Final answer:
Magnocellular cells, associated with rods in the retina, do not participate in color vision. They are involved in processing visual information about form, movement, depth, and brightness changes but cannot detect color, which is the function of cones within the parvocellular pathway.
Step-by-step explanation:
Magnocellular cells are part of the visual system in the retina and are closely related to rod cells. These cells are involved in processing visual information pertaining to form, movement, depth, and changes in brightness. Notably, rods do not provide color vision, which is why magnocellular cells are not associated with this aspect of vision either. In conditions of low light, rods still enable the detection of light and motion, allowing us to see in greyscale but not in color.
Therefore, the correct answer to which function magnocellular cells are not involved in is color vision. Mangoconial cells are indeed tied to rods, which are sensitive to low levels of light and do not detect color but instead capture shades of grey. Rods, and thus magnocellular pathways, are adept at handling response to moving stimuli and capture the essence of motion detection in dim conditions.