Why do we Dream?

14 March 2023

Why do we Dream?


Dreams have fascinated humans for centuries. From ancient civilisations to modern times, people have been captivated by the mysterious and often surreal world of dreams. Despite the many theories and explanations that have been proposed over the years, the question of why we dream remains a subject of ongoing debate and research.

One of the earliest and most famous theories of dreaming comes from the ancient Greeks. They believed that dreams were messages from the gods, sent to help humans solve problems or provide insight into their lives. Other cultures have had similar beliefs, viewing dreams as a window into the spiritual world or a means of communicating with ancestors or spirits.

In the modern era, the study of dreams has been approached from a scientific perspective. Researchers have used various techniques, such as electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), to study the brain activity of people while they sleep and dream. Through this research, several theories have emerged to explain why we dream. 



One of the most influential theories of dreaming is the activation-synthesis theory proposed by psychiatrist J. Allan Hobson and psychologist Robert McCarley in the 1970s. This theory suggests that dreams are a result of random brain activity during REM (rapid eye movement) sleep, the stage of sleep when most dreaming occurs. According to this theory, the brain tries to make sense of this random activity by creating a story or narrative, which we experience as a dream.

Another theory, called the problem-solving theory, suggests that dreaming serves an important function in helping us solve problems and process emotions. This theory proposes that dreams allow us to work through issues we may be struggling with in our waking lives, allowing us to come up with new solutions or perspectives. Dreams can also help us process and integrate emotional experiences, allowing us to better cope with stress and trauma. 

Some researchers have also suggested that dreaming may play a role in memory consolidation. During sleep, the brain processes and consolidates memories from the day before, and dreaming may be a part of this process. Dreams may help to reinforce memories or make connections between them, which can improve overall memory retention. 

Despite the many theories and explanations that have been proposed over the years, the exact function of dreaming remains unknown. It's possible that dreams serve multiple functions, or that the purpose of dreaming may vary depending on the individual or the situation. More research is needed to fully understand the role that dreams play in our lives and our brains.

The question of why we dream remains one of the most intriguing and mysterious areas of sleep research. While several theories have been proposed, the exact purpose of dreaming is still unknown. However, it's clear that dreaming plays an important role in our lives and our brains and continues to fascinate and intrigue us.