of the brain. Option 3 is incorrect because the MRI procedure does not involve any radiation, but rather an analysis of magnetic fields.
QUESTION 20This type of stroke is caused by fatty tissue that has built up over years and then breaks free and becomes lodged in an artery of the brain.
QUESTION 21In an experiment researchers find that Eskimos find it easy to distinguish between pictures of two different penguins, but have greater difficulty in distinguishing between pictures of two different ostriches. Which theory of perception and pattern recognition can account for this finding the easiest?