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The hypnagogic state can provide insight into a problem, the best-known example being August Kekulé’s realization that the structure of benzene was a closed ring while half-asleep in front of a fire and seeing molecules forming into snakes, one of which formed an ourobouros. [22]
Hypnopompia (also known as hypnopompic state) is the state of consciousness leading out of sleep, a term coined by the psychical researcher Frederic Myers.Its mirror is the hypnagogic state at sleep onset; though often conflated, the two states are not identical and have a different phenomenological character.
Silberer's contention was that the hypnagogic state is autosymbolic, meaning that the images and symbols perceived in the hypnagogic state are representative (i.e. symbolic) of the physical or mental state of the perceiver. He concluded that two "antagonistic elements" were required for autosymbolic phenomena to manifest: drowsiness and an ...
In the philosophy of mind, neuroscience, and cognitive science, a mental image is an experience that, on most occasions, significantly resembles the experience of "perceiving" some object, event, or scene but occurs when the relevant object, event, or scene is not actually present to the senses.
Perhaps it and the following sentence should read as something like "Hypnagogia [etymology] is the transitional state between wakefulness and sleep (i.e. the onset of sleep); Alfred Maury originally coined the adjective "hypnagogic" to describe this state."
Proprioception is occasionally impaired spontaneously, especially when one is tired. Similar effects can be felt during the hypnagogic state of consciousness, during the onset of sleep. One's body may feel too large or too small, or parts of the body may feel distorted in size.
The body abruptly loses muscle tone, a state known as REM atonia. [3] [6] In 1953, Professor Nathaniel Kleitman and his student Eugene Aserinsky defined rapid eye movement and linked it to dreams. REM sleep was further described by researchers, including William Dement and Michel Jouvet. Many experiments have involved awakening test subjects ...
A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.