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Reliability of event-related potentials: The influence of number of trials and electrodes

Abstract The reliability of event-related potentials (ERPs) is an important factor determining the value of studies relating ERP components to individual differences. However, studies examining the reliability of ERPs are surprisingly scarce. The current study examines the test–retest reliability of...

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Published in:	Physiology & behavior 2014-05, Vol.130, p.13-22
Main Authors:	Huffmeijer, Renske, Bakermans-Kranenburg, Marian J, Alink, Lenneke R.A, van IJzendoorn, Marinus H
Format:	Article
Language:	English
Subjects:	Adolescent Behavioral psychophysiology Biological and medical sciences Brain - physiology Electrodes Electroencephalography - instrumentation Electroencephalography - methods Emotional facial expressions Emotions - physiology Event-related potentials Event-Related Potentials, P300 Evoked Potentials Facial Expression Feedback Female Fundamental and applied biological sciences. Psychology Humans Neuropsychological Tests Pattern Recognition, Visual - physiology Photic Stimulation Psychiatry Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Reproducibility of Results Retest reliability Time Young Adult
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creator	Huffmeijer, Renske Bakermans-Kranenburg, Marian J Alink, Lenneke R.A van IJzendoorn, Marinus H
description	Abstract The reliability of event-related potentials (ERPs) is an important factor determining the value of studies relating ERP components to individual differences. However, studies examining the reliability of ERPs are surprisingly scarce. The current study examines the test–retest reliability of ERP components (VPP, N170, MFN, FRN, P3, and LPP) in response to feedback stimuli combining performance feedback with emotional faces in a sample of healthy female adults. In general, ERP amplitudes showed adequate to excellent test-retest reliability across a 4-week interval, depending on the component studied. Averaging ERP amplitudes across several electrodes yielded more reliable measurements than relying on a single electrode. Averaging across multiple trials substantially improved reliability. We recommend including at least 30 trials for early, spatio-temporally narrowly distributed components (such as VPP), but substantially more, at least 60 trials, for later, broadly distributed components such as the P3.
doi_str_mv	10.1016/j.physbeh.2014.03.008
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subjects	Adolescent Behavioral psychophysiology Biological and medical sciences Brain - physiology Electrodes Electroencephalography - instrumentation Electroencephalography - methods Emotional facial expressions Emotions - physiology Event-related potentials Event-Related Potentials, P300 Evoked Potentials Facial Expression Feedback Female Fundamental and applied biological sciences. Psychology Humans Neuropsychological Tests Pattern Recognition, Visual - physiology Photic Stimulation Psychiatry Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Reproducibility of Results Retest reliability Time Young Adult
title	Reliability of event-related potentials: The influence of number of trials and electrodes
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