Prolonged exposure to movement in one direction the motion detectors responsive to that direction.When the movement stops,the baseline firing rate of detectors for the
Opposite direction of motion will be than the firing rate for the detectors that
Responded to the prolonged movement,leading to motion aftereffects.

A) sensitizes;higher
B) sensitizes;lower
C) fatigues;higher
D) fatigues;lower

Question

Prolonged exposure to movement in one direction ________ the motion detectors responsive to that direction.When the movement stops,the baseline firing rate of detectors for the
Opposite direction of motion will be ________ than the firing rate for the detectors that
Responded to the prolonged movement,leading to motion aftereffects.

A) sensitizes;higher
B) sensitizes;lower
C) fatigues;higher
D) fatigues;lower

Matthew Brown · Accepted Answer

Final Answer : C, Explanation :  Prolonged exposure to movement in one direction fatigues the motion detectors for that direction. When the movement stops, the baseline firing rate of detectors for the opposite direction will be higher than the firing rate for the detectors that responded to the prolonged movement, leading to motion aftereffects. This is why, for example, after looking at a waterfall for a while and then looking away, you might see stationary objects appear to move in the opposite direction.

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