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Latency as a region contrast: Measuring ERP latency differences with Dynamic Time Warping

Zoumpoulaki, Alexia, Alsufyani, A., Filetti, M., Brammer, M. and Bowman, H. 2015. Latency as a region contrast: Measuring ERP latency differences with Dynamic Time Warping. Psychophysiology 52 (12) , pp. 1559-1576. 10.1111/psyp.12521

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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
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Publisher: Blackwell Publishing
ISSN: 0048-5772
Date of Acceptance: 21 July 2015
Last Modified: 06 Nov 2018 11:54
URI: http://orca.cf.ac.uk/id/eprint/95609

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