PhD Scientific Days 2026

Poster Session 2.K - Mental Health Sciences

Sleep Timing Regulates Mood: A Multilevel-EEG Study of Daily Life

Előadó neve

Pierson-Bartel, Róbert

Neptune code

CNBWA5

Előadó munkahelye

Semmelweis University, Institute of Behavioural Sciences

Előadó telefonszáma

06706765910

Előadó e-mail címe

robert.b.pierson@gmail.com

Az előadás címe

Sleep Timing Regulates Mood: A Multilevel-EEG Study of Daily Life

Szerző(k) neve és munkahelye

Róbert Pierson-Bartel¹

1: Semmelweis University, Institute of Behavioural Sciences

Bemutatás módja

Poszter

Szekció

Poster Session 2.K - Mental Health Sciences

Language of the presentation

English

Preferred session

Mental Health Sciences

Összefoglaló szövege

Introduction
Sleep and mood are two homeostatically regulated systems essential for mental and physical health. Understanding how sleep timing and mood dynamically influence each other, and which individual traits moderate this coupling, can clarify mechanisms of mood regulation.
Aims
To examine bidirectional associations between sleep and daily mood under naturalistic conditions using objective sleep measurements and to identify personality and psychiatric traits that moderate these relationships.
Method
Data came from the Budapest Sleep, Experiences and Traits Study, a 7-day observational study of 258 healthy adults (1,718 nights). Objective sleep was recorded using Dreem2 EEG headbands, and subjective sleep quality was assessed by the Groningen Sleep Quality Scale. Daily mood was measured with the Positive and Negative Affect Schedule. Bidirectional multilevel models tested within-person associations between affect and sleep, while random slopes models examined individual differences.
Results
A robust negative feedback loop emerged between sleep timing and positive affect: higher evening positive affect predicted later sleep onset (r = 0.15, p < 0.001), while later sleep onset predicted lower next-day positive affect (r = −0.19, p < 0.001). This bidirectional link was absent for negative affect and objective sleep quality. Trait activity (r = −0.21), extraversion (r = −0.28), and conscientiousness (r = −0.18) amplified the effect, whereas neuroticism (r = 0.16) and alexithymia (r = 0.17) attenuated it.
Conclusion
Sleep timing, rather than sleep quality, plays a central role in daily mood regulation through a homeostatic feedback mechanism. Personality and affective traits shape this loop, highlighting sleep timing as a potential target for mood stabilization.
Funding
This was supported by the National Research, Development and Innovation Office—NKFIH (grant number: 138935). Research support was also provided by the Culture and Innovation Ministry of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-NKTA funding scheme (project nr.: TKP2021-NKTA-47), and the CELSA Research Fund (CELSA/24/019).
Further support was granted by the National Academy of Scientist Education Program of the National Biomedical Foundation under the sponsorship of the Hungarian Ministry of Culture and Innovation.

University

Semmelweis University

Supervisor

Dr. Ujma Przemysław Péter

Publication of my abstract

I do not give consent to the publication of my abstract on the website of the congress.

phd.section.field

in doctoral studies after complex exam (PhD)

Kind

Szabad

Status

elfogadva

Accepted presentation method

poszter

Előadás fájl jóváhagyás

nem rendelkezett róla

Előadó

9058

Start

18:30

End

18:33