Spectral Parameterization Simulator

Simulated Signal

Sampling rate 128 Hz Duration 120 s Offset 2.20 Exponent 2.10 Knee 15.0 Noise 0.04

Preprocessing / PSD

Low cut 0.5 Hz High cut Welch window 10.0 s Welch overlap 50%

FOOOF Settings

X-axis scale

Axis scale changes visualization only; uploaded EEG opens in linear view by default.

Aperiodic mode Fit min 0.5 Hz Fit max 30 Hz Max peaks 5 Peak threshold 2.0 Peak width min 0.5 Hz Peak width max 5.0 Hz R² warning threshold 0.90

Bands

Alpha low 8.0 Hz Alpha high 12.0 Hz Peak-of-interest high 12.0 Hz

Simulated Peaks

Number of generated peaks 2

© 2026 Carolina Frederico. All rights reserved. Educational simulation only. Not intended for clinical decision-making. Current browser engine is FOOOF-like and should be validated against Python FOOOF/specparam for research analyses.

Offset--

Exponent--

Knee--

R²--

Error--

Peaks--

Alpha peak--

QC--

Detected peaks

#	CF (Hz)	Power	Bandwidth (Hz)	Band

Spectral fit

Detected peaks