Me and my wife were sleeping at the time, I woke up like someone had startled me i rolled over quickly and above me was what appeared to be a robotic arm with a rectangle head it had three lights on it with a needle type thing in the center of it, the first time i recall seeing this it was white in color and it retracted back into our bedroom wall, the lights on the thing were on but gave off no apparent glow, the second time i saw the arm it was black in color same shape and everything this time as it retracted to the wall it also disappeared at the same time. Both times my wife was sleeping next to me and remained asleep until i was frightened and woke her up and told her about that. i have also been woken up by a needle prick in my arm or shoulder area. i have not attached that to the other events but, we wake up almost every night around the same time frame usually between 2 am and 4 am, with a sense of dread or that something is amiss in our room. I have no idea, how to explain what i have seen or what my wife has witnessed. just would like some input, on the matter and if anyone has had this happen to them