Safety and Performance Study of the Electroencephalographic Recording Device and Sound Emissions

Safety and Performance Study of the Electroencephalographic Recording Device and Sound Emissions MemoWave Aimed at Increasing Slow Brain Waves During Sleep to Improve Memory Consolidation in Subjects With Mild Cognitive Impairment

Safety and performance study of the MemoWave electroencephalographic and sound recording device to increase slow brain waves during sleep to improve memory consolidation in subjects with mild cognitive impairment

24 subjects aged between 40 and 85 years, presenting a mild cognitive disorder of the amnesic type (ie a memory complaint, a Mini Mental State ≥ 24 and a score ≤26 on free recall or ≤45 / 48 on total recall of the RLRI16 test) will be included;

Each patient spends 3 polysomnography nights at hospital: 1 night of habituation without Memowave device and next 2 nights with Memovave.

The device emits sounds to increase slow brain waves but Memowave emits sounds during only one of the two nights of test (night placebo vs night "verum"). The attribution of the night is randomized.

Inclusion Criteria:

• Subject presenting a mild cognitive disorder of the amnesic type, defined by a memory complaint, a Mini Mental State ≥ 24 and a score ≤26 on free recall or ≤45 / 48 on total recall) of the RLRI16 episodic verbal memory test
• At least 7 years of schooling

Exclusion Criteria:

• Severe psychiatric pathology
• Known neurological pathology
• High risk of apnea syndrome defined by at least 2 positive categories (each with a score ≥2) on the Berlin Questionnaire for Apnea Syndrome Screening
• High risk of behavioral disorder in REM sleep defined by an RBDSQ score> 5.
• Taking sleeping pills or antidepressants
• Severe heart disease or unbalanced diabetes