Compare and contrast the various brain imaging methods. Describe how they work, and discuss their advantages and disadvantages.
What will be an ideal response?
Three important brain imaging methods are magnetic resonance imaging (MRI), positron emission tomography (PET), and functional magnetic resonance imaging (fMRI).
Medical professionals use MRI to generate a magnetic field that allows them to see inside the brain. MRIs are effective in diagnosing brain damage and tumors. An important advantage of MRIs is that they are not dangerous or invasive.
Using PET scans, researchers can measure blood flow to different parts of the brain. The more active a part of the brain is, the more blood it receives. The most serious disadvantage of these scans is that they require the subject to ingest a small amount of a radioactive substance, which can be dangerous.
Like an MRI, fMRI uses magnetic properties. Like a PET scan, fMRI measures blood flow activity in different parts of the brain. The advantages of fMRI are that the subject can perform a task during the scan and that no radioactive substance is required.
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Obesity is an eating disorder
Indicate whether the statement is true or false
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a. the superiority of implicit vs explicit measures of attitude b. attitudes as spontaneous feelings vs attitudes as deliberative cognitions c. attitudes as temporary constructions vs attitudes as evaluations from memory d. the superiority of open-ended vs closed-ended measures of attitude
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a) Asch b) Milgram c) Luchens d) Singer