Compare to green light wavelength, red light is a less effective stimulus for rods. Therefore, rods respond to red light in a similar way as in the dark. Rod vision is more sensitive than cone vision. Rod vision has lower acuity than cone vision. Only one kind of rod compare to three cones preferring different wavelength.
Rods are larger in size than cones.
Rod is mainly in the periphery and absent from the fovea. High spatial frequencies. Fine spatial details contain more high frequencies components than low frequency components. When a sinusoid goes into a linear system, it emerges as another sinusoid. Describe one piece of experimental evidence that the human CSF is the envelope of multiple channels, rather than representing just a single channel.