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Muscles of Which Structure Regulate the Amount of Light Entering

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Muscles of which structure regulate the amount of light entering the eye?


Definitions:

Sensory Adaptation

The method through which sensory receptors decrease in sensitivity to unchanging stimuli as time progresses.

Synaesthesia

A perceptual condition in which stimulation of one sensory pathway leads to automatic, involuntary experiences in a second sensory pathway.

Subliminal Perception

The operation of sensory systems in handling information without the individual's conscious recognition.

Just-noticeable Difference

The smallest change in the intensity of a stimulus that can be detected by a sensory system, also known as the difference threshold.

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