31. Purple is perceived when the blue and red cone cells are stimulated but the green ones aren't. 32. The presence of cone cells indicates they can see colours, although this suggestion has not been confirmed. 33. In cone cells , there are different types of opsins that combine with retinal to form pigments called photopsins. 34. :It's not color until it is received by our cone cells and perceived by our color vision system. 35. The three types of cone cell respond ( roughly ) to light of short, medium, and long wavelengths. 36. In many day-flying species, light passes through coloured oil droplets within the cone cells to improve colour vision. 37. Your eye perceives color because ( most ) have at least 3 different types of color cone cells . 38. Perception of color begins with specialized retinal cells containing pigments with different spectral sensitivities, known as cone cells . 39. Somehow, the way this drug blocks the enzyme in the cone cells leads to the perception of blue, 40. Rod cells, which are concentrated further away from the fovea, operate better than cone cells in low light.
