Visual Definition and 215 Threads

The visual system comprises the sensory organ (the eye) and parts of the central nervous system (the retina containing photoreceptor cells, the optic nerve, the optic tract and the visual cortex) which gives organisms the sense of sight (the ability to detect and process visible light) as well as enabling the formation of several non-image photo response functions. It detects and interprets information from the optical spectrum perceptible to that species to "build a representation" of the surrounding environment. The visual system carries out a number of complex tasks, including the reception of light and the formation of monocular neural representations, colour vision, the neural mechanisms underlying stereopsis and assessment of distances to and between objects, the identification of particular object of interest, motion perception, the analysis and integration of visual information, pattern recognition, accurate motor coordination under visual guidance, and more. The neuropsychological side of visual information processing is known as visual perception, an abnormality of which is called visual impairment, and a complete absence of which is called blindness. Non-image forming visual functions, independent of visual perception, include (among others) the pupillary light reflex (PLR) and circadian photoentrainment.
This article mostly describes the visual system of mammals, humans in particular, although other animals have similar visual systems (see bird vision, vision in fish, mollusc eye, and reptile vision).

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  1. D

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    Hi everyone I am using Visual Studio Code with Node.js 18.17.1. I installed Puppeteer 22.5.0 with the following command: Npm install browserify -g I tried creating a bundle with the following command: Browserify index.js -o bundle.js This error message came up: Error: Can't walk...
  2. BillTre

    Review of Drosophila Visual Processing

    Here is an open access review of visual processing in the fruitfly nervous system. It will give you an overview of what is known about how the nervous system extracts relevant information from its visual inputs. Fruit flies (Drosophila) are a very tractable research organism in which...
  3. A

    Medical Exploring Sensations in the Visual Cortex for the Blind

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  4. AJSayad

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  5. M

    Python Executing Specific Python Lines in VS Code on Ubuntu

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  6. M

    Help on Learning Quantum Mechanics (Undergraduate)

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  7. R

    Resetting PC & Visual Studio Code - Need Help!

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  8. M

    I Visual Interpretation of Advanced Electrodynamics

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  9. L

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  10. SamRoss

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  11. K

    New car headlights -- Visual issues with oncoming cars

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  12. anorlunda

    Can Storm Chasing be Considered a Form of Nature Appreciation?

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  13. P

    I Exploring Cathode Rays & Anodes: A Visual Guide

    The attached diagram shows the cathode rays moving in straight lines forward but the anode is beneath them?
  14. N

    Draw a rectangle that gives a visual representation of the problem

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  15. D.S.Beyer

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  16. Eagle9

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  17. Discordy

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  18. Y

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  19. B

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  20. kyphysics

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  21. Wrichik Basu

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  22. LCKurtz

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  23. S

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  24. R

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  25. B

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  26. D

    I Favorite Visualization of General Relativity?

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  27. A

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  28. Arman777

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  29. T

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  30. Drakkith

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  31. R

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  32. J

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  33. kyphysics

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  34. R

    B Visual Effects of Light Travel: Analyzing "Journey to Edge of Universe

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  35. Graeme M

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  36. A

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  37. T

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  38. M

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  39. P

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  40. D

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  41. berkeman

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  42. C

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  43. mgkii

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  44. Tareq Naushad

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  45. parshyaa

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  46. Alfreds9

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  47. Guidestone

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  48. LtIvan

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  49. J

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  50. MathematicalPhysicist

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