an age-related decrease in effective oscillatory corticospinal activity during steady-state motor output.
Additionally, our data indicate a potential effect of alpha coherence and tremor on performance.
These results may be instrumental in developing new interventions to strengthen sensorimotor control in elderly subjects.
American Psychological Association (APA)
Spedden, Meaghan Elizabeth& Nielsen, Jens Bo& Geertsen, Svend Sparre. 2018. Oscillatory Corticospinal Activity during Static Contraction of Ankle Muscles Is Reduced in Healthy Old versus Young Adults. Neural Plasticity،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1210030
Modern Language Association (MLA)
Spedden, Meaghan Elizabeth…[et al.]. Oscillatory Corticospinal Activity during Static Contraction of Ankle Muscles Is Reduced in Healthy Old versus Young Adults. Neural Plasticity No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1210030
American Medical Association (AMA)
Spedden, Meaghan Elizabeth& Nielsen, Jens Bo& Geertsen, Svend Sparre. Oscillatory Corticospinal Activity during Static Contraction of Ankle Muscles Is Reduced in Healthy Old versus Young Adults. Neural Plasticity. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1210030
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1210030