1. Which type of nerve fibers is unmyelinated?
A. (A) Aα fiber
B. (B) Aβ fiber
C. (C) Aδ fiber
D. (D) C fiber
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3. Which is not the function of the center/surround organization of the receptive field?
A. (A) contrast enhancement
B. (B) sensitivity enlargement
C. (C) signal sharpening
D. (D) contrast detection
2. Which stream of auditory system is responsible for speech production?
A. (A) ventral pathway
B. (B) dorsal pathway
C. (C) caudal pathway
D. (D) anterior pathway
1. Which stream of somatosensory system is responsible for object recognition?
A. (A) ventral pathway
B. (B) dorsal pathway
C. (C) caudal pathway
D. (D) anterior pathway
3. What is the relationship between odorants and their receptors?
A. (A) every odorant is coded by only one receptor
B. (B) every odorant activates all receptors
C. (C) the relationship between odorants and their receptors are not one-to-one
D. (D) none of above
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