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- W3189318538 endingPage "21.2021" @default.
- W3189318538 startingPage "ENEURO.0246" @default.
- W3189318538 abstract "Full-band DC recordings enable recording of slow electrical brain signals that are severely compromised during conventional AC recordings. However, full-band DC recordings may be limited by the amplifier’s dynamic input range and the loss of small amplitude high-frequency signals. Recently, Neuralynx has proposed full-band recordings with inverse filtering for signal reconstruction based on hybrid AC/DC-divider RRC filters that enable only partial suppression of DC signals. However, the quality of signal reconstruction for biological signals has not yet been assessed. Here, we propose a novel digital inverse filter based on a mathematical model describing RRC filter properties, which provides high computational accuracy and versatility. Second, we propose procedures for the evaluation of the inverse filter coefficients, adapted for each recording channel to minimize the error caused by the deviation of the real values of the RRC filter elements from their nominal values. We demonstrate that this approach enables near 99% reconstruction quality of high-potassium-induced cortical spreading depolarizations (SDs), endothelin-induced ischemic negative ultraslow potentials (NUPs), and whole-cell recordings of membrane potential using RRC filters. The quality of the reconstruction was significantly higher than with the existing inverse filtering procedures. Thus, RRC filters with inverse filtering are optimal for full-band EEG recordings in various applications." @default.
- W3189318538 created "2021-08-16" @default.
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- W3189318538 date "2021-07-01" @default.
- W3189318538 modified "2023-10-18" @default.
- W3189318538 title "Full-Band EEG Recordings Using Hybrid AC/DC-Divider Filters" @default.
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- W3189318538 doi "https://doi.org/10.1523/eneuro.0246-21.2021" @default.
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