The just noticeable difference (JND), also known as the difference threshold, is the minimum level of stimulation that a person can detect 50 percent of the time. The absolute threshold for sound, for example, would be the lowest volume level that a person could detect.

Relative Brightness is a comparison of the brightness of any two objects. This can be done through a specific mathematical equation or simply looking at them and making a judgment.

Monocular Cues are used to help perceive depth by only using one eye. There are many types of cues for example; relative size, interposition, aerial perspective, linear perspective, texture gradient, and motion parallax. Artists use these cues to help portray depth in their work and create a more realistic creation.

From Wikipedia, the free encyclopedia. In psychophysics, sensory threshold is the weakest stimulus that an organism can detect. Unless otherwise indicated, it is usually defined as the weakest stimulus that can be detected half the time, for example, as indicated by a point on a probability curve.

(A threshold is the lowest point at which a particular stimulus will cause a response in an organism.) In human eye: Measurement of the threshold. An important means of measuring a sensation is to determine the threshold stimulus—i.e., the minimum energy required to evoke the sensation.

Here are a few examples of difference thresholds: The smallest difference in sound for us to perceive a change in the radio’s volume. The minimum difference in weight for us to perceive a change between two piles of sand. The minimum difference of light intensity for us to perceive a difference between two light bulbs.

C) the absolute threshold for any stimulus is a constant proportion.

Weber’s law. the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount). sensory adaptation. diminished sensitivity as a consequence of constant stimulation.