Explain the Dejavu Phenomenon logically

Dejavu occurs when someone gets the feeling that he has experienced or done something similar to his past experience. This term comes from French which means 'never seen'. Although studies show that dejavu is experienced by many healthy individuals, this incident can also be part of certain medical conditions, such as seizures and aura in migraines.

Various Theories in Efforts to Solve Dejavu

Many are curious about how the dejavu phenomenon can occur. Various studies have tried to explain how a person can experience dejavu. Several explanations exist regarding this phenomenon, including:

• Associated with mental disorders

Initially there were suspicions that dejavu was associated with mental disorders, such as anxiety, dissociative identity disorder (previously known as compound personality disorder), and schizophrenia. However, the initial research conducted did not find strong evidence related to the correlation between them.

• Related to age and stress

According to research, dejavu is more common in the age between 15-25 years, and generally will gradually disappear with age. In addition, the appearance of dejavu can also be triggered by stress and fatigue. The same study also revealed that dejavu is more common at night and weekends.

• Impaired synchronization of information in the brain

Some researchers suspect that the phenomenon of dejavu occurs due to a mismatch of information in the brain when trying to make a comprehensive perception of an event, where the information is too little, so that what appears is vague information between sensory input and memory-recall output (recalling information from past events). However, this theory has not been able to fully explain why dejavu can occur. Another theory that is still related to the allegations above says that dejavu arises due to brain failure in a very short period of time, resulting in a collision between long-term and short-term memory. In this theory it is said, the existence of memory path deviations, where short-term memory is lost into one's long-term memory, will cause dejavu. This is the reason dejavu often makes us feel as if we have experienced something that is experienced now in the past.

• Disorders of the medial temporal lobe

Other studies suspect medial temporal lobe disorders of the brain as triggering dejavu. Studies conducted on epilepsy patients using electrical stimulation have found that stimulation of the rhinal cortex in the brain can trigger dejavu.

Although the cause of dejavu is not yet certain, there is no need to worry if you experience it. Until now there has not been found strong evidence of serious disorders related to the health and mental health of someone who has dejavu. However, if your dejavu begins to feel disturbing, you should consult with a psychiatrist or a neurologist for proper treatment.