Option 3 is incorrect because the mri procedure does

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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.
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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?
PYC3703/201 9 QUESTION 22 During visual perception, light energy is converted by the photoreceptors located at the back of the eye into another form of energy. What is this form of energy?
QUESTION 23 All the tiles on the floor in a room are usually the same size. Yet, when artists make a drawing of such a room with tiles they take texture gradient and relative size into account and will draw the tiles that are further away - - - - - to provide the impression of depth. 1. larger and further apart 2. the same size but closer together 3. the same size but further apart 4. smaller and closer together Answer: Option 4is correct. In order to create the illusion that the tiles are further away, an artist must draw them smaller and closer to one another so that they appear more distant than the tiles that are ‘nearer’ in the room. The illusion is based on the assumption (derived from experience) that things will

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