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Thresholds
§Absolute Threshold: Minimum stimulation needed to detect a particular stimulus 50% of the time.
Proportion of “Yes” Responses
0.00                 0.50                1.00
             0            5            10           15          20          25
                           Stimulus Intensity (lumens)
OBJECTIVE 12-2| Distinguish between absolute and difference thresholds, and discuss whether we can sense stimuli below our absolute thresholds and be influenced by them.