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Color Vision definitions

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  • Trichromatic Theory
    Explains initial color detection in the retina using three cone types sensitive to red, green, and blue wavelengths.
  • Opponent-Process Theory
    Describes how color pairs are processed by opponent cells in the nervous system, accounting for phenomena like afterimages.
  • Cone
    Photoreceptor in the retina specialized for detecting specific wavelength ranges, enabling color vision.
  • Retina
    Light-sensitive layer at the back of the eye where initial color detection and visual processing begin.
  • Wavelength
    Physical property of light that determines perceived color, with different cones sensitive to specific ranges.
  • Afterimage
    Visual illusion where the complementary color appears after staring at a colored image and then looking away.
  • Opponent Cell
    Neuron in the nervous system that responds to one color in a pair while being suppressed by its opposite.
  • Visual Cortex
    Brain region that interprets neural signals from the eyes, constructing the perception of color.
  • Color Pair
    Set of two colors, such as red-green or blue-yellow, processed in opposition by specific neural mechanisms.
  • Neural Impulse
    Electrical signal transmitted by neurons, underlying the activation and suppression in color processing.
  • Sensation
    Early stage of visual processing involving detection of light and color before interpretation by the brain.
  • Perception
    Process by which the brain organizes and interprets sensory input, resulting in meaningful color experience.
  • Photoreceptor
    Specialized cell in the eye that converts light into neural signals, essential for vision.
  • Pattern Recognition
    Higher-level cognitive process where the brain identifies and interprets visual information beyond basic color.
  • Visual Field
    Total area in which objects can be seen as the eyes focus on a central point.