This ignorance shouldn’t be surprising, because despite many theories, we still don’t fully understand the purpose of sleep or the function of REM sleep (rapid eye movement) when most dreams occur. Neuroscience and psychology experts continue to conduct experiments to understand what happens in the brain during sleep, but even if research is ongoing, it may not be possible to finally prove theories about why we dream. Dreaming is part of healthy sleep and is generally considered completely normal and does not adversely affect sleep. Heavy dreams can cause a person to avoid sleep, leading to lack of sleep.
REM sleep dreams are usually more vivid, weird, and / or bizarre, even though they may include wakefulness. Conversely, dreams not associated with REM sleep tend to contain more coherent content, including thoughts or memories that are rooted in a specific place and time. Thus, dreaming occurs mainly during REM sleep, when the brain is more like “wakefulness,” even though the body is paralyzed. Dreams are usually assumed to occur only during rapid eye movement (REM) sleep – this is when the brain appears to be active but the person is asleep and paralyzed.
REM sleep is defined by constant eye movements during sleep; however, dreams can occur during other stages of sleep, but these dreams are generally less memorable and much less vivid. We also have dreams during sleep with non-rapid (non-REM) eye movements, but these dreams are known to be less frequently remembered and have a more mundane meaning. Dreams arise simply as a response to physiological brain activity, such as neurotransmitters that regenerate while we sleep. One theory states that dreams are the result of our brains trying to interpret external stimuli (such as a dog barking, music, or a baby crying) during sleep.
Other theories suggest that dreams can help us solve problems and form memories, or they are simply generated by accidental activation of the brain. It is also believed that dreams have no specific purpose, but only by-products of the biochemical processes that occur in the brain during sleep. There is also a theory, the least interesting one so far, that dreams do not actually perform any functions, they are just useless by-products of the brain that we activate when we sleep.
We know that the back of our brain becomes quite active during REM sleep, when most dreams occur. Some think it’s just a brain relaxing at night, and that dreams are random, mindless brain flashes that we don’t have when we’re awake. There will probably never be a simple answer or theory to explain the entire role of dreams in human life.
Biology, cognition, psychology: Dreams may have important functions in each of these areas. Although everyone has dreams, the content of these dreams and their effects on sleep may vary from person to person. Although there is no simple explanation for the meaning and purpose of dreams, it does help you understand the basics of dreams, the potential effects of nightmares, and the steps you can take to better sleep in your dreams.
Dreams are a universal human experience that can be described as a state of consciousness characterized by sensory, cognitive, and emotional events during sleep. Dreams are periods of mental activity that occur when sleepers experience fantasy and hallucinations during sleep.
Dreams are the stories, images and feelings we create during sleep (3). Dreams are basically stories and images created by our brain during sleep. We often dream about recent events in our daily lives; dreams are often themed, such as people dreaming about sex, quarreling, stalking, and looking for relatives.
Modern explanatory theories explore the function of dreams in consolidating memory, acting as a dumping ground for redundant data. Dreams are the result of our brains organizing, consolidating and transmitting information received during sleep.
At the same time, when we sleep, during REM sleep, key emotional structures and memory-related brain structures are reactivated. “In the REM phase, the brain functions differently from when we are awake; some parts of the brain are in a dormant state, such as the prefrontal cortex that controls rational thinking, while other parts become very active, such as the amygdala part of the brain. The brain… …The brain that controls emotions.
During the night, many external stimuli can bombard the senses, but the brain often interprets the stimulus and makes it part of sleep to ensure uninterrupted sleep. Research has shown that external stimuli presented during sleep can influence the emotional content of dreams.
A study found that the same parts and processes in the brain that regulate emotions while waking are also related to dreams (26). Scientists studying the appearance of the brain during sleep have found that the brain regions that regulate our emotions when we are awake are the same brain regions that are stimulated when we sleep. This theory suggests that REM sleep plays a vital role in the regulation of emotions in the brain.
As a result, the way the brain works can affect a person’s ability to remember dreams. We hypothesize that sleep-within-sleep exists, at least in part, to prevent other senses from controlling the visual cortex when not in use. Dreaming at different stages of sleep can also serve unique purposes.
Since we dream all night, it is easier for us to remember dreams that occurred during REM sleep. While there is no evidence that we dream more often when we are stressed, research shows that we are more likely to remember our dreams because our sleep is worse and we tend to wake up more often at night. And this may explain these changes in our dreams when we are anxious, depressed, or sleep poorly.
It is not clear whether this is directly related to REM sleep and dreaming or other parts of sleep, but based on other evidence, these effects are likely to occur during sleep. Dreaming is most common during REM sleep (rapid eye movement), because brain activity is very active at this time and most similar to being awake. However, your most vivid dreams are during a stage called REM (rapid eye movement) sleep, when your brain is most active.
Scientists believe that the most vivid dreams we can remember occur during the last and longest REM cycle (13) closest to awakening. Forget Dreams Research on brain activity shows that most people over the age of 10 have 4 to 6 dreams every night, but some people rarely have dreams.
In terms of overall brain health and function, forgetting dreams is considered completely normal. Although we often like to recall our dreams the next day, it is important to decipher whether the meaning of these dreams has any meaning. Although humans have indeed discovered many cultural uses for dreaming, it is entirely possible that dreams are just an unconscious branch of rapid eye movement sleep and have no unique biological purpose in themselves.