D茅j脿 vu, or translated from French- 鈥榓lready seen鈥�, is something we have all experienced. You walk up to the coffee shop counter, ready to order a latte, and are suddenly overwhelmed by the feeling that you have experienced this experience before. D茅j脿 vu could perhaps be better described as d茅j脿 v茅cu, or 鈥榓lready lived through鈥�. D茅j脿 vu even has a counterpart- , or 鈥榥ever seen鈥�, which is the experience of being unfamiliar with one's situation, though still recognizing parts of it. Some people, especially those living in ancient times, believed d茅j脿 vu to be mystical in nature- a kind of premonition. Scientists believe that it is merely a trick of our memories.
There are two聽kinds of d茅j脿 vu: pathological and non-pathological. Non-pathological d茅j脿 vu is the sort that most of is experience, where we simply feel the feeling. Pathological d茅j脿 vu is experienced in people with , a condition causing seizures that centre on the temporal lobe of the brain, the lobe most involved in processing sensory inputs and making visual memories, comprehending language and making emotional associations. Some scientists believe that all cases of d茅j脿 vu are pathological, as they are associated with mild epileptic episodes, related to improper electrical discharges between neurons in the brain.
D茅j脿 vu is quite hard to study since most experiences of it are fleeting and unexpected, but studies using , or have tried. for the phenomenon is that signals enter the temporal lobe (in the left hemisphere of the brain) twice, once from each hemisphere, and a slight delay between these two聽signals could cause someone to seem to experience events 鈥榯wice鈥�, almost instantaneously.
Whatever the cause of it, you can be assured that in the majority of cases, d茅j脿 vu occurs because the human brain is a bit strange, not because you have successfully seen the future in a dream.
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