Zukunft strategisch gestalten – Blogreihe zum Metaverse
A worker stands in front of a workstation. Through an XR interface, instructions appear step by step; an avatar provides guidance. The digital twin of the process is precise, machines, parts, and workflows are represented. Then the interaction begins to strain, attention shifts, information density increases, and cognitive workload builds up. Human interaction and impact is essential to all and any virtual workspaces – it’s time to rethink human-machine interaction and create symbiosis, not competition.
The scenario above highlights a substantial shift: Virtual worlds and Extended Reality are no longer just visualisations or simulations; they are digital interaction spaces in which humans are embedded as part of the system. This applies to Industry 5.0 workers, operators, and collaborators across many domains. If humans are part of these interaction worlds, then modelling only machines and processes is not sufficient. The human must also be part of the digital representation.
Cognitive‑inspired Human Digital Twins focus on integrating human states, such as attention and cognitive workload, into digital interaction worlds, acknowledging that full human simulation remains a complex, multi‑disciplinary research challenge. This perspective opens a path toward Human Digital Twins that aim to represent and respond to how humans actually interact within virtual environments.
From digital models to human interaction worlds
Virtual worlds and Extended Reality are increasingly used as interaction spaces rather than static visualisations. In these environments, humans do not merely observe digital models; they act within them, following instructions, coordinating with others, or interacting with avatars and assistants. This shift is particularly visible in domains such as Industry 5.0, where digital twins are staring to represent machines and processes.
As humans become embedded in these interaction worlds, a purely technical representation might no longer be sufficient. Even when processes and environments are modelled accurately, interaction can still break down when attention fragments or cognitive workload accumulates. This highlights the need to extend digital representations beyond machines and processes to include the human dimension.
Embedding Human State into Digital Interaction Worlds
Cognitive‑inspired Human Digital Twins focus on integrating interpretable human states into digital interaction worlds. Rather than aiming to represent the human in full, this perspective concentrates on those aspects of cognition that partly shape interaction, such as attention allocation, cognitive workload, and early fatigue indicators.
These states are derived from observable behaviour and physiology and embedded incrementally into digital representations. The goal is not to explain cognition exhaustively, but to capture how interaction unfolds when humans act in different acts and situations.
By grounding Human Digital Twins in such state representations, the human becomes a stateful component of the interaction world. This provides a foundation for virtual environments, avatars, and assistants that can move beyond static behaviour and begin to respond meaningfully to changes in human state.
Starting from Observable Patterns
A starting point for cognitive inspired Human Digital Twins is attention. Attention is continuously expressed through behaviour and plays a central role in how humans interact with digital environments.
- Gaze patterns reveal where attention is directed and how it shifts over time.
- Eye‑based metrics provide information about attentional stability and emerging cognitive workload.
- Physiological signals, such as heart related metrics like heart rate variability can point to stress or effort.
These measures provide observable correlates from which patterns can be inferred. Over time, such patterns make it possible to detect when attention become fragmented or when workload begins to rise. This is the foundation of cognitive inspiration: making the invisible human dimension visible in a form that can be integrated into digital interaction worlds.
Incremental Embodiment of the Human
Cognitive-inspired Human Digital Twins can be realised incrementally starting with detectable patterns derived from behaviour and physiology and gradually extend towards further representations of workload, fatigue or other states.
When such patterns can be integrated into virtual environments, avatars, or assistants, these systems can begin to react to changes in human state, for example by adjusting pacing, guidance, or information density in response to how a person is coping in the moment. This does not require the system to understand the mind; it requires the system to respond to interpretable state changes.
Illustration Caption: A shared interaction space in Extended Reality connects human and robot action with digital twin representations, while behavioural and neurophysiological signals make attention and workload observable and influence how interaction unfolds. (Credits: Robot arm icon by Yuniarti Pahlevie, from The Noun Project (CC BY). Human illustration from Humaaans by © Pablo Stanley (CC0).)
Implications for Industry 5.0 and beyond
Industry 5.0 emphasises human‑centric production and close collaboration between humans and digital systems. In many industrial contexts, XR instructions, assistance systems, and digital twins of machines and processes are already part of everyday work. What is often missing is an explicit representation of the human as a stateful actor within these systems.
By making attention and workload patterns visible, cognitive‑inspired Human Digital Twins address this gap. This is particularly relevant in complex or safety‑critical situations, where changes in human state often precede errors or breakdowns in interaction. Embedding such state information allows digital interaction worlds to better align system behaviour with human capacities.
Many avatars and AI‑based assistants already generate flexible language and guidance, but they typically operate without explicit awareness of the user’s current cognitive state. When attention and workload patterns are represented, these systems can begin to adjust their behaviour, for example by changing pacing, guidance, or information density.
As virtual worlds and extended reality increasingly integrate humans into digital interaction spaces, the cognitive dimension becomes an important feature to consider. Cognitive-inspired human digital twins can help align system behaviour with observable changes in attention and workload enabling personalised and adaptive environments. At IAO we work with organisations to understand and track relevant human states in real‑world settings through qualitative and quantitative methods, derive meaningful insights, and support the translation of these insights into ideas for interactive systems and informed design decisions.
Zukunft strategisch gestalten - Blogreihe zum MetaverseMetaverse, Extended Reality, virtuelle Welten – was steckt eigentlich dahinter? Und wie verändern diese digitalen Räume unsere Arbeitswelt? Die Blogreihe beleutet, wie Unternehmen immersive Technologien gezielt einsetzen – von kollaborativer Produktentwicklung bis zur datenbasierten Entscheidungsunterstützung.
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