Test-Retest Reliability of Single Spectral Power and Spectral Power Ratios in Relative and Absolute Values.

ABSTRACT:

Purpose

The current study provides the first systematic evaluation of the test-retest reliability of electroencephalography (EEG) spectral power ratios alongside absolute and relative spectral power using two independent datasets. This approach aims to identify reproducible and clinically meaningful EEG features for longitudinal and diagnostic applications.

Method

Two separate datasets of healthy adults were analyzed. Dataset 1 included 60 participants with EEGs recorded across three sessions (two on the same day and one month later), while Dataset 2 involved 74 participants recorded 1 h apart. Absolute, relative, and ratio-based spectral features were computed across five brain regions using fast Fourier transform (FTP). Intraclass correlation coefficients (ICCs) were calcu

SUBMITTER: Chang J 

PROVIDER: S-EPMC12589806 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature