I am having symptoms like feeling sometimes drowsy without any reason, body vibration, unaware about surrounding for a second and this happens in night time only. I am listening someone is giving voice assistance to my activities, what I am seeing, thinking etc I am 48 year old male I have evidence that I am listening voice and its not hallucination and some people are involved in this with the help of cyber technology. I would like to know is there any association of medical science in this activity and what exactly is this.