Human Cone Cell Spectral Sensitivity Chart - Visual Perception Science #1368812 (License: Personal Use)

The plot displays normalized intensity counts versus wavelength in nanometers, highlighting the overlapping sensitivity curves of short (S), medium (M), and long (L) wavelength-sensitive cones. The blue peak (~420 nm) corresponds to S-cones, the green peak (~534 nm) to M-cones, and the yellow-red peak (~564 nm) to L-cones-forming the basis of trichromatic color vision. Noise and minor dips reflect real-world measurement variability in psychophysical or electrophysiological data.

Used in vision science, optometry, and color theory educational content; supports articles on human color perception, display calibration, or retinal physiology. Matches user intent seeking technical explanations of how eyes detect color.