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This is who we are. The daily experience of the self is so familiar, and yet the brain science shows that this sense of the self is an illusion. Psychologist Susan Blackmore makes the point that the word ‘illusion’ does not mean that it does not exist — rather, an illusion is not what it seems.
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Brain function When you sleep, your brain’s glymphatic (waste clearance) system clears out waste from the central nervous system. It removes toxic byproducts from your brain, which build up throughout the day. This allows your brain to work well when you wake up.
The VLPO promotes sleep by inhibiting activity in the brain’s arousal centers. Another area of the hypothalamus is responsible for shutting down the brain’s arousal signals and causing the transition to sleep.
What does microsleep feel like? Signs of microsleep include drowsiness, trouble focusing, heavy eyelids, blank staring, and yawning. Most people experience microsleep when they aren’t getting the full 7-9 hours of sleep every night.
Vivid hypnagogic hallucinations are associated with SOREMPs or with patterns at sleep onset that are intermediate between wakefulness and REM sleep. They appear to represent the intrusion of REM sleep dreaming into wakefulness.
Is It Healthy to Sleep Sitting Upright? Sleeping upright is neither inherently healthy or unhealthy. As long as you’re able to rest comfortably and get enough sleep, the upright position might be the best option. Some people live with medical conditions that make sitting up more comfortable for sleeping.
A. Sleeping sitting up in a recliner shouldn’t be harmful. It could, in some cases, raise your risk of deep-vein thrombosis, a blood clot in a limb that can occur if your arms or legs are bent and you are motionless for hours. This sometimes occurs in people who sit still for long periods of time in an airplane seat.
Dangerous blood clots can appear along with painful back problems and circulatory issues causing swelling of the feet and legs. By placing the legs and knees in an elevated position for sleep time, the body will have time to repair and allow for the blood to flow throughout the body to give the lower half a rest.