Dreams and emotions during REM sleep—real-time observation in lucid healthy volunteers

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN15894975

Enrollment

Registered

2025-12-19

Start date

2026-01-05

Completion date

Unknown

Last updated

2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dreams and emotions during REM sleep Other

Interventions

Healthy volunteers will come three mornings (Visit 2, Visit 3, and Visit 4) to the sleep clinic, where they will be fitted with a 64-channel EEG and a conventional polysomnography, as well as sensors

Eligibility

Sex/Gender

All

Age

18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. French speaking 2. Having a French health insurance (social security) 3. Living in Paris and its suburb 4. No sleep problem 5. Lucid dreamers are welcome

Exclusion criteria

Exclusion criteria: 1. Psychiatric and neurologic drugs 2. Any sleep problem

Design outcomes

Primary

Measure	Time frame
Presence of naps during which the sleeper was able to complete at least one code in REM sleep reporting the emotional valence of the dream taking place measured at each visit	—

Secondary

Measure	Time frame
Measured at each visit 1. Distribution of emotional valences (positive, negative, neutral) in lucid REM sleep dreams, reported by muscle codes 2. Frequency of emotional changes versus emotional stability within the same REM sleep dream episode with at least two EMG codes recorded 3. Duration of emotional valence stability (in seconds) estimated from continuous sequences of codes of the same valence in survival analysis 4. Order of appearance of emotions within REM episodes 5. Differences in EEG, cardiac, respiratory, and eye movement measurements around periods of emotional coding according to different valences	—

Measure

Time frame

Measured at each visit 1. Distribution of emotional valences (positive, negative, neutral) in lucid REM sleep dreams, reported by muscle codes 2. Frequency of emotional changes versus emotional stability within the same REM sleep dream episode with at least two EMG codes recorded 3. Duration of emotional valence stability (in seconds) estimated from continuous sequences of codes of the same valence in survival analysis 4. Order of appearance of emotions within REM episodes 5. Differences in EEG, cardiac, respiratory, and eye movement measurements around periods of emotional coding according to different valences

—

Countries

France

Contacts

Public ContactIsabelle Arnulf

isabelle.arnulf@aphp.fr+33 1 42 16 77 03

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026