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Latency as a Region Contrast: Measuring ERP Latency Differences with Dynamic Time Warping

Zoumpoulaki, Alexia, Alsufyani, Abdulmajeed, Filetti, Marco, Brammer, Mick, Bowman, Howard (2015) Latency as a Region Contrast: Measuring ERP Latency Differences with Dynamic Time Warping. Psychophysiology, . pp. 1-46. ISSN 0048-5772. (KAR id:51064)

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Abstract

Methods for measuring onset latency contrasts are evaluated against a new method utilizing the dynamic time warping (DTW) algorithm. This new method allows latency to be measured across a region instead of single point. We use computer simulations to compare the methods' power and Type I error rates under different scenarios. We perform per-participant analysis for different signal-to-noise ratios and two sizes of window (broad vs. narrow). In addition, the methods are tested in combination with single-participant and jackknife average waveforms for different effect sizes, at the group level. DTW performs better than the other methods, being less sensitive to noise as well as to placement and width of the window selected.

Item Type: Article
Subjects: Q Science
Q Science > QA Mathematics (inc Computing science)
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: Howard Bowman
Date Deposited: 16 Oct 2015 18:27 UTC
Last Modified: 16 Feb 2021 13:28 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51064 (The current URI for this page, for reference purposes)
Bowman, Howard: https://orcid.org/10:0000-0003-4736-1869
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