Bright light exposure reduces negative affect and modulates EEG activity in sleep-deprived and well-rested adolescents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023752%3A_____%2F25%3A43921651" target="_blank" >RIV/00023752:_____/25:43921651 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11120/25:43929146 RIV/00216208:11310/25:10506581 RIV/68407700:21460/25:00386735 RIV/68407700:21720/25:00386735

Výsledek na webu

<a href="https://www.frontiersin.org/journals/behavioral-neuroscience/articles/10.3389/fnbeh.2025.1673093/full" target="_blank" >https://www.frontiersin.org/journals/behavioral-neuroscience/articles/10.3389/fnbeh.2025.1673093/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fnbeh.2025.1673093" target="_blank" >10.3389/fnbeh.2025.1673093</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bright light exposure reduces negative affect and modulates EEG activity in sleep-deprived and well-rested adolescents

Popis výsledku v původním jazyce

Introduction This study investigated whether a single morning session of bright light exposure modulates alertness, cognition, mood, and EEG activity in well-rested and partially sleep-deprived adolescents.Methods Forty-seven subjects (15-21 years) were assigned to a well-rested (8 h sleep; 9 men, 15 women) or a sleep-deprived group (4 h sleep; 11 men, 12 women). All underwent 30 min of morning bright light exposure, with EEG, cognitive testing, and ratings of sleepiness and affect conducted pre- and post-intervention. Behavioral and electrophysiological changes were compared within and between groups. Associations between changes in EEG activity and behavioral outcomes were explored using correlation analyses.Results Bright light significantly reduced negative affect and improved Digit Span Forward task performance. No changes were observed in positive affect, subjective sleepiness, or Digit Span Backward scores. EEG analysis revealed decreased delta activity in the anterior cingulate cortex and increased beta activity in the right insula and fronto-parietal regions. Behavioral and EEG effects were similar across groups; however, only in the sleep-deprived group changes in beta activity significantly correlated with reduced negative affect.Discussion These results suggest that bright light may acutely enhance emotional state, cognitive performance, and cortical arousal in adolescents. The link between beta activity and affective improvement under sleep deprivation suggests a potential mechanism by which light supports emotional regulation.

Název v anglickém jazyce

Bright light exposure reduces negative affect and modulates EEG activity in sleep-deprived and well-rested adolescents

Popis výsledku anglicky

Introduction This study investigated whether a single morning session of bright light exposure modulates alertness, cognition, mood, and EEG activity in well-rested and partially sleep-deprived adolescents.Methods Forty-seven subjects (15-21 years) were assigned to a well-rested (8 h sleep; 9 men, 15 women) or a sleep-deprived group (4 h sleep; 11 men, 12 women). All underwent 30 min of morning bright light exposure, with EEG, cognitive testing, and ratings of sleepiness and affect conducted pre- and post-intervention. Behavioral and electrophysiological changes were compared within and between groups. Associations between changes in EEG activity and behavioral outcomes were explored using correlation analyses.Results Bright light significantly reduced negative affect and improved Digit Span Forward task performance. No changes were observed in positive affect, subjective sleepiness, or Digit Span Backward scores. EEG analysis revealed decreased delta activity in the anterior cingulate cortex and increased beta activity in the right insula and fronto-parietal regions. Behavioral and EEG effects were similar across groups; however, only in the sleep-deprived group changes in beta activity significantly correlated with reduced negative affect.Discussion These results suggest that bright light may acutely enhance emotional state, cognitive performance, and cortical arousal in adolescents. The link between beta activity and affective improvement under sleep deprivation suggests a potential mechanism by which light supports emotional regulation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30103 - Neurosciences (including psychophysiology)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Frontiers in Behavioral Neuroscience

ISSN

1662-5153

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

1673093

Stát vydavatele periodika

SE - Švédské království

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001641521400001

EID výsledku v databázi Scopus

2-s2.0-105025564952