Online Classification of Cognitive Control Processes Using EEG and fNIRS: A Stroop Experiment
| Autor: | Leonhard Schreiner, Ren Xu, Harald Pretl, Patrick Reitner, Gerald Hirsch, Christoph Guger |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Human-Computer Interaction. Theory, Methods and Tools ISBN: 9783030784614 HCI (1) Lecture Notes in Computer Science Lecture Notes in Computer Science-Human-Computer Interaction. Theory, Methods and Tools |
| ISSN: | 0302-9743 1611-3349 |
| DOI: | 10.1007/978-3-030-78462-1_45 |
| Popis: | Introduction: Brain-computer interfaces (BCIs) provide a broad range of applications for human-computer interactions. Exploring cognitive control and underlying neurophysiological mechanisms brings essential contributions to this research field. In this paper, neurophysiological findings connected to cognitive control processes using the Stroop experiment were investigated. Electroencephalography (EEG) and functional infrared spectroscopy (fNIRS) were employed for measuring brain activities. The Stroop-test was classified against resting-state activities. Materials and Methods: The wireless g.Nautilus fNIRS system (g.tec medical engineering GmbH) with 16 channels of EEG, combined with 8 channels of fNIRS, was used for data acquisition. Six healthy subjects participated in the conducted Stroop experiment. Results: A considerable hemodynamic response was present during the Stroop-test, as seen in the offline analysis. The EEG-based classification delay was considerably lower than those with oxygenated and deoxygenated hemoglobin-based classifiers. The online experiment analysis showed that the accuracy rose clearly within the first 2s of the task. On average, a maximum accuracy of 81.0% was achieved at 6.2s after the task onset. Discussion: and Conclusion: In general, the hybrid approach seems superior by facilitating information from all three modalities. In conclusion, the capability of successfully determining frontal lobe activity is a promising indication to use hybrid BCIs for further research applications. |
| Databáze: | OpenAIRE |
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