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Reasons Behind Dreams And Nightmares: Little do people know that the brain doesn’t go on a break during sleep. Rather, when the brain is sleeping, it becomes a hall of dreams and nightmares. A lot of people experience dreams and nightmares and come up with the question, “Why did I have this dream?” Well, this is mostly related to REM (rapid eye movements) sleep, where dreams result from the brainstem stopping motor neurons, which paralyse the body but initiate some centres pertaining to emotions and visual fields. Nightmares are usually associated with stress or trauma, which reflect and intensify fear responses.

The nightly drama sorts out the emotions, consolidates memories and even solves problems, making sleep a vigorous workout for the brain. But most people wonder what makes a dream whimsical and a nightmare terrifying? Let’s reveal the scientific reasons behind dreams and nightmares.

The Science Behind Dreams

Building Memory: Dreaming has been associated with the consolidation of memory, where dreaming may serve an important cognitive function of strengthening memory and informational recall.

Processing Emotion: The ability to engage with and rehearse feelings in different imagined contexts may be part of the brain’s method for managing emotions.

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Mental Housekeeping: Dreaming can be the brain’s way of “straightening up,” clearing away partial, erroneous or unnecessary information.

Instant Reply: Dream content may be a form of distorted instant replay in which recent events are reviewed and analysed.

Incidental Brain Activity: As per the sleeping experts, dreaming is just a by-product of sleep that has no essential purpose or meaning.

Science Behind Dreams And Nightmares

Scientific Causes Of Dreams And Nightmares (Image Credits: Canva)

The Science Behind Nightmare

Stress And Anxiety: Sad, traumatic or tension-related situations that induce stress and fear may provoke nightmares. People with chronic stress and anxiety may be more likely to develop nightmare disorder.

Mental Health Conditions: Nightmares are often reported to be intensified by people with mental health disorders like post-traumatic stress disorder (PTSD). People with PTSD often have frequent, intense nightmares in which they relive traumatic events, worsening symptoms of PTSD, and often contribute to insomnia.

Certain Drugs And Medications: Some prescription medications that affect the nervous system are associated with a higher risk of nightmares.

Withdrawal From Some Medications: As some medications suppress REM sleep; thus, when a person stops taking those medications, there is a short-term rebound effect of more REM sleep, accompanied by more nightmares.

Sleep Deprivation: Insufficient sleep can make a person experience a REM rebound that can trigger vivid dreams and nightmares.

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Family History: In adults, a risk factor for nightmare disorder is a history of having had recurring nightmares during childhood and adolescence.

While sleep may seem like the brain is also under sleep, dreams and nightmares reveal that the sleeping brain's remarkable complexity, turning rest into an emotional processing, memory-hardening and creatively insightful gateway.

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