Posthumanism, related to transhumanism, is the belief, study, or promotion of the idea that the human form is self-limiting. Posthumanists seek to get beyond the natural bounds of the body. Posthumanists promote artificial intelligence, nanotechnology, biomachines, and other technologies whose goal it is to blur the distinction between humans and machines.
There is also the theory that the human brain can be biologically altered to use its percieved potential. At best, the actual cognitive functioning of the brain is limited. Bioengineers will attempt to utilize all of the 'grey matter'.