John Smallridge is a research associate collaborating with the University Hospital of Psychiatry Zurich research group. He holds an MSci in Neuroscience from University College London and an MSc in Neural Systems and Computing from the University of Zurich, and works at the intersection of quantitative methods and clinical research. His work focuses on bridging phenomenology and neurophysiology in altered states of consciousness. His methodological scope includes EEG and TMS-EEG, two-photon microscopy, fMRI, PET, and population pharmacokinetic-pharmacodynamic modeling. He contributes to projects investigating DMT and harmine, supporting analysis, visualisation, and publication-ready interpretation.