According to the passage, which of the following is true of the visual system? It processes visual signals in three consecutive stages. It processes visual signals through separate processing systems in the brain. It consists of only three separate systems. It consists of a single hierarchical system rather than a multipartite system. It consists of separate system with high overlap in processing functions.
The author mentions a "black-and- white photograph" (lines 43-44) most probably in order to explain how the parvo system distinguishes between different shapes and colors how the magno system uses luminosity to identify borders between objects the mechanism that makes the magno system color-blind why the magno system is capable of perceiving moving images the brightness ratio at which colors become indistinguishable to the parvo system
