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Related Experiment Video

Updated: Jul 31, 2025

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Published on: April 7, 2020

Daytime affect and sleep EEG activity: A data-driven exploration.

Jin-Xiao Zhang¹, Maia Ten Brink¹, Yan Yan¹

¹Department of Psychology, Stanford University, Stanford, California, USA.

Journal of Sleep Research

|May 8, 2023

Summary

This summary is machine-generated.

Positive daytime affect may lead to more stable rapid eye movement (REM) sleep. This study explored links between pre-sleep mood and sleep electroencephalogram (EEG) activity, finding a connection with REM sleep alpha waves.

Keywords:

EEG power affect alpha band data-driven rapid eye movement sleep sleep

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Published on: August 8, 2019

Area of Science:

Neuroscience
Psychology
Sleep Science

Background:

Bidirectional links between affect (mood) and sleep are theorized.
Few studies have directly examined the relationship between pre-sleep affect, sleep electroencephalogram (EEG) activity, and post-sleep affect.

Purpose of the Study:

To systematically explore correlations between pre-/post-sleep affect and EEG activity during sleep.
To investigate the association between daytime affect and specific sleep EEG patterns.

Main Methods:

Community sample of 51 adults.
Measured positive and negative affect before sleep and after waking.
Recorded 1 night of in-home EEG, analyzing power spectra during REM and NREM sleep.
Used Fourier transforms and correlation analyses, including cluster-based permutation tests.

Main Results:

Exploratory analysis revealed correlations between affect and sleep EEG power.
A significant negative correlation was found between pre-sleep positive affect and alpha frequency EEG power during REM sleep.
This suggests higher positive affect is linked to less fragmented REM sleep.

Conclusions:

The study provides preliminary evidence for a link between daytime positive affect and more consolidated REM sleep.
Results lay the groundwork for future research confirming the relationship between affect and sleep EEG activity.