What is the peak photoreceptor absorption spectra of a M cone?

The peak photoreceptor absorption spectrum of a M cone, which is one of the types of cone photoreceptors responsible for color vision, is aligned with green light. Specifically, the M cones have a peak sensitivity around 530 nm within the visible spectrum. This wavelength corresponds to the green region, which is crucial for our ability to perceive various colors, particularly those in the middle of the spectrum.

Understanding the absorption spectra of M cones is vital for recognizing how our visual system interprets color and distinguishes among the different wavelengths of light. The ability to perceive red and green light accurately depends significantly on the functioning of M cones, and their peak sensitivity at around 530 nm plays a pivotal role in this process.