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    Area of Science:

    • Neuroscience
    • Human-Computer Interaction
    • Cognitive Psychology

    Background:

    • Understanding neural synchronization in cooperative tasks is crucial for designing effective human-machine systems.
    • The Multi-Attribute Task Battery (MATB-II) is a validated tool for simulating complex operational environments.

    Purpose of the Study:

    • To investigate the relationship between task difficulty and electroencephalography (EEG) coupling in pairs performing a cooperative simulation.
    • To determine how varying difficulty levels of a concurrent, independent task affect inter-brain synchronization.

    Main Methods:

    • Participants performed the NASA-designed Multi-Attribute Task Battery (MATB-II), simulating pilot and copilot roles.
    • EEG data was recorded from pairs performing the task at both high and low difficulty levels.
    • Analysis focused on quantifying the coupling of EEG activity between paired participants.

    Main Results:

    • A significant increase in EEG coupling was observed between participants as the task difficulty level increased.
    • Higher difficulty correlated with greater synchronization of neural activity between the pilot and copilot.

    Conclusions:

    • Task difficulty modulates neural coupling in cooperative, dual-operator scenarios.
    • Enhanced inter-brain synchronization may reflect increased reliance on shared cognitive resources or communication under demanding conditions.