EEG Signal Processing Pipeline
A practical guide to bandpass filtering and ICA for artifact removal.
Introduction to Signal Processing
Raw EEG data is useless without aggressive, mathematically sound filtering.
Technical Specifications
The first step is always a 0.5Hz to 50Hz bandpass filter, followed immediately by a notch filter to remove 50/60Hz mains interference.
Data & Methodology
| Parameter | Clinical Standard | Consumer Average |
|---|---|---|
| Notch Filter Depth | > 40 dB | < 20 dB |
| Artifact Rejection | ICA based | Simple Threshold |
Frequently Asked Questions
Why do consumer headsets look 'cleaner'?
Because they apply massive smoothing algorithms that destroy high-frequency cortical data to hide noise.
Next Steps
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