AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
I dont dream when i sleep12/2/2023 ![]() Finally, there is a theory that dreams are a way for the brain to rid itself of information it isn’t using, a sort of “psychic disk cleanup.” According to Merced, any of these explanations could be correct. REM sleep and dreaming may also help process important or traumatic memories. Why spend energy on involuntary movements and brain activation if nothing is being achieved? One possibility is that dreams are kind of a virtual reality world, a space where humans can safely practice coping with threats (being chased, for example, is pretty common). The fact that we mostly forget our dreams lends some support to this view: Memory formation systems are mostly turned off during dreaming.Īssuming there is a purpose, natural selection suggests that dreaming must provide some sort of survival benefit. In this view, dreams are evolutionary hitchhikers: REM sleep is beneficial, and dreams tag along with it. Is it possible there is no why? Many researchers think that dreams are simply the product of chemical changes in the brain during sleep. Rational parts of the brain remain dormant, so insane events are accepted without question.īut back again to why. Parts of the brain that control emotions are running full steam, perhaps explaining why dreams can be full of strong emotions, like terror or joy or sadness. Images in dreams come entirely from the brain: visual sensory input is shut down even open eyes will not process images during dreaming. Taken together, these chemical changes seem to stimulate a condition similar to wakefulness, but without any of the trappings of being awake. Unsurprisingly, areas of the brain controlling awareness and consciousness remain dormant. In contrast, when a person wakes up from a nightmare, they tend to be alert and aware of what was happening in their dream. If awakened, they likely will be disoriented. Chemical changes occur as well, especially during REM: acetylcholine, a neurotransmitter that fires up the brain and forces muscles to contract, ramps up production. Sleep terrors don’t involve a full awakening instead, a person remains mostly asleep and difficult to awaken. Now, thanks to PET scans, it is known that large areas of the brain, covering such functions as motor control and sensory processing, all become active during dreams. Dreaming occurs during non-REM (NREM) sleep as well, but those dreams tend to be less vivid. Researchers would wait for the Rapid Eye Movement (REM) sleep to begin, then wake the subject up and ask about any dreams. Early dreaming studies were, frankly, pretty primitive.
0 Comments
Read More
Leave a Reply. |