Trichromatic colour vision, also known as normal colour vision, allows humans and some other animals to distinguish a wide range of colours due to the presence of three types of cone cells in the retina. Each types of cone cells is sensitive to a different range of wavelengths of light, corresponding roughly to blue, green, and red. The brain interprets the signals from these cones to create the perception of different colours.
- Each types of cone cells is sensitive to a different range of wavelengths of light, corresponding roughly to blue, green, and red.
- The brain interprets the signals from these cones to create the perception of different colours.
- There are three different types of cone cells in the human retina:
- S-cones: Most sensitive to short wavelengths (blue light)
- M-cones: Most sensitive to medium wavelengths (green light)
- L-cones: Most sensitive to long wavelengths (red light)
- When light enters the eye, it stimulates these cone cells according to the wavelengths it contains. The brain then receives signals from these cones and interprets their combination as specific colours.