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Created with Fabric.js 1.4.5 breakfast dinner lunch orange juice 120 mg caffeine of Plasticity & Brain Damage After brain injury occurs the undamaged areas of the brain will either reorganize or make up for the loss or deficit in other ways Regrowth of Axons Axon Sprouting Denervation Supersensitivity Types of Anatomical Changes: Increased Brain Stimulation Learning Based Behavioral Changes Reorganization involves healthy brain areas taking over for damaged areas. Reorganization Learning to emphasize your strengths or remaining capabilities after brain injury is another example of adaptability of the brain. In some cases a skill is not lost, but a lot of effort has to be put out in order to recover the skill. Increased brain stimulation involves diaschisis (decreased neuronal activity in neurons that survived damage. Decreased neuronal activity manifests in the form of deficits in behavior. Part of compensating for diaschisismeans increasing activity in the area opposite of the damaged brain area. Example: A man showing very little brain activity or response for 6 years had his thalamus electrically stimulated and eventually was able to feed himself and communicate fairly understandably. Regeneration of Axons is possible in the PNS, but NOT the CNS. Damaged axons cannot regrow in the adult mammal's brain and spinal cord. aka Collateral Sprouting results when an axon loses input into a cell and neurtotrophins are discharged that bring about new branches to be formed on the axons. Collateral sprouting can be a good or bad thing. If the sprouting axons is replacing info like the area its replacing.If the info is not like then the info isdifferent and gets in the way of recoveryand messes up with behavior. Denervation supersensitivity is doing more sensitivity with less. This response helps make up for decreased input due to brain damage. This response compensates for whatever brain area is is damaged by becoming ultra sensitive.
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