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

ABSTRACT:

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 affe

SUBMITTER: Koprivova J 

PROVIDER: S-EPMC12711866 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature