Optimal digital filters for analyzing the mid-latency auditory P50 event-related potential in patients with Alzheimer’s disease

•Filtering may severely distort the time-domain representations of ERP waveforms.•Inappropriate filter parameters can lead to false conclusions.•Careful filter design results in improved signal-to-noise ratio of ERP waveforms.•The effect of different filter settings on the P50 component is investiga...

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