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Comparison of different cortical connectivity estimators for high‐resolution EEG recordings
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The aim of this work is to characterize quantitatively the performance of a body of techniques in the frequency domain for the estimation of cortical connectivity from high‐resolution EEG recordings in different operative conditions commonly encountered in practice. Connectivity pattern estimators investigated are the Directed Transfer Function (DTF), its modification known as direct DTF (dDTF) and the Partial Directed Coherence (PDC). Predefined patterns of cortical connectivity were simulated and then retrieved by the application of the DTF, dDTF, and PDC methods. Signal‐to‐noise ratio (SNR) and length (LENGTH) of EEG epochs were studied as factors affecting the reconstruction of the imposed connectivity patterns. Reconstruction quality and error rate in estimated connectivity patterns were evaluated by means of some indexes of quality for the reconstructed connectivity pattern. The error functions were statistically analyzed with analysis of variance (ANOVA). The whole methodology was then applied to high‐resolution EEG data recorded during the well‐known Stroop paradigm. Simulations indicated that all three methods correctly estimated the simulated connectivity patterns under reasonable conditions. However, performance of the methods differed somewhat as a function of SNR and LENGTH factors. The methods were generally equivalent when applied to the Stroop data. In general, the amount of available EEG affected the accuracy of connectivity pattern estimations. Analysis of 27 s of nonconsecutive recordings with an SNR of 3 or more ensured that the connectivity pattern could be accurately recovered with an error below 7% for the PDC and 5% for the DTF. In conclusion, functional connectivity patterns of cortical activity can be effectively estimated under general conditions met in most EEG recordings by combining high‐resolution EEG techniques, linear inverse estimation of the cortical activity, and frequency domain multivariate methods such as PDC, DTF, and dDTF. Hum. Brain Mapp, 2007. © 2006 Wiley‐Liss, Inc.
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Cited by
Hillebrand, A., Barnes, G. R., Bosboom, J. L., Berendse, H. W., & Stam, C. J. (2012) · NeuroImage · doi:10.1016/j.neuroimage.2011.11.005 · Cited by 416
A critical assessment of connectivity measures for EEG data: A simulation study
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Self-citationeConnectome: A MATLAB toolbox for mapping and imaging of brain functional connectivity
He, B., Dai, Y., Astolfi, L., Babiloni, F., Yuan, H., & Yang, L. (2011) · Journal of Neuroscience Methods · doi:10.1016/j.jneumeth.2010.11.015 · Cited by 229
“Previous studies from our group and others have demonstrated its applications to study causal sources in normal brain functions (Babiloni et al., 2005; Astolfi et al., 2007) or abnormal brain disorders (e.”
BackgroundSelf-citationTracking the Time-Varying Cortical Connectivity Patterns by Adaptive Multivariate Estimators
Astolfi, L., Cincotti, F., Mattia, D., De Vico Fallani, F., Tocci, A., Colosimo, A., Salinari, S., Marciani, M. G., Hesse, W., Witte, H., et al. (2008) · IEEE Transactions on Biomedical Engineering · doi:10.1109/tbme.2007.905419 · Cited by 179
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Metadata
- Authors
- Astolfi, L., Cincotti, F., Mattia, D., Marciani, M. G., Baccala, L. A., de Vico Fallani, F., Salinari, S., Ursino, M., Zavaglia, M., Ding, L., Edgar, J. C., Miller, G. A., He, B., & Babiloni, F.
- Venue
- Human Brain Mapping
- Publisher
- Wiley
- Published
- 2006-06-07
- Volume
- 28
- Issue
- 2
- Pages
- 143-157
- ISSN
- 1065-9471 (ISSN-L)
- 1097-0193
- OpenAlex
- W2137680378
- Cited by
- 362
- References
- 10
- FWCI
- 7.83
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Astolfi, L., Cincotti, F., Mattia, D., Marciani, M. G., Baccala, L. A., de Vico Fallani, F., Salinari, S., Ursino, M., Zavaglia, M., Ding, L., Edgar, J. C., Miller, G. A., He, B., & Babiloni, F. (2007). Comparison of different cortical connectivity estimators for high‐resolution EEG recordings. Human Brain Mapping. https://doi.org/10.1002/hbm.20263
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