![]() Migraine: Fragmented sleep may increase a person’s risk of experiencing migraine in the immediately following days.Reduced coping skills: Some research suggests that a lack of REM sleep may reduce a person’s ability to differentiate between threatening and non-threatening stimuli and respond accordingly.Some studies link a lack of REM sleep to: These findings may help explain why infants require higher levels of REM sleep, with the number of minutes of REM sleep falling as people age. Some research indicates that this sleep stage is responsible for the neural stimulation necessary for mature brain structure developments. ![]() REM sleep may be essential for brain development in infants. As a result, sleep deprivation can negatively affect a person’s working memory.Ī 2016 study involving healthy adolescents also found that sleep deprivation could increase the risk of forming false memories.Īccording to some studies, even short periods of daytime sleep can help a person learn muscle patterns (motor memory) and commit them to memory. The brain processes information and consolidates memories during sleep. A lack of REM sleep may have adverse implications for physical and mental health. ![]() These readings are also more variable than those observed during non-REM sleep, with random spiking patterns at times fluctuating more than activity seen while awake.REM sleep may benefit learning, memory, and mood. However, EEGs obtained during REM sleep show sleep patterns with low voltage and fast waves, some alpha waves, and muscle twitch spikes associated with transmitted rapid eye movement. N3 sleep is characterized by delta waves, or high voltage, slow, and irregular activity. N2 sleep introduces K waves, or long, high voltage waves lasting up to 1 second, and sleep spindles, or periods of low voltage and high frequency spikes. N1 sleep shows slowing of the normal alpha wave pattern noted during the awake state. James Holmes / Science Photo Library / Getty Images Plusĭuring REM sleep, brain wave activity measured on an electroencephalogram (EEG) also increases, as compared to the slower wave activity seen during non-REM sleep. 6 & 7 are electromyograms (EMG) of activity in the laryngeal (6) and neck (7) muscles. Numbering the traces from top to bottom, 1 & 2 are electroencephalograms (EEG) of brain activity 3 is an electrooculogram (EOG) of movement in the right eye 4 an EOG of the left eye 5 is an electrocardiogram (ECG) trace of heart activity. Twitching can still be observed in smaller muscle groups. However, because this period is often associated with dreams, major limb muscle activities are temporarily paralyzed. Autonomic functions such as heart rate, respiratory rate, and blood pressure begin to increase closer to their values while awake. ![]() As the name implies, the eyes move rapidly sideways during REM sleep. However, after the occurrence of N3 sleep (the deepest stage of sleep), the brain signals for the onset of a more aroused state. The three prior stages of sleep, known as non-REM or N1, N2, and N3, occur initially during the sleep cycle to progressively slow bodily functions and brain activity. REM sleep is often described as a “paradoxical” sleep state due to its increased activity after non-REM sleep.
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