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Create a Pre-Sleep Ritual: Turn your pre-sleep routine into a ritual that feels like a treat. This could involve dimming the lights, sipping on some warm herbal tea, or meditating.
Slow-wave sleep (SWS), often referred to as deep sleep, is the third stage of non-rapid eye movement sleep (NREM), where electroencephalography activity is characterised by slow delta waves. [ 2 ] Slow-wave sleep usually lasts between 70 and 90 minutes, taking place during the first hours of the night. [ 3 ]
Stage 2 is characterized by sleep spindles (intermittent clusters of waves at sigma frequency i.e. 12–14 Hz) and K complexes (sharp upward deflection followed by slower downward deflection). Stage 3 sleep has more sleep spindles. [24] [25] [26] Stage 3 has very high amplitude delta waves (0–4 Hz) and is known as slow wave sleep. [27]
Other frequency bands are: delta (1–4 Hz), theta (4–8 Hz), beta (13–30 Hz), low gamma (30–70 Hz), [15] and high gamma (70–150 Hz) frequency bands. Faster rhythms such as gamma activity have been linked to cognitive processing. Indeed, EEG signals change dramatically during sleep.
In a perfect world, most of us should take 10 to 20 minutes to fall asleep, with the average sleep latency (the time it takes to fall asleep) sitting at about 12 minutes.But alas, this world is ...
Beta waves, or beta rhythm, are neural oscillations (brainwaves) in the brain with a frequency range of between 12.5 and 30 Hz (12.5 to 30 cycles per second). Several different rhythms coexist, with some being inhibitory and others excitory in function. [1]
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