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Test-Retest Reliability of EEG Aperiodic Components in Resting and Mental Task States
Na Li1, Jingqi Yang1, Changquan Long2
1Key Laboratory of Cognition and Personality of the Ministry of Education, Southwest University, Chongqing, 400715, China.
Brain Topography
|July 17, 2024
Summary
Aperiodic activity in electroencephalography (EEG) shows reliable test-retest results across various conditions. Optimal reliability is achieved with longer data durations, resting states, and specific analytical methods.
Area of Science:
- Neuroscience
- Signal Processing
Background:
- Aperiodic activity, derived from the electroencephalography (EEG) power spectrum, reflects broadband spectral changes.
- Inconsistent test-retest reliability of aperiodic components has been reported, hindering their clinical application.
Purpose of the Study:
- To systematically evaluate the test-retest reliability of EEG aperiodic activity.
- To identify optimal parameters for reliable measurement of aperiodic components.
Main Methods:
- Aperiodic components were analyzed using Fitting Oscillations and One-Over-F (FOOOF) and Linear Mixed-Effects Regression (LMER).
- Reliability was assessed across varying data durations (1-5 min), cognitive states (eyes closed/open, mental arithmetic, memory recall, singing), and intervals (short and long).
Main Results:
- Aperiodic components demonstrated fair to excellent test-retest reliability (0.53–0.91) at both short and long intervals.
- Reliability was influenced by data duration, cognitive state, and analytical method.
Conclusions:
- EEG aperiodic activity exhibits good test-retest reliability under specific conditions.
- Recommendations for enhanced reliability include using data durations >3 min, the resting-eyes-closed state, mental arithmetic tasks, and the LMER method.
