Neuroscience’s pivot: why treating depression means treating complex systems, not broken machines
A growing cohort of neuroscientists argues that the brain should no longer be treated as a simple machine with linear cause-and-effect parts, and that this shift could explain why so many people with depression fail to get lasting benefit from current treatments. Award-winning neuroscientist Nicole Rust says the brain behaves more like a dynamic, feedback-driven system—akin to a megacity or the weather—where genes, experience, thought patterns and social forces continuously shape one another. The shift from a linear “gene → brain → behaviour” model to a complex-systems view helps explain persistent treatment gaps and is already guiding new therapeutic research, including psychedelic-assisted therapies and network-based interventions that aim to break maladaptive loops rather than simply correct a single “faulty” component (Neuroscience needs a new paradigm).