Àlex Armengol Urpí

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I am a Research Scientist at MIT, where I also earned my PhD under the supervision of Prof. Sanjay Sarma. My work lies at the intersection of human–computer interaction, cognitive science, and artificial intelligence. My research has been supported by La Caixa Fellowship.

Research

I develop human–computer interfaces to capture and convey experts’ tacit knowledge—forms of know-how that are difficult to verbalize. By instrumenting experts’ tools, bodies, and environments, I extract implicit signals of expertise using data-driven methods.

This knowledge is translated into interactive interfaces such as Augmented Reality to support training and guidance, and is also used to augment AI systems, enabling models to learn from human implicit behavior. During my PhD, I showed that unconscious visual attention—measured through eye tracking and neural signals—reveals task-relevant knowledge beyond expert awareness, and that feeding this extracted knowledge back to humans and AI improves performance.

I am currently extending this work to additional expert domains, including sports and skilled crafts, exploring how tacit expertise can be captured, reinforced, and transferred across humans and AI systems.

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News

Jan 11, 2026 I presented my poster Learning from the Subconscious: Enhancing Tacit Expertise with Biofeedback at the DreamxEngineering Symposium
Nov 20, 2025 Invited guest lecture — MIT course Technologies for Mental Health and Wellness.
Oct 22, 2025 Promoted to Research Scientist at the MIT Auto-ID Lab!

Selected Publications

  1. holocate.gif
    HoLocate: An Open-Vocabulary, Zero-Shot 3D Grounding Framework for Augmented Reality
    Alexandre Armengol-Urpi, Dulanga Weerakoon, Andres Salazar-Gomez, and Sanjay E Sarma
    In preparation, 2025
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    Free Form 3D Overlays for Open-ended Augmented Reality Task Assistance Using LLMs
    Alexandre Armengol-Urpi, Dulanga Weerakoon, Andres Salazar-Gomez, and Sanjay E Sarma
    In preparation, 2025
  3. cogn_reinf_small.png
    Cognitive Reinforcement: Capturing Tacit Knowledge and Enhancing Expertise with a Biofeedback Interface for Visual Attention Monitoring
    Alexandre Armengol-Urpi, Andres Salazar-Gomez, Pawan Sinha, and Sanjay E Sarma
    Journal of Neural Engineering (under review), 2025
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    WIP: Making Implicit Knowledge Explicit-A Data-Driven Approach to Improve Knowledge Transfer in a Glassblowing Beginners Class
    Alexandre Armengol-Urpi, Andres F Salazar-Gomez, and Sanjay E Sarma
    In 2024 IEEE Frontiers in Education Conference (FIE), 2024
  5. brainhack_small.png
    (Best paper award) Brain-hack: Remotely injecting false brain-waves with RF to take control of a brain-computer interface
    Alexandre Armengol-Urpi, Reid Kovacs, and Sanjay E Sarma
    In Proceedings of the 5th Workshop on CPS&IoT Security and Privacy, 2023
  6. brainwave_augmented_small.png
    Brainwave-augmented eye tracker: high-frequency SSVEPs improves camera-based eye tracking accuracy
    Alexandre Armengol-Urpi, Andres Salazar-Gomez, and Sanjay E Sarma
    In Proceedings of the 27th International Conference on Intelligent User Interfaces, 2022
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    Magichand: Interact with iot devices in augmented reality environment
    Yongbin Sun, Alexandre Armengol-Urpi, Sai Nithin Reddy Kantareddy, Joshua Siegel, and Sanjay Sarma
    In 2019 IEEE conference on virtual reality and 3D user interfaces (VR), 2019
  8. sublime.gif
    Sublime: a hands-free virtual reality menu navigation system using a high-frequency SSVEP-based brain-computer interface
    Alexandre Armengol-Urpi and Sanjay E Sarma
    In Proceedings of the 24th ACM symposium on virtual reality software and technology, 2018