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In psychophysics the visual thresholds may refer to:

• Visual absolute threshold: the lowest level at which a stimulus can be detected by the eye.
• Visual recognition threshold: the level at which a stimulus can not only be detected but also recognised.
• Differential threshold the level at which an increase in a detected stimulus can be perceived, the minimum stimulus change that is visually detectable
• Visual terminal threshold: the level beyond which a stimulus is no longer detected.

• The minimum difference that can be detected between visual stimuli

• Achromatic interval (vision)
• Critical flicker fusion threshold

See alsoEdit

• Dark adaptation
• Johnson's Criteria
• Light adaptation
• Luminance
• Perceptual measures
• Retinal eccentricity
• Sensory adaptation
• Visual search

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