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A parametric method of identification of single-trial event-related potentials in the brain

STS Instructor Authored by Giuseppe A. Chiarenza

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Check out this Knowledge Base article from StressTherapy Solutions: A parametric method of identification of single-trial event-related potentials in the brain.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Authors
Cerutti S, Chiarenza G, Liberati D, Mascellani P, Pavesi G
Journal
IEEE Transactions on Biomedical Engineering
Year
1988
Protocol
single-trial ERP signal processing

Key findings

  • Proposes an ARX (autoregressive with exogenous input) model for single-trial ERP estimation
  • Background EEG and EOG are modelled as separate inputs rather than simply averaged away
  • Greatly improved signal-to-noise ratio on single trials in simulations and real data
  • Particularly good at reducing eye-movement artifacts

DOI 10.1109/10.7271 → PubMed 3169822 →

A technical paper presenting a way to pull out an event-related potential from a single trial instead of averaging many trials. The method uses an autoregressive model with external inputs, taking the averaged response as a template and treating background EEG and eye-movement signals as noise sources to be modelled. Simulations and real recordings showed much better signal-to-noise in individual trials and effective removal of eye artifacts.