eXtended Cognition: Measuring, Modeling, and Modulating Perception in XR

The extended mind theory proposes a new perspective on human cognition by expanding it beyond organic, internal mechanisms to external systems that functionally integrate with the mind. With on-going breakthroughs in immersive extended reality (XR) technologies engaging the full range of sensory and perceptual modalities, we now have an unprecedented opportunity to bring this theory into practice. To capitalize on XR’s potential for realizing full brain–XR integration as eXtended cognition, this research introduces a three-pillar framework: measurement, modeling, and modulation of perception. My doctoral research is framed within the ChronoPilot project, which specifically investigates the modulation of time perception in XR. Within this framework, I have implemented two components: EEG-based measurement and XR-driven modulation of perceived time. The final phase of my work focuses on modeling time perception through deep learning applied to biosignals such as EEG and eye-tracking data. Together, these three components form the basis for an online loop in XR that modulates perception in real time, enabling extended cognition.