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Richard has been under great stress and has complained of migraine headaches for weeks. He tried all kinds of drugs, with little effect. When he was at the end of his rope, a friend suggested yoga and meditation. Having nothing to lose, he tried them and after several months, felt like a new person. How could these practices help him?
Absolute Threshold
The minimum amount of sensory stimulation that can be detected 50% of the time.
Difference Threshold
A measure of the smallest increase or decrease in a physical stimulus that is required to produce a difference in sensation that is noticeable 50% of the time.
Psychophysical Threshold
The minimum level of stimulus intensity perceived by the sensory system.
Just Noticeable Difference
The smallest difference in stimulation required to detect a change in sensory inputs, also known as the difference threshold.
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