Enhanced brainstem and cortical evoked response amplitudes: single-trial covariance analysis

Perceptual and Motor Skills
G C Galbraith

Abstract

The purpose of the present study was to develop analytic procedures that improve the definition of sensory evoked response components. Such procedures could benefit all recordings but would especially benefit difficult recordings where many trials are contaminated by muscle and movement artifacts. First, cross-correlation and latency adjustment analyses were applied to the human brainstem frequency-following response and cortical auditory evoked response recorded on the same trials. Lagged cross-correlation functions were computed, for each of 17 subjects, between single-trial data and templates consisting of the sinusoid stimulus waveform for the brainstem response and the subject's own smoothed averaged evoked response P2 component for the cortical response. Trials were considered in the analysis only if the maximum correlation-squared (r2) exceeded .5 (negatively correlated trials were thus included). Identical correlation coefficients may be based on signals with quite different amplitudes, but it is possible to assess amplitude by the nonnormalized covariance function. Next, an algorithm is applied in which each trial with negative covariance is matched to a trial with similar, but positive, covariance and these matched-tr...Continue Reading

References

Feb 1, 1975·Electroencephalography and Clinical Neurophysiology·J T MarshJ C Smith
Feb 1, 1975·Electroencephalography and Clinical Neurophysiology·G Pfurtscheller, R Cooper
Nov 1, 1975·Electroencephalography and Clinical Neurophysiology·J C SmithW S Brown
Jun 1, 1977·Electroencephalography and Clinical Neurophysiology·D G Wastell
Nov 1, 1978·Medical & Biological Engineering & Computing·J I Aunon, R W Sencaj
May 1, 1977·IEEE Transactions on Bio-medical Engineering·C D McGillem, J I Aunon
Jul 1, 1990·Electroencephalography and Clinical Neurophysiology·G C Galbraith, W S Brown
Jun 1, 1987·Electroencephalography and Clinical Neurophysiology·M J Wilson, R A Dobie
Mar 1, 1988·Psychophysiology·J MöcksD T Pham
Dec 1, 1972·Electroencephalography and Clinical Neurophysiology·H Weinberg, R Cooper
Feb 1, 1966·Electroencephalography and Clinical Neurophysiology·C W PalmerA W Lee
May 1, 1967·Electroencephalography and Clinical Neurophysiology·A J DerbyshireC W Palmer
Oct 1, 1984·Electroencephalography and Clinical Neurophysiology·G C Galbraith
Nov 1, 1984·The Journal of the Acoustical Society of America·R A Dobie, M J Wilson
Nov 1, 1980·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·R A Dobie, B M Clopton
Apr 1, 1995·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·G C Galbraith, B Q Doan
Oct 1, 1993·Biological Psychology·G C Galbraith, C Arroyo
Jul 17, 1998·Neuroreport·G C GalbraithT A Mullen
Jan 1, 1999·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·W S BrownG C Galbraith

Citations

Mar 26, 2014·Computer Methods and Programs in Biomedicine·Joaquin T ValderramaJose Luis Vargas

Related Concepts

Brain Stem
Electroencephalogram
Somatosensory Evoked Potentials

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.

Related Papers

Audiology : Official Organ of the International Society of Audiology
E VannierJ F Motsch
Computer Methods and Programs in Biomedicine
Ervin Sejdić, Lewis A Lipsitz
© 2021 Meta ULC. All rights reserved