Sleep Medicine
October 1, 2022
Maurice Ohayon, Amir Pakpour
Sleep paralysis is a common phenomenon which causes and consequences are seldomly studied. The aim of this study was to investigate the incidence and prevalence of sleep paralysis (SP) in the American adult population and its evolution on a 3-year period. This longitudinal study was conducted between 2002 and 2015 and included a representative sample of the US general population. A total of...
Sleep
May 25, 2022
Maurice Ohayon, Amir Pakpour, Marie Lise Cote
Abstract Introduction Hypnagogic hallucinations are vivid hallucinations that occur at sleep onset, during the transition between wakefulness and REM sleep. The hallucinations can be visual, auditory, tactile or kinetic and can be terrifying for the individual who experience them. Hypnagogic hallucinations are a common symptom of narcolepsy, a disorder characterized by excessive sleepiness,...
Psychiatry Research
December 27, 2000
Maurice Ohayon
Hallucinations are perceptual phenomena involved in many fields of pathology. Although clinically widely explored, studies in the general population of these phenomena are scant. This issue was investigated using representative samples of the non-institutionalized general population of the United Kingdom, Germany and Italy aged 15 years or over (N=13,057). These surveys were conducted by...
Neurology
April 12, 1999
Maurice Ohayon, J Zulley, C Guilleminault et al.
Previous epidemiologic data on sleep paralysis (SP) came from small specific samples. The true prevalence and associated factors of SP in the general population remain unknown. A representative sample of the noninstitutionalized general population of Germany and Italy age > or =15 years (n = 8,085) was surveyed by telephone using the Sleep-EVAL questionnaire and the Sleep Questionnaire of...
The British journal of psychiatry : the journal of mental science
October 1, 1996
Maurice Ohayon, R G Priest, M Caulet et al.
Hypnagogic and hypnopompic hallucinations are common in narcolepsy. However, the prevalence of these phenomena in the general population is uncertain. A representative community sample of 4972 people in the UK, aged 15-100, was interviewed by telephone (79.6% of those contacted). Interviews were performed by lay interviewers using a computerised system that guided the interviewer through the...