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Structure - Structure Brain Imaging Techniques Localization...

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Structure Brain Imaging Techniques Localization of Function Hemispheric Asymmetry
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Brain Imaging Techniques Can experience effect the way the brain functions? If you learned to no longer fear a situation, what would be the physiological effect? “There is no magic, it is just magic when we don’t know what is going on.”
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Brain Imaging Techniques Phineas P. Gage (1823-1860) Railroad construction foreman who had a large iron rod driven completely through his head, destroying one or both of his brain’s frontal lobes. The damage resulted in behavioral and personality changes that were very profound. Phineas Gage influenced 19 th -century thinking about the brain and localization of function. First case suggesting that damage to specific regions of the brain might affect personality and behavior.
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Brain Imaging Techniques EEG ( electroencephalogram ) Recording of neural activity detected by electrodes. Records brain noise. PET ( positron-emission tomography ) Injecting radioactive isotopes. Increased activity results in different colors. MRI ( magnetic resonance imaging ) Radio frequencies are used. The nuclei in atoms of cells turn differently and vibrate differently when hit with different waves. Thus you can gear your scan towards specific cells in the body. CAT ( computed axial tomography ) Uses tomography; where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation.
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Brain Imaging Techniques EEG: MRI: PET: CAT:
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Localization of Function Localization of function : Specific regions perform different ( though overlapping ) tasks.
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