Absolute Thresholds, Difference Thresholds, Weber's Law, & Signal Detection Theory

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In this video we discuss some of the ways in which we detect the presence of, as well as changes in, sensory information in our environment. Using examples from auditory, visual, and taste modalities, we describe the following concepts:

Absolute Threshold: The minimum stimulus intensity required to detect that stimulus (approximately 50% of the time).

Difference Threshold: The minimum change in stimulus intensity required to detect that change (approximately 50% of the time).

Weber's Law: The Just Noticeable Difference (JND) of a stimulus will be proportional to the original stimulus intensity.

Signal Detection Theory: Our perception of a stimulus depends on the presence of sensory information, and our judgement regarding the presence of that stimulus.

Questions about anything covered in this video? Please feel free to leave us a comment!
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Your video is amazing, I could understand. Thank you!!

Lanarradoradelibros
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The best explanation about the topic. Thank you so much !

deepalipimpale
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Would you talk about subliminal perception and persuasion? Thank you in advance.

genefernandez
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good video. I have a doubt though. How does different threshold and jnd differ?

Julie