"Already Seen" - Déjà Vu
Why Déjà Vu is so interesting...
Déjà Vu is that uncanny feeling of familiarity. Feeling like you've experienced a certain time, place, or situation before is fascinating. Learning more about Déjà Vu might help me understand it more and spread a little light to others on this engaging topic.
Déjà Vu Explained
People from the beginning of time have experienced déjà vu but never knew how to explain it, most people believed they were going crazy. But research nowadays are showing that déjà vu is linked to a certain layout of a scene will trigger this feeling. One reason for the feeling that accompanies déjà vu may be the contrast between the sense of newness and the sense of oldness—something unfamiliar should not also feel familiar.
The Brain During Déjà Vu
Over time, researchers have found where déjà vu occurs in the brain by disturbances in the medial temporal lobe. The the entorhinal and perirhinal cortices (structures involved in memory and responsible for sensory processing) can actually cause a déjà vu episode. Other researchers in France found that neural firing between the rhinal cortices and the hippocampus or amygdala were increased in stimulations that induced déjà vu. This suggests that some sort of coincident occurrence in medial temporal lobe structures may enhance activation of the recollection system.
Research and Psychologists
Research on déjà vu splits into two main categories: observational studies and experimental studies. In observational studies, researchers measure features of the déjà vu experience (who has it, how often it happens, when it happens, etc.) and look for patterns and links in the results. Observational study groups of people and their ages to see which age group is affected the most by déjà vu or who has experienced it the most. One research program found that déjà vu might help individuals with memory problems. People who can't seem remember distant memories may benefit in training on how to rely on familiarity or intuition. The most prominent researchers are found in the Central European Institute of Technology, Masaryk University (CEITEC MU) and Masaryk University's Faculty of Medicine in the Czech Republic.
Other Interesting Facts About Dèjá Vu
Dèjá Vu is somewhat considered a malfunction in how memories are made in the first place. Normally new experiences stop in the short term memory before going into long term storage. If you skip the first, then it could feel like you're recalling new events for old ones. This creates a feeling of misplaced familiarity.
What is Déjà Vu?!