Hypnagogia: Difference between revisions
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==Hypnagogic phenomena== | ==Hypnagogic phenomena== | ||
===Visual=== | ===Visual=== | ||
Initially, hypnagogia will manifest itself as moving blobs of color (see ''[[phosphene]]''), in the form of lines, speckles, and geometrical shapes. Those patterns become increasingly complex and can be easily controlled on demand by focusing on specific shapes. Eventually, they can form simple images, even becoming three-dimensional. | Initially, hypnagogia will manifest itself as moving blobs of color (see ''[[phosphene]]''), usually luminescent, green or purple, in the form of lines, speckles, and geometrical shapes. Those patterns become increasingly complex and can be easily controlled on demand by focusing on specific shapes. Eventually, they can form simple images, even becoming three-dimensional. | ||
===Auditory=== | ===Auditory=== | ||
These can be faint to loud sounds, including short, nonsensical fragments of speech, everyday noises, or a voice calling one's name. Exceptionally, longer-lasting auditory hallucinations can also be heard, such as music. Some people report hearing very loud noises, like crashes, gunshots or explosions, which is a sleep disorder known as the [[exploding head syndrome]]. | These can be faint to loud sounds, including short, nonsensical fragments of speech, everyday noises, or a voice calling one's name. Exceptionally, longer-lasting auditory hallucinations can also be heard, such as music. Some people report hearing very loud noises, like crashes, gunshots or explosions, which is a sleep disorder known as the [[exploding head syndrome]]. If voices are heard, they are usually those of known people, or the sleeper's internal monologue. | ||
===Other senses=== | ===Other senses=== | ||
Olfactory, gustatory or [[tactile sensations]] are also possible in this state, and they are fleeting in nature. Sometimes, there is also some degree of [[synesthesia]], in which a real stimulus (such as a sound) may trigger perception of flashes or images. Floating limbs, feeling that one's body is in a different position from what it actually is, or changes in perceived body size are common too. | Olfactory, gustatory or [[tactile sensations]] are also possible in this state, and they are fleeting in nature. Sometimes, there is also some degree of [[synesthesia]], in which a real stimulus (such as a sound) may trigger perception of flashes or images. Floating limbs, feeling that one's body is in a different position from what it actually is, or changes in perceived body size are common too. Strong moving sensations or out-of-body experiences are usually related to [[sleep paralysis]], and can happen during hypnagogia. | ||
==See also== | ==See also== | ||
Revision as of 11:24, 11 February 2017
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This article is a stub. As such, it may contain incomplete or wrong information. You can help by expanding it. |
Hypnagogia is the experience of transitioning from wakefulness to sleep. During this state, one usually experiences visual, auditory or tactile hallucinations, or sleep paralysis. Usually, one has lost consciousness before entering this state, but it is also part of some induction techniques (WILD). It mainly happens during stage 1 of NREM sleep, and before the onset of sleep.
Hypnagogic phenomena
Visual
Initially, hypnagogia will manifest itself as moving blobs of color (see phosphene), usually luminescent, green or purple, in the form of lines, speckles, and geometrical shapes. Those patterns become increasingly complex and can be easily controlled on demand by focusing on specific shapes. Eventually, they can form simple images, even becoming three-dimensional.
Auditory
These can be faint to loud sounds, including short, nonsensical fragments of speech, everyday noises, or a voice calling one's name. Exceptionally, longer-lasting auditory hallucinations can also be heard, such as music. Some people report hearing very loud noises, like crashes, gunshots or explosions, which is a sleep disorder known as the exploding head syndrome. If voices are heard, they are usually those of known people, or the sleeper's internal monologue.
Other senses
Olfactory, gustatory or tactile sensations are also possible in this state, and they are fleeting in nature. Sometimes, there is also some degree of synesthesia, in which a real stimulus (such as a sound) may trigger perception of flashes or images. Floating limbs, feeling that one's body is in a different position from what it actually is, or changes in perceived body size are common too. Strong moving sensations or out-of-body experiences are usually related to sleep paralysis, and can happen during hypnagogia.