TY - JOUR
T1 - Reliability of event-related potentials
T2 - The influence of number of trials and electrodes
AU - Huffmeijer, Renske
AU - Bakermans-Kranenburg, Marian J.
AU - Alink, Lenneke R.A.
AU - Van IJzendoorn, Marinus H.
PY - 2014/5/10
Y1 - 2014/5/10
N2 - 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.
AB - 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.
KW - Emotional facial expressions
KW - Event-related potentials
KW - Feedback
KW - Retest reliability
UR - http://www.scopus.com/inward/record.url?scp=84897473045&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897473045&partnerID=8YFLogxK
U2 - 10.1016/j.physbeh.2014.03.008
DO - 10.1016/j.physbeh.2014.03.008
M3 - Article
C2 - 24642000
AN - SCOPUS:84897473045
VL - 130
SP - 13
EP - 22
JO - Physiology and Behavior
JF - Physiology and Behavior
SN - 0031-9384
ER -