Remove artefacts based of an envelope #3715
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We already have remove_artifacts.py with the US spelling of artifacts. Should probably keep the spelling unified for all artifact based stuff. (Chris is really going to hate me). |
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samuelgarcia
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Dec 22, 2025
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@alejoe91 I am OK with this. Do you want to read again ? and validate ? |
alejoe91
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samuelgarcia
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Dec 23, 2025
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Because this code has been asked by several people, I have the feeling that there might be the need for such a preprocessing Node, to remove artefacts. The idea is the following: the node creates an low-pass filtered version of the rectified signal, compute the noise levels of this new signal, and detect thresholds crossings (onsets/offsets). We are then using these detected time periods to feed a silence_periods nodes, such that periods spotted by the enveloppe will be blanked.
Do you think such a node can be useful? For people using tetrode/few channels it seems to matter quite a lot. For denser probes, this could be debatted, and especially one could think about extending the silence_periods node to work on a per_channel basis instead of across all channels. But this could be debated