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Absolute threshold in neuroscience, psychology, and psychophysics, is considered the lowest possible level of a detected stimulus.

According to the seventh edition of Psychology, Themes and Variations, absolute threshold is “ for a specific type of sensory input and is the minimum stimulus intensity an organism can detect ,” ( 120 ).

An example of this would be an odor test.

The least amount of the odorous object necessary to still make people smell the odor would be the absolute threshold.

So, absolute threshold is the least amount of what we can detect and respond to.

Thus, from this it can be concluded that the absolute minimum threshold is the measure of that lowest frequency that organisms still detect for a specific sensor.