![]() ![]() The information arrives once directly, and a second time after its detour through the right hemisphere of the brain. In testing his theory, not only did he find the temporal lobe of the brain’s left hemisphere to be responsible for sorting incoming information, he also discovered that the temporal lobe receives this incoming information twice, but with a milliseconds-long delay between transmission. According to him, because information enters the processing centers of the brain via more than a single path, it is likely that there are instances that the blending of information might not synchronize correctly. In 1963, Robert Efron at the Veterans Hospital in Boston tested his proposed idea that a delayed neurological response is what causes déjà vu. Essentially, the theory holds that déjà vu happens when two cognitive processes are momentarily out of sync. The dual processing theory is based on the way the human brain processes new information and how it stores short-term and long-term memories. ![]() This theory is called “dual processing,” and it is the most widely accepted take on this mysterious phenomenon among psychologists. One theory suggests that déjà vu is caused by memories failing to form correctly in the brain. For those who are fascinated by this phenomenon and want to try to get to the bottom of this psychological mystery, here are three psychological theories that have been proposed to explain déjà vu! CAUSES OF DÉJÀ VU: DUAL PROCESSING THEORY (FALSE MEMORIES) Though not fully proven, some experts in the field generally agree that déjà vu occurs because of a communication issue between the short term and long term memory, a rare occurrence that functions like a circuit breaker.Īlthough the actual cause of déjà vu has yet to be confirmed by science, there are many different theories that attempt to explain how it happens, and they each have interesting implications for the mechanisms of the human brain. Then, there’s the psychological standpoint, which generally considers déjà vu to be caused by a memory mismatch that in turn, causes people to feel that they’ve already experienced a specific event that they know is completely novel to them. Several psychoanalysts, on the other hand, attribute the phenomenon to nothing more than simple fantasy and wish fulfillment of our desires and dreams. To many parapsychologists, this occurs when things and experience from our past lives merge with our present life. There is much speculation as to how and why this phenomenon occurs in people. Déjà vu is a common intuitive feeling that has happened to around 60 to 70 percent of people, and it occurs more frequently to people between 15 and 25 years old compared to any other age group.ĭéjà vu is a rather complex phenomenon, and like many unusual phenomena involving the brain, it has yet to be fully understood. This phenomenon is called “déjà vu,” which in French literally means “already seen.” Essentially, it is a sensation that something we’re experiencing at the moment has happened before, whether it’s just a single element such as a taste, a sight or a sound, or whether it’s an entire sequence of events. doi: 10.1111/j. you ever get that odd and unsettling feeling or sense that you’ve been in an exact situation before? Or you’ve already experienced something that you know for certain you are doing for the very first time? Have you ever felt that overwhelming sense of familiarity with something that you shouldn’t be familiar with at all? WHAT IS DÉJÀ VU? Current Directions in Psychological Science. Intense and recurrent déjà vu experiences related to amantadine and phenylpropanolamine in a healthy male. Feel Like You’ve Been Here Before? It Might Be Déjà Vu. Deja vu: what it is, when it may be cause for concern. ![]() Unveiling the mystery of déjà vu: the structural anatomy of déjà vu. Digging into déjà vu: recent research on possible mechanisms. Déjà experiences in temporal lobe epilepsy. Illman NA, Butler CR, Souchay C, Moulin CJA. Vlasov PN, Chervyakov AV, Gnezditskii VV. Many faces of déjà vu: a narrative review. ![]() Bošnjak Pašić M, Horvat Velić E, Fotak L, et al. ![]()
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