Perceiving the Universe as it Really Is

Well, this is a pretty stunning thought:

Peeping through my keyhole I see within the range of only about thirty percent of the light that comes from the sun; the rest is infrared and some little ultraviolet, perfectly apparent to many animals, but invisible to me. A nightmare network of ganglia, charged and firing without my knowledge, cuts and splices what I do see, editing it for my brain. Donald E. Carr points out that the sense impressions of one-celled animals are not edited for the brain: “This is philosophically interesting in a rather mournful way, since it means that only the simplest animals perceive the universe as it is." [Annie Dillard, Pilgrim at Tinker Creek (1974), 19

I can't think it's true, though. The data perceived by a single-cellular-being may not be being processed in the ways that happen inside my brain, but it is surely being mediated.