The brain scanning technique that offers the most hope for understanding disorders such as amnesia and dyslexia is ______
a. magnetic resonance imaging (MRI)
b. magnetoencephalography (MEG)
c. positron emission tomography (PET) scanning
d. electroencephalography (EEG) imaging
b
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In an electroencephalogram (EEG),
A) the person lies inside a tunnel-shaped apparatus that creates a magnetic field. B) the person inhales or is given an injection of a radioactive substance, and then lies on an apparatus with a scanner that emits fine streams of X-rays. C) brain-wave patterns are examined for stability and organization—signs of mature cortical functioning. D) when an individual is exposed to a stimulus, the EEG detects changes in blood flow and oxygen metabolism throughout the brain magnetically.
In the United States in the 1970s, the average hospital stay for a normal birth was _____ days
a) 2.0 b) 3.9 c) 4.5 d) 5.0