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Dexterous Manipulation Capabilities Are Associated With Change In Discharge Rate Properties Of Motor Neurons With Age, Mukta N. Joshi
Dexterous Manipulation Capabilities Are Associated With Change In Discharge Rate Properties Of Motor Neurons With Age, Mukta N. Joshi
Theses and Dissertations
Aging is accompanied by declines in manual dexterity and fine motor control. The purpose of this research was to compare hand motor control in young and older adults and examine the neuromuscular mechanisms responsible for enabling these interactions. We test force variability during isometric and dynamic contractions, manual dexterity and track motor unit activity to identify the neuromuscular mechanisms responsible for changes in dexterity with age. 26 older adults (66-86 years) and 28 young adults (19 – 38 years) participated in the study. Research participants performed force matching tasks during index finger abduction, precision pinch, static pressing and hybrid force/ …