Howtosignalprocessing
- What are the processes of vision?
- What is the order of visual processing?
- How is vision processed in the brain?
- What are the stages of visual perception?
What are the processes of vision?
When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals. These electrical signals travel from the retina through the optic nerve to the brain. Then the brain turns the signals into the images you see.
What is the order of visual processing?
Visual processing and, ultimately, visual fields begin in the retina. Light enters the eye; passes through the cornea, anterior chamber, lens, and vitreous; and finally reaches the photoreceptor cells of the retina.
How is vision processed in the brain?
Visual information from the retina is relayed through the lateral geniculate nucleus of the thalamus to the primary visual cortex — a thin sheet of tissue (less than one-tenth of an inch thick), a bit larger than a half-dollar, which is located in the occipital lobe in the back of the brain.
What are the stages of visual perception?
Abstract. Three stages of visual processing determine how internal noise appears to an external observer: light adaptation, contrast gain control and a postsensory/decision stage.
