Suppose we present a weak,brief stimulus that an observer does not perceive consciously.What happens if we gradually increase the stimulus from one trial to the next?
A) Either activity spreads widely in the brain or it does not. Intermediates do not occur.
B) For stronger stimuli, activity gradually spreads to more and more of the brain.
C) For stronger stimuli, action potentials gradually travel faster and faster.
D) For stronger stimuli, activity gradually persists longer and longer in the brain.
Correct Answer:
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