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Related Experiment Video

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Exploring the SenseMaking Process through Interactions and fNIRS in Immersive Visualization.

Alexia Galati, Riley Schoppa, Aidong Lu

    IEEE Transactions on Visualization and Computer Graphics
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    This summary is machine-generated.

    Immersive systems help understand cognition during tasks. Increased user interaction and brain activity correlate with better performance on challenging visual tasks, regardless of interface layout.

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    Area of Science:

    • Human-Computer Interaction
    • Cognitive Science
    • Neuroscience

    Background:

    • Cognitive theories guide human-computer interface design.
    • Immersive systems offer novel ways to study cognitive processes.
    • Understanding sensemaking in virtual environments is crucial for effective design.

    Purpose of the Study:

    • To explore the sensemaking process in an immersive environment.
    • To investigate the influence of interface layout and task difficulty on user behavior and performance.
    • To examine the relationship between internal neural activity and external user interactions.

    Main Methods:

    • Developed an immersive system for a user study involving a visual comparison and clustering task.
    • Collected multi-channel user data: augmented reality head-mounted display (AR HMD) for interactions, functional near-infrared spectroscopy (fNIRS) for neural activity, and video.
    • Assessed the impact of planar 2D vs. cylindrical 3D layouts and low vs. high cognitive load on user interactions, temporal dynamics, and task outcomes.

    Main Results:

    • Higher levels of user interaction and cerebral hemodynamic responses were linked to improved task accuracy, particularly in high cognitive load conditions.
    • Interface layout (planar 2D vs. cylindrical 3D) did not significantly affect user interactions or task performance.
    • A visualization system was developed to analyze patterns across multiple data streams.

    Conclusions:

    • Findings suggest that increased engagement and neural activity are key indicators of effective sensemaking and performance in immersive tasks.
    • Interface layout may be less critical than task demands and user engagement for sensemaking.
    • Results inform the design and evaluation of immersive systems, aiding in performance prediction and offering insights into embodied and distributed cognition.