Whenever it hits us, it’s always a strange feeling and one that we struggle to explain. It can be described as the feeling of having been somewhere before, doing the same thing there and with the same people. Now, we have all had this strange experience at least once and it is known as déjà vu. Do we experience these episodes due to our memories, memory, unconsciousness or our emotions? In any case, when this feeling occurs, everything seems to be blurred. Susan Taylor explains what happens to our brain when déjà vu kicks in.