Kinesiology 1080A/B Study Guide - Midterm Guide: Intrafusal Muscle Fiber, Alpha Motor Neuron, Upper Motor Neuron

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

Document Summary

Psychomotor behaviour testable content for midterm #2. Cerebral asymmetries in downs syndrome people with down syndrome perceive speech with right cerebral hemisphere; model of reversed cerebral specialization right side is not optimized for speech perception. 50% of people with down syndrome are left handed (90% of gen. population is right handed, 99% have speech & language lateralized to left hemisphere) In ds, problem with verbal-motive behaviours is thought to arise from right hemisphere speech perception & left hemisphere movement production model of biological dissociation. Rostral fifth is particularly thin, rf is important for between hemisphere communication (verbal) For people with ds, verbal instruction is very difficult; visual is much more effective overdeveloped mirror neuron system. Spinal cord connections with extrafusal muscle (diagram) golgi tendon organ sends information back to spinal cord (dorsal root) and synapses onto the interneuron which then synapses onto alpha motor.