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waveform and the phase spectrum

Published: November 22, 2020

the power spectrum shows only half the picture: signals which differ in only with respect to phase shifts of their constituent components will have the same power spectrum. (here: 10 Hz sine wave + phase shifted 20 Hz sine wave for simulating different waveform shape) pic.twitter.com/nwTkir23JX

— Natalie Schaworonkow (@nschawor) November 23, 2020

Tags: signal-processing, spectral-analysis, waveform

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Bluesky for neuroscientists

Published: April 19, 2026

I created a few custom feeds for Bluesky based on regular expressions. If a post matches certain patterns, it will get added to the feed (so the occasional stray post appears also). Current feeds include:

  • neuroscience training courses for summer courses and workshops
  • job feed based on keywords: cog/neuro jobs
  • brain rhythms fetching posts about neural oscillations.

Also I played around with building a Bluesky labeler for neuroscience methods. Subscribe to: neuromethods.bsky.social and like the corresponding post to have a shiny methods label appear in your profile. People with specific method labels will be automatically added to method-specific starter packs, e.g. here is the EEG starter pack.

MEG artifacts: railway traction power

Published: April 10, 2026

more MEG artefacts: the tram runs in ~200 meter distance from the MEG lab here. even though the MEG sensors are shielded by a few tons of metal, they still pick up the railway traction power signal (at 16.67 Hz in Germany), a demo of their high sensitivity.

[image or embed]

— Natalie Schaworonkow (@nschawor.bsky.social) 10 April 2026 at 15:05

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