This collapse is supposed to occur upon any act of measurement; and in one interpretation, the only way to distinguish a measurement from a nonmeasurement is via the presence of consciousness. This theory is certainly not universally accepted (for a start, it presupposes that consciousness is not itself physical, surely contrary to the views of most physicists),
That is why consciousness as the collapse of wave functions seemsmost plausible ;but within dualissm. Important is that such theory explains the emergence of consciousness, but not the pecularity of consciousness, that it is objectivelly not accessible.
