Is there a pink noise(1/f noise) at the EEG electrode-skin interface?

SilverSilver
edited July 2023 in Electrodes

Hi
Is there a pink noise(1/f noise) at the EEG electrode-skin interface? Is any amplitude data regarding it available and how to reduce the noise?

Comments

  • wjcroftwjcroft Mount Shasta, CA

    Hi Silver,

    The 1/f noise does NOT appear to be related to skin interface issues. Rather it is evidence of intrinsic brain network activity. Here is a related paper:

    https://www.sciencedirect.com/science/article/pii/S105381191930895X
    "Decomposing alpha and 1/f brain activities reveals their differential associations with cognitive processing speed"

    In general EEG signal processing (over most of the past) has just accepted that 1/f trend is present, and not tried to 'remove' it before processing the EEG. However some recent research does try to draw conclusions about what are 1/f processes by taking these into account.

    Regards, William

  • wjcroftwjcroft Mount Shasta, CA
    edited July 2023

    Another paper: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8354524/

  • SilverSilver
    edited July 2023

    Thank you William

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