Phase weighting: A method to improve objective detection of steady-state evoked potentials

Robert A. Dobie, Michael J. Wilson

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Objective response detection statistics such as magnitude-squared coherence (MSC) reflect the degree to which subaverage phases are clustered or dispersed, but not their agreement with an expected, or target, phase. Using signal-plus-noise simulations and human 40-Hz auditory evoked potentials, we tested MSC performance with and without phase weighting, in which MSC values were multiplied by weights related to the phase error between measured phase and target phase. Phase weighting improved MSC performance for both simulated and 40-Hz auditory evoked potential data. However, the improvement was greater for the simulations, probably because target phase was precisely known.

Original languageEnglish (US)
Pages (from-to)94-98
Number of pages5
JournalHearing Research
Volume79
Issue number1-2
DOIs
StatePublished - Sep 1994

Keywords

  • Magnitude-squared coherence
  • Phase weighting
  • Steady-state evoked potentials

ASJC Scopus subject areas

  • Sensory Systems

Fingerprint Dive into the research topics of 'Phase weighting: A method to improve objective detection of steady-state evoked potentials'. Together they form a unique fingerprint.

Cite this