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Sleep paralysis is a state, during waking up or falling asleep, in which a person is conscious but in a complete state of full-body paralysis. [1] [2] During an episode, the person may hallucinate (hear, feel, or see things that are not there), which often results in fear. [1] [3] Episodes generally last no more than a few minutes. [2]
Left–right confusion (LRC) is the inability to accurately differentiate between left and right directions. Conversely, Left–right discrimination ( LRD ) refers to a person's ability to differentiate between left and right.
Contrary to Wernicke's explanations, Kussmaul believed auditory verbal agnosia was the result of major destruction to the first left temporal gyrus. Kussmaul also posited about the origins of alexia (acquired dyslexia) also known as word blindness. He believed that word blindness was the result of lesions to the left angular and supramarginal ...
Akinetopsia (from Greek akinesia 'absence of movement' and opsis 'seeing'), [1] also known as cerebral akinetopsia or motion blindness, is a term introduced by Semir Zeki to describe an extremely rare neuropsychological disorder, having only been documented in a handful of medical cases, in which a patient cannot perceive motion in their visual field, despite being able to see stationary ...
Hori et al. regard sleep onset hypnagogia as a state distinct from both wakefulness and sleep with unique electrophysiological, behavioral and subjective characteristics, [10] [12] while Germaine et al. have demonstrated a resemblance between the EEG power spectra of spontaneously occurring hypnagogic images, on the one hand, and those of both ...
Aim for taking a nap around 6 or 7 hours after waking up, and try to nap at the same time every day. Mednick recommended saving longer naps for the weekends, or when you have time to sleep a full ...
It is a phenomenon in which the sleeper feels the presence of a supernatural, malevolent being which immobilizes the person as if sitting on their chest or the foot of their bed. The word "night-mare" or "nightmare" was used to describe this phenomenon before the word received its modern, more general meaning. [1]
Sleep disruption may leave people with RLS sleepy during the day, with low energy, and irritable or depressed. [2] Additionally, many have limb twitching during sleep, a condition known as periodic limb movement disorder. [11] RLS is not the same as habitual foot-tapping or leg-rocking. [12]