Brain_Part3_Plasticity

Brain_Part3_Plasticity - together at lower thresholds –...

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Evidence that Experience Affects  the Brain: One of the fastest growing areas of  research in Neuroscience is in researching  neural  plasticity Plasticity  refers to the brains ability to  change in response to experience Plasticity can occur through one of 3 modes  of change: Structural Changes  Connective Changes
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Structural Changes Interacting in enriched environments and  learning new and specialized skills can  cause:  the generation of new neurons  the growth of existing neurons  increases in the production of  neurotransmitters All of which cause more efficient processing  and greater capacity for sensation,  perception, and computation
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Connective Changes Learning can also cause changes in the  brain by strengthening or weakening  synaptic connections The more often neurons fire together, the  more likely they are to develop strong  synaptic connections such that they will fire 
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Unformatted text preview: together at lower thresholds – The opposite occurs in development: Synapses that do not fire together are weened away to devote resources to Regeneration & Compensation • Brain regions on the right side of the brain that are symmetrical to Broca’s & Wernicke’s area on the left side can be recruited to preserve language functioning in stroke patients who have damage to the dominant left-side areas • In blind individuals, regions of the right occipital lobe (usually devoted to 3-D vision) are recruited to aid perception of where sounds are coming from in 3-D • http://www.learner.org/resources/series138.html? • http://www.youtube.com/watch?v=JsWsaE9aRhQ • http://www.youtube.com/watch?v=TSu9HGnlMV0 • http://www.youtube.com/user/Hemiadvocate#p/a /u/1/NInxZIaYPlk...
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Brain_Part3_Plasticity - together at lower thresholds –...

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