casa 18: e1

Research Article

Influence of Task-evoked Mental Workloads on Oculo-motor indices and their connections

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  • @ARTICLE{10.4108/eai.4-2-2021.168649,
        author={Minoru Nakayama and Yoshiya Hayakawa},
        title={Influence of Task-evoked Mental Workloads on Oculo-motor indices and their connections},
        journal={EAI Endorsed Transactions on Context-aware Systems and Applications: Online First},
        volume={},
        number={},
        publisher={EAI},
        journal_a={CASA},
        year={2021},
        month={2},
        keywords={Interface, Mental workload, Eye movement, Microsaccade, Pupil response},
        doi={10.4108/eai.4-2-2021.168649}
    }
    
  • Minoru Nakayama
    Yoshiya Hayakawa
    Year: 2021
    Influence of Task-evoked Mental Workloads on Oculo-motor indices and their connections
    CASA
    EAI
    DOI: 10.4108/eai.4-2-2021.168649
Minoru Nakayama1,*, Yoshiya Hayakawa2
  • 1: Information and Communications Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo,152–8552 Japan
  • 2: Tokyo Institute of Technology
*Contact email: nakayama@ict.e.titech.ac.jp

Abstract

The frequency of microsaccades is often used as a measurement of eye movement in order to estimate the level of effort required, because some indices of oculo-motors suggest the level of mental activity. In an experiment involving several task-manipulation levels, ocular information including microsaccades, saccades and pupil diameters were measured and compared in order to estimate workload levels during problem solving. While some oculo-motor metrics correlate with the estimated scores of the mental workload, these metrics mutually correlate with each other. A causal relationship model was created using all metrics, including subjective measurements. Metrics of microsaccades perform the function of intermediating behaviour between participant’s subjective assessments and conventional ocular measurements, such as saccades and pupil responses.