Event Related Potential Signal Capture Can Be Enhanced through Dynamic SNR-Weighted Channel Pooling.

ABSTRACT:

Background

Electroencephalography (EEG)-derived event-related potentials (ERPs) provide information about a variety of brain functions, but often suffer from low inherent signal-to-noise ratio (SNR). To overcome the low SNR, techniques that pool data from multiple sensors have been applied. However, such pooling implicitly assumes that the SNR among sensors is equal, which is not necessarily valid. This study presents a novel approach for signal pooling that accounts for differential SNR among sensors.

Methods

The new technique involves pooling together signals from multiple EEG channels weighted by their respective SNRs relative to the overall SNR of all channels. We compared ERP responses derived using this new technique with those derived using both individual channels as

SUBMITTER: Hajra SG 

PROVIDER: S-EPMC8588067 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature