Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level

Wobrock D, Finke A, Mey S, Koester D, Schack T, Ritter H (2017)
Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal.

Kurzbeitrag Konferenz / Poster | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
While technical systems grow in complexity, human-machine interaction (HMI) still requires the user to adapt to the tools. By combining electroencephalography (EEG) and eye-tracking, we aim to create a multi-modal brain machine interface (BMI) to improve system adaptivity and resource effciency in HMI. We propose to analyze Fixation-Related Potentials (FRP) as indicators for cognitive demand and utilize this measure to automatically adapt a system to the user. To this end, we conducted two complementary studies to investigate variations between different tasks, i.e., an object counting task in cluttered scenes and a subjective choice task. Comparing the FRP grand averages (per task category over all trials and participants), we identified significant amplitude and frequency differences in early fronto-central N100 and P200 components. The dataset combining both studies was linearly classified with 66% (SD: 2.0) accuracy using temporal features, but 93% (SD: 1.8) using frequency features. This suggests that early FRP components vary with task complexity during natural scene exploration. Our results also suggest that cognitive demand may be identified on a single trial level using the proposed multi-modal approach. Thus, EEG data may contain discriminative information that eye-tracking data cannot provide alone, e.g., through Ffixation duration.
Erscheinungsjahr
2017
Konferenz
European Conference on Eye Movements (ECEM 2017)
Konferenzort
Wuppertal
Konferenzdatum
2017-08-20 – 2017-08-24
Page URI
https://pub.uni-bielefeld.de/record/2913967

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Wobrock D, Finke A, Mey S, Koester D, Schack T, Ritter H. Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal.
Wobrock, D., Finke, A., Mey, S., Koester, D., Schack, T., & Ritter, H. (2017). Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal.
Wobrock, Dennis, Finke, Andrea, Mey, Shirley, Koester, Dirk, Schack, Thomas, and Ritter, Helge. 2017. “Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level”. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal .
Wobrock, D., Finke, A., Mey, S., Koester, D., Schack, T., and Ritter, H. (2017).“Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level”. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal.
Wobrock, D., et al., 2017. Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal.
D. Wobrock, et al., “Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level”, Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal, 2017.
Wobrock, D., Finke, A., Mey, S., Koester, D., Schack, T., Ritter, H.: Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal (2017).
Wobrock, Dennis, Finke, Andrea, Mey, Shirley, Koester, Dirk, Schack, Thomas, and Ritter, Helge. “Fixation-Related Potentials as a Measure for Cognitive Demand in Visual Tasks on Single Trial Level”. Presented at the European Conference on Eye Movements (ECEM 2017), Wuppertal, 2017.
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