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Updated: Jun 27, 2026

Calcium Imaging in Mouse Superior Colliculus
10:43

Calcium Imaging in Mouse Superior Colliculus

Published on: April 21, 2023

On the importance of the transient visual response in the superior colliculus

Susan E Boehnke1, Douglas P Munoz

  • 1Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.

Current Opinion in Neurobiology
|December 9, 2008
PubMed

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Color Vision

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