Have you ever walked into a room and had a feeling that you have been there before when in fact you haven’t? That is called Déjà vu.
Déjà vu is French for “already seen” it is used to describe the feeling you get when you’re in a situation and feel like you have been in the same situation before when in fact you haven’t.
Deja vu may occur in dreams where you may dream of something that, at the time, makes no sense but days, weeks or months later the same thing may happen to you and then all of a sudden it hits you; that was déjà vu.
The most common types of déjà vu is experienced in nature where you may see, hear or smell something that stirs a feeling that you associate with something else you have seen, heard or smelled before. This type of deja vu is a memory based experience and the memory centers of the brain are responsible for it.
When you walk into a room busy talking to someone before you actually look at the house, your brain processes it visually, by smell or by sound and when you actually look at the house you may get the feeling that you have been there before.
The medical temporal lobe is involved in our conscious memory and within the medical temporal lobe are the parahippocampal gyrus, the rhinal cortex and the amygdala. The hippocampus enables us to recall events and enabled us to determine what’s familiar and what isn’t.
Déjà vu also occurs in psychiatric disorders such as; anxiety, depression, dissociative disorders and schizophrenia.
Between the ages of 15 and 25, the chances for you to experience déjà vu are higher, déjà vu experiences decrease with age. Active imaginations, people with higher incomes, people who travel more and those with higher educational levels tend to experience déjà vu more often.
Next time you walk into a room and feel like you have been there before, you will know that that is in fact déjà vu.