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Links Between Cognitive Deficits During Normal or Pathological Aging and Slow Waves Measured in EEG

RecruitingNAAges 18 Years - 85 YearsAllAssistance Publique - Hôpitaux de Paris
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In plain words

What the trial is, and whether it could suit you

With age, memory processes (encoding, consolidation and retrieval) as well as daytime vigilance are altered. Sleep is also impaired in older adults, notably slow waves that are known to play a key role in memory consolidation. Interestingly, some slow waves can also be detected in EEG recordings during wakefulness, and have been related to vigilance fluctuations. The investigators believe that slow waves, during both sleep and wakefulness, could constitute a common biomarker of sleep disturbances and daytime vigilance problems. A dysregulation of slow waves could thus explain the impact of aging on the different memory processes. Since alterations in memory capacity, attention, and sleep quality are further exacerbated in patients with Alzheimer's disease (AD), the investigators propose to study the links between aging (normal and pathological), sleep and daytime vigilance alterations,

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📋 Eligibility rules (as published)
* Common Inclusion Criteria for All Three Groups: Male or female Signed informed consent Affiliated with a social security system Native French speakers Completed at least 7 years of schooling (minimum 9th grade level) Specific Inclusion Criteria for Each Group: Patients: Age: 60 to 85 years Prodromal stage of Alzheimer's disease diagnosed according to international diagnostic criteria, characterized by a clinical phenotype of progressive amnesic syndrome of the hippocampal type, associated with biological markers of Alzheimer's disease 1) from lumbar puncture (Aβ \< 600 pg/mL and ptau \> 60 pg/mL)or 2) amyloid PET (positron emission tomography), or 3) with positive plasma Alzheimer's biomarkers Cognitively Healthy Seniors: Age: 60 to 85 years Age and sex matched with the Patients group "Cognitively healthy" status defined by a score of ≥ 26 on the MMSE (Mini-Mental State Examination), a score of ≥ 16 on the BREF (Batterie Rapide d'Efficience Frontale), and a score of ≥ 8 on the 5-word test Young Adults: Age: 18 to 35 years Sex matched with the Patients group "Cognitively healthy" status defined by a score of ≥ 26 on the MMSE (Mini-Mental State Examination), a score of ≥ 16 on the BREF (Batterie Rapide d'Efficience Frontale), and a score of ≥ 8 on the 5-word test
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What it tests

  • video polysomnography
  • Attention task
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Where

1 site
Maladies du Sommeil
Paris, France
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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