Examlex
Neurons that are at rest are still electrically charged.
Light
Electromagnetic radiation within a certain portion of the electromagnetic spectrum, perceived by the human eye as brightness of varying wavelengths and colors.
Cornea
The transparent front part of the eye that covers the iris, pupil, and anterior chamber, contributing to the eye's ability to focus light.
Lens
A curved piece of glass or other transparent materials used to refract light, focus images, and aid vision or in photography.
Feature Detectors
Neurons in the brain that respond only to specific visual patterns (for example, to lines or angles).
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