What ive experienced on multiple occasions under completely different circumstances is hard to describe as in some cases the words dont exist. There is no ‘I’, no awareness of self but there is some other kind of awareness on a more basic level. I think what happens is the higher brain functions shut down leaving other parts to operate at an increased processing rate which in turn makes things appear to occur more slowly. There is more ‘time’ to observe surroundings and make better choices, its also an extremely peaceful state unhindered by any emotional responses. I dont expect anyone who hasnt experienced to comprehend. If you watch F1 drivers closely on the start line sometimes you will see them start to change. Its not possible to drive at the speeds they do in a normal conscious state.