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Stevens’ law: A psychophysical law that expresses a quantitative relationship between the intensity of a stimulus and the intensity of a sensation. in an exponential.

is an objective psychophysical law. expresses the quantitative correlation between the intensity of a stimulus on the one hand and the intensity of the sensation.

Bohr-Weber law or the law of the discriminative threshold: It is an objective psychophysical law. It expresses a person’s ability to distinguish between an added.

A minimal change in the intensity of the stimulus that is accompanied by a slight change in sensation.

– It is a disorder related to the function of visual perception, while color blindness is related to the function of visual perception.