I have had this before, and experienced it yesterday while I was EXTREMELY depressed. I just sort of...shut down. I was awake physically, but emotionally I wasn't there. Felt a lot like emotional numbness...I could sense my surroundings and what was around me, but I may as well have been a table or something.

When my brother came home later, I was still in this state, but was able to pull myself out of it just long enough to talk to him and seem "normal". I wasn't even trying, it was like an automatic change...a defense mechanism. Then I went into my room and returned to that emotional nothingness.

Has anyone experienced this...and does anyone know what it's called?