influence of SNR on waveform estimates

October 04, 2019

Measured waveform shape in neuronal oscillations depends on signal-to-noise ratio. Only for high amplitude, peak-trough asymmetry can be reliably detected. Harmonic frequencies cancel fast... 3 subjects, EEG resting state data, channel: O1, each dot = 1 alpha-oscillation cycle. pic.twitter.com/y5dY67lVFs
— Natalie Schaworonkow (@nschawor) October 4, 2019

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

impact of crosstalk in MEG/EEG

May 16, 2024

MEG/EEG: "we use source reconstruction" – all problems solved?

plotted here: crosstalk – possible contribution from other locations to reconstructed activity @ red dot. no strong activity at these locations: 👍 otherwise: 🫠
➡️crosstalk can be from distant locations pic.twitter.com/FetHqq5LoZ
— Natalie Schaworonkow (@nschawor) May 16, 2024

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beta as bursts / beta as a rhythm

impact of crosstalk in MEG/EEG