Brain Jogger “Why should we learn about other people’s religions?” Discuss with a neighbor. 1. 2. 3.
The Brain Discuss the use of brain imaging technologies in investigating the relationship between...
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![Page 1: The Brain Discuss the use of brain imaging technologies in investigating the relationship between biological factors and behavior.](https://reader033.fdocuments.us/reader033/viewer/2022061305/55143024550346dd488b5f54/html5/thumbnails/1.jpg)
The BrainDiscuss the use of brain imaging technologies in investigating the relationship between biological factors and behavior.
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Modern technology and localization of function
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Electroencephalogram (EEG)
• Developed in 1929 by Hans Berger
• Electrodes are placed on the outside of the head using a special cap or helmet.
• Detect electrical activity in the brain.
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Electroencephalogram (EEG)
• Most widely used in sleep research.
• It can measure what stage of sleep you are in.
• 1st, 2nd, 3rd, 4th
• REM (Rapid Eye Movement)
• Not that accurate in research showing us localization of function.
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Computed Tomography
• Combines computer and x-ray technology.
• Images are taken from all sides and look like slices of the brain.
• GREAT for showing structural changes in the brain (like a tumor).
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Magnetic Resonance Imaging (MRI)• Our bodies are about 60%
water H2O.• Uses a strong magnetic field
to push one proton of the H2O off its orbit.
• When magnetic pulse stops…the proton rushes back to its orbit.
• It emits a small radio frequency on its way back.
• The machine can detect that radio frequency..taking a picture of it.
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Magnetic Resonance Imaging (MRI)
• Normally much more safe that CT scan.
• But REALLY bad it you have metal inside of you….
• Very precise images from any angle.
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Functional MRI (fMRI)
• Uses MRI technology but takes pictures of only active areas (areas with more blood).
• Great for showing brain activity.
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Positron Emission Tomography (PET)
• Inject a radioactive substance in an individual.
• Usually some radioactive sugar that produces gamma rays.
• When the brain metabolizes (burns) the sugar, the PET machine will measure it.
• Great diagnostic tool for showing abnormalities in brain activity.
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