spatial mixing simulation

November 24, 2020

EEG analysis in sensor space may yield distorted measures. 2 rhythms (at red & blue locations) with slightly different peak frequency mix across space. the power spectrum of the signal recorded at the green electrode now has 2 peaks in the alpha band. 🤔 pic.twitter.com/jc3HMjMWNs
— Natalie Schaworonkow (@nschawor) November 25, 2020

oscillation baseline shift and 1/f-exponents

October 16, 2025

ok, imagine you have an oscillation that is not symmetric around 0 (small direct current shift) with some amplitude modulation, for instance with 1/f-dynamics. ➡️ then these 1/f-dynamics will show up in low frequency part of spectrum (red); in addition to around oscillation peak (yellow).

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— Natalie Schaworonkow (@nschawor.bsky.social) October 16, 2025 at 3:58 PM

beta as bursts / beta as a rhythm

June 06, 2024

"beta-activity as bursts", I am def 💯 OK with that.

but imho the pendulum has swung too far in the direction that all beta activity equals close to 1-2 cycle bursts. so just to illustrate diversity, here is some more sustained beta-activity, resting-state EEG.
〰️🙂〰️ pic.twitter.com/s9SnbdQy6j
— Natalie Schaworonkow (@nschawor) June 6, 2024

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oscillation baseline shift and 1/f-exponents

beta as bursts / beta as a rhythm