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After going through stages of REM-sleep, people with depression report feeling better, in a study done by Cartwright et al. [40] Conversely, a theory proposed by Revonsuo [41] states that when people experience negative emotions or negative events, when they sleep the REM-sleep replays such events, which is known as rehearsal. [39]
Sleep plays a role in emotion regulation, although stress and worry can also interfere with sleep. Studies have shown that sleep, specifically REM sleep, down-regulates reactivity of the amygdala, a brain structure known to be involved in the processing of emotions, in response to previous emotional experiences. [54]
The hypothalamus region of the brain regulates basic functions of hormone release, emotional expression and sleep. One study concluded that the neurochemical hypocretin, also known as orexin, which is regulated by the hypothalamus, was significantly reduced in study participants with symptoms of cataplexy. Hypocretin regulates sleep and states ...
A study published in Emotion found that middle-aged adults (40-64) were more likely to use “proactive emotion-regulation strategies” than younger or older adults, which means they think about ...
Emotional memories are consolidated greater during sleep, rather than neutral memories. [77] Studies have investigated high valence and arousing words, in comparison to neutral words. Sleep enhances the consolidation of the high valence and arousing words and therefore these are remembered more post-sleep.
The ontogeny of sleep is the study of sleep across different age groups of a species, particularly during development and aging. Among mammals, infants sleep the longest. [44] Human babies have 8 hours of REM sleep and 8 hours of NREM sleep on an average.
In fact, many studies have found a bidirectional relationship between stress and sleep. This means that sleep quality can affect stress levels, and stress levels can affect sleep quality. Sleep change depends on the type of stressor, sleep perception, related psychiatric conditions, environmental factors, and physiological limits. [5] [6] [4] [7]
Emotional attention bias can be influenced by sleep. Studies have been performed and have shown that sleep deprivation in children reduces their ability to adjust their behavior in emotional situations. Children showed high emotional attention biases when deprived of sleep. This occurs because sleep prepares the body for emotional challenges. [7]