Huffmeijer Renske, Bakermans-Kranenburg Marian J, Alink Lenneke R A, van Ijzendoorn Marinus H
Centre for Child and Family Studies, Leiden University, P.O. Box 9555, 2300 RB Leiden, The Netherlands; Leiden Institute for Brain and Cognition (LIBC), Leiden University, P.O. Box 9600, 2300 RC Leiden, The Netherlands.
Centre for Child and Family Studies, Leiden University, P.O. Box 9555, 2300 RB Leiden, The Netherlands; Leiden Institute for Brain and Cognition (LIBC), Leiden University, P.O. Box 9600, 2300 RC Leiden, The Netherlands.
Physiol Behav. 2014 May 10;130:13-22. doi: 10.1016/j.physbeh.2014.03.008. Epub 2014 Mar 16.
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.
事件相关电位（ERP）的可靠性是决定将ERP成分与个体差异相关联的研究价值的一个重要因素。然而，令人惊讶的是，研究ERP可靠性的研究非常稀少。本研究在健康成年女性样本中，考察了ERP成分（VPP、N170、MFN、FRN、P3和LPP）对结合了表现反馈和情绪面孔的反馈刺激的重测信度。总体而言，根据所研究的成分，ERP波幅在4周的间隔内显示出足够至优异的重测信度。对多个电极的ERP波幅进行平均，比依赖单个电极能得到更可靠的测量结果。对多次试验进行平均可显著提高信度。我们建议，对于早期、时空分布较窄的成分（如VPP），至少包括30次试验，但对于后期分布较广的成分（如P3），则需要更多，至少60次试验。
