Quantum Consciousness Von Neumann introduced an "ontological" approach to this knowledge-based discipline, which brought the observer and the instrument in the state of the system. Stapp describes Von Neumann's view of Quantum Theory through a simple definition: "the state of the universe is an objective compendium of subjective knowings". This statement describes the fact that the state of the universe is represented by a wave function which is a compendium of all the wave functions that each of us can cause to collapse with her or his observations. That is why it is a collection of subjective acts, although an objective one. [...] In Pribram's opinion a sensory perception is transformed in a "brain wave", a pattern of electromagnetical activation that propagates through the brain just like the wavefront in a liquid. This crossing of the brain provides the interpretation of the sensory perception in the form of a "memory wave", which in turn crosses the brain. The various waves that travel through the brain can interfere. The interference of a memory wave and a perceptual (e.g., visual) wave generates a structure that resembles an hologram. Link.
Each knower's act of knowledge (each individual increment of knowledge) results in a new state of the material universe. One person's increment of knowledge changes the state of the entire material universe, and, of course, it changes it for everybody else. Link.