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An overview of various brain imaging techniques, including MRI, fMRI, PET Scans, and EEG. It also discusses the concept of hemisphere specialization and its implications for brain function, using examples from neuroscience and psychological research. The document also covers the advantages and disadvantages of each imaging technique and the role of brain plasticity in brain function.
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Digital MRI XXI
fMRI- Functional MRI First used to study human brain function in 1992 measures blood flow via the different magnetic properties of oxygen in your brain Uses – neuroscience and psychological research
Brain Imaging: PET Scan Positron Emission Tomography
Electroencephalogram (EEG)
One Brain or Two? Cerebral Hemispheres & Split Brain Theory
Ballerina Test
Left/Right Conflict Your LEFT brain wants to say the actual WORD Your RIGHT brain wants to recognize the COLOR
Brain Lateralization (Normal Brain) 2 halves allows for efficiency of brain tasks. Sex Differences? More males left handed Left/Right handed? 90% of us right handed Not all left handers process speech in their left hemisphere Brain hemispheres excel at certain functions/skills PET Scans
Brain Plasticity Ability to strengthen synapse connection & create new ones in the Central Nervous System. Hemisphere Removal Based on new experiences - Musicians/Athletes/Juggling? Brain Damage? Plasticity is limited!
oLargely conducted by Roger W. Sperry & Michael Gazzaniga oConducted first with animals oCats in a maze o1960s: Epileptic patients had the corpus callosum severed to treat seizures. Split Brain Studies
Gazzaniga & Split Brain Patient
Findings