Lecture 16-Wiring of CNS and Somatosensory systems copy

Lecture 16-Wiring of CNS and Somatosensory systems copy -...

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Unformatted text preview: Today’s Lecture • Review Brain • Somatosensory System and Somatotopy • Introduce Motor Pathways • Plasticity of Somatotopic Organization • How Plasticity of Somatosensory System can Explain Phantom Limb Sensation QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. Reflex and Cerebellar Channels medulla Somatosensory Lemniscal Channel Somatosensory cortex spinal cord hand region foot region . Cortex . Dorsal root ganglia pons cerebellum midbrain hypothalamus thalamus Pituitary gland Olfactory bulb Spinal cord thalamus Somatosensory cortex medulla Dorsal root ganglion Spinal cord thalamus Somatosensory cortex medulla Dorsal root ganglion Homunculus which means “little man in the brain” grey matter mostly cell bodies of neurons white matter mostly myelinated axons Corpus callosum Motoneuron innervates muscle fiber Cortiospinal tract Pyramidal decussation Motor homunculus...
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This note was uploaded on 10/25/2010 for the course BIO 365R taught by Professor Draper during the Spring '08 term at University of Texas.

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Lecture 16-Wiring of CNS and Somatosensory systems copy -...

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