Abstract：
:The combined effects of cervical electrical stimulation alone or in combination with the monoaminergic agonist buspirone on upper limb motor function were determined in six subjects with motor complete (AIS B) injury at C5 or above and more than one year from time of injury. Voluntary upper limb function was evaluated through measures of controlled hand contraction, handgrip force production, dexterity measures, and validated clinical assessment batteries. Repeated measure analysis of variance was used to evaluate functional metrics, EMG amplitude, and changes in mean grip strength. In aggregate, mean hand strength increased by greater than 300% with transcutaneous electrical stimulation and buspirone while a corresponding clinically significant improvement was observed in upper extremity motor scores and the action research arm test. Some functional improvements persisted for an extended period after the study interventions were discontinued. We demonstrate that, with these novel interventions, cervical spinal circuitry can be neuromodulated to improve volitional control of hand function in tetraplegic subjects. The potential impact of these findings on individuals with upper limb paralysis could be dramatic functionally, psychologically, and economically.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Freyvert Y,Yong NA,Morikawa E,Zdunowski S,Sarino ME,Gerasimenko Y,Edgerton VR,Lu DCdoi
10.1038/s41598-018-33123-5subject
Has Abstractpub_date
2018-10-19 00:00:00pages
15546issue
1issn
2045-2322pii
10.1038/s41598-018-33123-5journal_volume
8pub_type
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