The aim of the current study is visualization of task-related variability in EEG-fMRI data, performed as a blind-search analysis without stimulus timings, using a methodology that is based on Kilner's et al. heuristic approach . We show that filters of the relative EEG spectra with different frequency responses visualize different task-related brain networks. The effect is more pronounced within an event-related oddball paradigm (i.e. detecting rare visual targets) than within a block-design semantic decision paradigm (i.e. detecting semantic errors). The mutual information between different EEG-fMRI activation maps calculated with filters of different frequency responses appears stable between the different paradigms. We also introduce preliminary results implementing the heuristic analysis with spatiospectral EEG components, where the filter response has two dimensions and depends on frequency and channels.
|Original language||English (US)|
|Title of host publication||2016 IEEE International Symposium on Biomedical Imaging|
|Subtitle of host publication||From Nano to Macro, ISBI 2016 - Proceedings|
|Publisher||IEEE Computer Society|
|Number of pages||4|
|State||Published - Jun 15 2016|
|Event||2016 IEEE 13th International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2016 - Prague, Czech Republic|
Duration: Apr 13 2016 → Apr 16 2016
|Name||Proceedings - International Symposium on Biomedical Imaging|
|Other||2016 IEEE 13th International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2016|
|Period||4/13/16 → 4/16/16|
Bibliographical notePublisher Copyright:
© 2016 IEEE.
- Simultaneous EEG-fMRI
- heuristic model