Riina Hannula is a doctoral candidate in the University of Helsinki, sociology department. She/they are also an artist working with different mediums from video essays to installation and immersive art in the context of multispecies care. Riina’s interest in microbial social sciences has emerged from cultural animal studies and subsides in relational and new materialist ontologies and posthumanism. They are interested in humans as holobionts from the gut-brain axis point of view. Looking at how microbes think, feel, and behave within humans the study focuses on the vagus nerve. This nerve among other mechanisms it conducts is the central signaling pathway between gut microbiota and the brain, being sort of a multispecies apparatus of care.