Abstract
Biosignals are not just measurements of physiology; they could represent a language of life, a continuous dialogue between body, mind, and environment. Over the past two decades, advances in sensing technologies, wearable systems, and computational intelligence have transformed biosignals into powerful tools for monitoring health, decoding emotion, and enabling novel forms of interaction.
In this keynote, I will trace a research journey from the design of wearable and textile-integrated systems for physiological monitoring, through the development of advanced signal processing and AI-based models, to the exploration of biosignals as markers of emotional and cognitive states. I will highlight results from large European projects that bridged engineering and human sciences, addressing topics such as mental health monitoring, immersive environments, and emotion-driven human–machine interaction.
A new frontier is now emerging, the use of biosignals to study synchronization and coupling not only between humans, but also across species. Recent work on human–animal interaction and interspecies emotional transfer demonstrates how biosignals can be leveraged to investigate empathy, welfare, and cross-kingdom communication. This expands the scope of biosignal research from individual monitoring to collective and ecological perspectives.
Looking toward the future, biosignals research must confront critical challenges, including ensuring reproducibility and data quality, integrating multimodal information streams, and embedding ethical and transparent AI into decision-making processes. At the same time, new opportunities are arising through hyperscanning, living labs, and real-world validation of biosignal-based systems in health, education, and society at large.
By reframing biosignals as a universal language that is quantitative, interpretable, and integrative, we can move beyond monitoring toward creating intelligent, empathetic, and sustainable systems that connect humans, animals, and their environments.
Keywords: Biosignals, Wearables, AI for Health, Emotion Recognition, Hyperscanning, Human–Animal Interaction, Interspecies Communication