Kinesiology 1080A/B Lecture Notes - Lecture 2: Alpha Motor Neuron, Basal Ganglia, Hemiparesis

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 1080A/B
• Professor: Matthew Heath

Document Summary

Suppresses activity of an antagonist muscle when agonist active. Explains phenomenon such as walking or reaching. Final common path at the spinal cord produce muscular contraction. Extrafusal muscle fibers are the fibers that actually contract. Intrafusal muscle fibers lie inside extrafusal and provide positional information. Older adults have a diminished reflex loop. Structural mri looking at parts of brain and where lesions are. Functional mri looks at what parts of the brain are active. Right side of brain controls left side of the body and vice versa. Look at where hemiparesis and the brain legion is on the opposite side. Examined whole body movements and developed experimental approaches to understanding how we learn to produce complex movements. 2 divisions: central nervous system (brain and spine), peripheral nervous system (autonomic and somatic nervous systems) Somatic nervous system gets information from intrafusal muscle fibres.