Have any experiments been conducted that explore the state of consciousness of the observer in the double slit experiment? My understanding of the double slit experiment is this. Shoot one photon at a time through a slit and you get a line of light (particle model). Shoot single photons through double slits and you get an interference pattern (wave model). Shoot single photons through double slits while observing what passes through the slits and you get two lines of light (particles again). My wife likes to call this 'shy photons'. It doesn't matter if you observe the photons as they pass through the slits or long after the fact (delayed choice). Forgive me if my first-time post treads too far into the fringe, but a slight elaboration of my question might help folks understand what I am asking. There have been experiments attempting to demonstrate an impact of human consciousness on macro reality. I don't know if he qualifies as a scientist or a crank on this forum, but William Tiller's work would be an example. I am curious if any experiments have looked at whether the double slit experiment changes depending on who does the observing and what their state of consciousness is. Can meditating monks observe what slit(s) the photon passes through without losing the interference pattern? Thanks.