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Towards a Multimodal Measure for Physiological Behaviours to Estimate Cognitive Load

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Engineering Psychology and Cognitive Ergonomics. Mental Workload, Human Physiology, and Human Energy (HCII 2020)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 12186))

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Abstract

We present an experiment investigating the relationships between different physiological measures, including Mean Pupil Diameter Change, Blinking-Rate, Heart-Rate, and Heart-Rate Variability to inform the development of a measure to estimate Cognitive Load. Our experiment involved participants performing a task to spot correct or incorrect words and sentences which successfully induced Cognitive Load. Our results show that participants’ task performance predicts their subjective rating of Cognitive Load and that there was a decrease in participants’ performance with an increase in Cognitive Load. Furthermore, Mean Pupil Diameter Change was able to predict Blinking-Rate, and Heart-Rate was able to predict Heart-Rate Variability. This prediction is evidence that collecting data on physiological behaviours synchronously and analysing the trends can be an effective way of estimating Cognitive Load, and will help the future development of an online measure of Cognitive Load useful for responsive user interfaces.

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Notes

  1. 1.

    https://github.com/BrutusTT/tobii_api.

  2. 2.

    https://github.com/BrutusTT/ml_study.

  3. 3.

    H1a1: Participants’ subjective ratings of CL will predict their overall task performances (H1a1).

  4. 4.

    H1b: Lower participants’ ratings of CL will predict better task performance or vice versa.

  5. 5.

    H1a2: Participants’ subjective ratings of CL will predict time spent to complete the tasks.

  6. 6.

    H2: Participants’ changes in one physiological behaviour will predict a change in another behaviour.

  7. 7.

    H2b: Changes in the overall mean value of HR will predict overall mean HRV and vice versa. Similarly, BR will predict overall mean PD and vice versa.

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Acknowledgment

The authors would like to acknowledge the support of the ORCA Hub EPSRC (EP/R026173/1, 2017-2021) and consortium partners.

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Authors and Affiliations

  1. Edinburgh Center for Robotics, Computer Science Department, Heriot-Watt University, Edinburgh, UK

    Muneeb Imtiaz Ahmad, David A. Robb, Ingo Keller & Katrin Lohan

  2. NTB University of Applied Sciences in Technology, Buchs, Switzerland

    Katrin Lohan

Authors
  1. Muneeb Imtiaz Ahmad
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  2. David A. Robb
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  3. Ingo Keller
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  4. Katrin Lohan
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Corresponding authors

Correspondence to Muneeb Imtiaz Ahmad , David A. Robb , Ingo Keller or Katrin Lohan .

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Editors and Affiliations

  1. Coventry University, Coventry, UK

    Don Harris

  2. Cranfield University, Cranfield, UK

    Wen-Chin Li

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Ahmad, M.I., Robb, D.A., Keller, I., Lohan, K. (2020). Towards a Multimodal Measure for Physiological Behaviours to Estimate Cognitive Load. In: Harris, D., Li, WC. (eds) Engineering Psychology and Cognitive Ergonomics. Mental Workload, Human Physiology, and Human Energy. HCII 2020. Lecture Notes in Computer Science(), vol 12186. Springer, Cham. https://doi.org/10.1007/978-3-030-49044-7_1

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  • DOI: https://doi.org/10.1007/978-3-030-49044-7_1

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