Sleep Stages Explained! | Neuroscience 101

Our sleep is characterized by different stages from shallow sleep, to deep sleep, to REM sleep. What happens in the brain during these stages?
In this videos we discuss the four sleep stages. The first stage is characterized by oscillatory theta waves which reflect a state of drowsiness. When we just fall a sleep and before we wake up we are in this stage, but most of the night we are in the other three stages.
The second stage is characterized by sleep spindles and K-complexes in the electroencephalogram (EEG). These specific activity patterns are related to memory processing. Indeed, sleep is extremely important for forming and solidifying memories.
The third stage is the so-called deep sleep. In this stage it is hard to wake up. If you do, you will feel groggy for a while. This stage is important for our immune function and the recovery of our body.
Finally the rapid eye movement or REM sleep stage is characterized by brain activity that somewhat resembles awake activity. Although dreams can occur in any sleep stage, REM sleep is where dreams occur most likely.
Narrated by: Miles Wischnewski
Produced by: Michael Hörberg.
References:
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Garbarino, S., Lanteri, P., Bragazzi, N. L., Magnavita, N., & Scoditti, E. (2021). Role of sleep deprivation in immune-related disease risk and outcomes. Communications biology, 4(1), 1304. doi.org/10.1038/s42003-021-02...
Gottesmann C. (2002). GABA mechanisms and sleep. Neuroscience, 111(2), 231-239. doi.org/10.1016/s0306-4522(02...
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Santhi, N., Groeger, J. A., Archer, S. N., Gimenez, M., Schlangen, L. J., & Dijk, D. J. (2013). Morning sleep inertia in alertness and performance: effect of cognitive domain and white light conditions. PloS one, 8(11), e79688. doi.org/10.1371/journal.pone....
Seibt, J., Timofeev, I., Carrier, J., & Peyrache, A. (2016). Role of Spindle Oscillations across Lifespan in Health and Disease. Neural plasticity, 2016, 8103439. doi.org/10.1155/2016/8103439
Ulrich D. (2016). Sleep Spindles as Facilitators of Memory Formation and Learning. Neural plasticity, 2016, 1796715. doi.org/10.1155/2016/1796715
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[@Neuronalchannel]

Great video!

[@literallyagalaxy7789]

Thank you for explaining whats happening in my brain during math class

[@real.psyched]

Haha, my pleasure!