PSYCH261 Lecture Notes - Lecture 8: Phantom Limb, Peripheral Nervous System, Central Nervous System
28 Nov 2015
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Document Summary
Axons can regenerate particularly in the peripheral nervous system. Central nervous system (very little movement in regeneration of axons) Cns (you get scar tissue that blocks the growth of the axon) Once the axons die, the cell body typically dies because it won"t get the proper neurotrophins, it will leave vacancy, and it will form collateral sprouting to fill in the empty space. Feeling sensation from the lost limb after amputated body part. When you cut off the limb, those axons are not being stimulated, those areas are taken over by other functions (stimulating the areas stimulates the phantom limb) After damage, it doesn"t mean that you can"t use/do it. Deafferenated limbs are limbs that have lost their afferent sensory input. The advantages of a light as a stimulus (travels quickly in fairly straight line) The electromagnetic spectrum (visible to humans 400-700 nanometers) Left side of the eye goes to the right side of the brain.
