Hypnagogia: Difference between revisions

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'''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 ([[Wake initiated lucid dream|WILD]]). It mainly happens during stage 1 of NREM sleep, and before the onset of sleep. <ref>https://en.wikipedia.org/wiki/Hypnagogia</ref>

==Hypnagogic phenomena==

===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 three dimensional.

===Auditory===

These can be faint to loud sounds, almost exclusively short, nonsensical fragments of speech, everyday noises, or a voice calling one's name. Exceptionally, longer-lasting auditory hallucinations can also be heard, like music. Some people report hearing very loud noises, like crashes, gunshots or explosions, which is a sleep disorder known as the ''exploding head syndrome''.

===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. Propioceptive hallucinations, like 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.

==References==

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 {{stub}}
 '''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 ([[Wake initiated lucid dream|WILD]]). It mainly happens during stage 1 of NREM sleep, and before the onset of sleep. <ref>https://en.wikipedia.org/wiki/Hypnagogia</ref>
+==Hypnagogic phenomena==
+===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 three dimensional.
+===Auditory===
+These can be faint to loud sounds, almost exclusively short, nonsensical fragments of speech, everyday noises, or a voice calling one's name. Exceptionally, longer-lasting auditory hallucinations can also be heard, like music. Some people report hearing very loud noises, like crashes, gunshots or explosions, which is a sleep disorder known as the ''exploding head syndrome''.
+===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. Propioceptive hallucinations, like 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.
 ==References==