Please see "A Foray into the Worlds of Animals and Humans" with a theory of meaning by Jakob Von Uexkull. He coined the terms Umwelt and Umgebung. The Umwelt is the particular reality or constructed model of the world that we call our particular existence, the Umgebung is the bigger or more general reality. Your "Umwelt" would be your particular model of reality and the theorhetical implication is that your reality has a sense of completeness to it.
For example most people have genes that code for three color differentiators, but some people have four and can discern additional hues of color. If you have 3 genes that code for average color perception do you have a sense that something is missing from your model of reality? The people that are born with congenital blindness do not ask what it is to have sight, so there is an important theoretical issue to explore with your question, since each constructed reality has a sense of completeness. A constructed reality appears to be perceptually closed and an Umwelt that defines a perimeter of perceptive possibility that cannot conceive of additional degrees of freedom of perception. Within the degrees of perceptive freedom there is a spacious variation of possible perceptions, but limited by the basic information type being perceived.
Conscious realities seem to be individually constructed of the informational degrees of freedom provided by the sense organs. Additional degrees of freedom are available in the Umgebung, human sight for example is only about 1 trillionth of the EM spectrum and among humans there is significant variation.