week_9_motor3 - How Do We Move Our Body I Week 9 Lecture 1...

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HD 220 Fall 2006 1 Temple, 2006 1 How Do We Move Our Body? – I Week 9, Lecture 1 Temple, 2006 2 Outline for today Movement and movement structures – Motor Cortices – Spinal cord and Motor neurons Clinical disorders: para and quadra plegia – Basal ganglia Clinical disorders: Parkinson’s, Huntington’s, Tourettes – Cerebellum Clinical disorders: ataxia, autism Temple, 2006 3 Movement
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HD 220 Fall 2006 2 Temple, 2006 4 Motor Structures Frontal cortex • (Brainstem) Spinal cord Motor neurons • Muscles Basal ganglia • Cerebellum Temple, 2006 5 Movement & Frontal Cortex Temple, 2006 6 Motor Cortex Maps Primary motor cortex – “map” of body • Homunculus proportional to amount of movement
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HD 220 Fall 2006 3 Temple, 2006 7 Homunculus of Different Species Temple, 2006 8 Movement & Frontal Cortex Temple, 2006 9 Premotor Cortex
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HD 220 Fall 2006 4 Temple, 2006 10 Increasingly Complex Movement Temple, 2006 11 Motor Structures Frontal cortex – Primary, pre-motor, and supplementary cortices Parts of cortex that plan and control movement • (Brainstem) Spinal cord Motor neurons • Muscles Basal ganglia • Cerebellum Temple, 2006 12 Brainstem Stimulation
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HD 220 Fall 2006 5 Temple, 2006 13 Motor Structures Frontal cortex – Primary, pre-motor, and supplementary cortices Parts of cortex that plan and control movement • (Brainstem) Spinal cord Motor neurons • Muscles Basal ganglia • Cerebellum Temple, 2006 14 Spinal Cord Spinal Cord – Pathways for motor information – Parallel pathways Different muscles Different types of movement – Main pathway Corticospinal tract Cortex to spinal cord Temple, 2006 15 Movement and the Spinal Cord Spinal cord Final common pathway Spinal cord reflexes Processing in cord w/o cortex
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