Learning a skill, remembering new information, and adapting our behaviours to a changing environment all require changes in the brain. Dulcie Vousden is interested in the plasticity within neural circuits that enables this learning, and how experience and learning shape our perception. To study this, Dulcie uses the mouse visual cortex as a model system. She employs in-vivo imaging techniques to visualize the activity of specific neurons over time as animals learn the behavioural relevance of visual stimuli. By doing so, she can determine how visual information is represented in the brain, how this changes with experience and learning, and how the activity of different brain areas contribute to learning and perception.