Hi every1!

don't know exactly if it fits in this forum, but i have a question i hope anyone of u can answer. sometimes (when i'm awake), especially when i am listening to biaural frequencies, i begin seeing things in a really weird way. i then cant tell the size of an object anymore, it seems to be small and big at the same time. sometimes i have a feeling of watching objects slightly from above, but i feel my body all the time and still have control over it like normal. i tried to move without moving my material body without success. after being in this state for some minutes i usually get rather tired.

i asked myself if this could be some form of preOBE if such a thing exists.
has anybody experienced similar vision changes or can tell me what i should think of it?

thanks for all answers