| Publication type: | Article in scientific journal |
| Type of review: | Peer review (publication) |
| Title: | Test–retest reliability of EEG spectra during a working memory task |
| Authors: | Näpflin, Markus Wildi, Marc Sarnthein, Johannes |
| DOI: | 10.1016/j.neuroimage.2008.08.028 |
| Published in: | NeuroImage |
| Volume(Issue): | 43 |
| Issue: | 4 |
| Page(s): | 687 |
| Pages to: | 693 |
| Issue Date: | 2008 |
| Publisher / Ed. Institution: | Elsevier |
| ISSN: | 1053-8119 1095-9572 |
| Language: | English |
| Subjects: | Electroencephalography; Short-term memory; Mental recall; Reproducibility of results; Sensitivity and specificity; Algorithms; Task performance and analysis |
| Subject (DDC): | 616.8: Neurology, diseases of nervous system |
| Abstract: | The inter-individual variation of EEG spectra is large even for the same cognitive task. We asked whether task-induced EEG spectra remain stable over more than a year. We recorded EEG in 41 healthy adults who performed a modified Sternberg task. In 20 subjects EEG was recorded in a second session with retest intervals 12-40 months. For electrodes AFz, Cz and Pz peak frequency and peak height were determined. We compared the curve shape of power spectra by regressing spectra pairwise onto each other and calculated a t-value. The t-value and pairwise differences in peak frequency and peak height between all sessions were entered into a generalized linear model (GLM) where binary output represents the recognition probability. The results were cross-validated by out-of-sample testing. Of the 40 sessions, 35 were correctly matched. The shape of power spectra contributed most to recognition. Out of all 2400 pairwise comparisons 99.3% were correct, with sensitivity 87.5% and specificity 99.5%. The intra-individual stability is high compared to the inter-individual variation. Thus, interleaved EEG-fMRI measurements are valid. Furthermore, longitudinal effects on cognitive EEG can be judged against the intra-individual variability in subjects. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/13631 |
| Fulltext version: | Published version |
| License (according to publishing contract): | Licence according to publishing contract |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Data Analysis and Process Design (IDP) |
| Appears in collections: | Publikationen School of Engineering |
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Näpflin, M., Wildi, M., & Sarnthein, J. (2008). Test–retest reliability of EEG spectra during a working memory task. NeuroImage, 43(4), 687–693. https://doi.org/10.1016/j.neuroimage.2008.08.028
Näpflin, M., Wildi, M. and Sarnthein, J. (2008) ‘Test–retest reliability of EEG spectra during a working memory task’, NeuroImage, 43(4), pp. 687–693. Available at: https://doi.org/10.1016/j.neuroimage.2008.08.028.
M. Näpflin, M. Wildi, and J. Sarnthein, “Test–retest reliability of EEG spectra during a working memory task,” NeuroImage, vol. 43, no. 4, pp. 687–693, 2008, doi: 10.1016/j.neuroimage.2008.08.028.
NÄPFLIN, Markus, Marc WILDI und Johannes SARNTHEIN, 2008. Test–retest reliability of EEG spectra during a working memory task. NeuroImage. 2008. Bd. 43, Nr. 4, S. 687–693. DOI 10.1016/j.neuroimage.2008.08.028
Näpflin, Markus, Marc Wildi, and Johannes Sarnthein. 2008. “Test–Retest Reliability of EEG Spectra during a Working Memory Task.” NeuroImage 43 (4): 687–93. https://doi.org/10.1016/j.neuroimage.2008.08.028.
Näpflin, Markus, et al. “Test–Retest Reliability of EEG Spectra during a Working Memory Task.” NeuroImage, vol. 43, no. 4, 2008, pp. 687–93, https://doi.org/10.1016/j.neuroimage.2008.08.028.
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