Kinesiology 1080A/B Lecture Notes - Lecture 29: Motor Program, Agonist, Anti-Gravity
16 Oct 2018
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Motor control used to move and lacks sensory feedback, error detection or correction mechanisms: can reach for the water bottle just by knowing where it is. Don"t need vision etc : closed loop motor control: requires sensory feedback to be controlled. Ballistic (really fast) and well learned actions. Rothwell experiment: studied dorsal root lesions from getting a virus. Cluster of neurons in brainstem that allow us to control rhythmic, open looped, stereotyped actions. Neuron requires mechanical input (when on a treadmill, it is the foot dragging on the treadmill: cascade activated and activates extensors, flexors, etc . If treadmill turned off, cascade neurons not getting stimulus required for activation and therefore stops activity: produces rhythmic movement without higher centres. Baby hannah video: baby who has never walked before, put on a treadmill and starts to move legs: excited cascade neuron. Lab for tetra and quadriplegic spinal cord injuries.
