A single eyelash lands on Neil's hand, but because the pressure is __________________, he does not notice it
A) above the difference threshold
B) below the difference threshold
C) above the absolute threshold.
D) below the absolute threshold.
Answer: D
Rationale: The absolute threshold is the minimum amount of energy, or quantity of a stimulus required for it to be reliably detected at least 50% of the time it is presented. In contrast, a difference threshold is the smallest detectable difference between two stimuli.
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