There are many kinds of pre-OBE symptoms. Those are one of them. When you obe, there are more distortions.
When I was trying to relax last night and enter trance (I just layed down quietly and tried to imagine the falling feeling so I could eventually loose any perception of my lower limbs or body).. suddenly everything started to get confusing. When I tried to think or visualize anything of clarity, everything got distorted such as my arm felt small like a popsicle stick, and my thumb felt like it expanded into the whole room. My head also felt like it was going to spin.
Are these pre-OOBE symptoms, which is a good sign I am on the right track?
Should any mental confusion or distortion of environment and self go away eventually which should lead to the loss of sensation of all yuor body parts and then eventually vibrations / energy surges