Sensory systems are our gateway to the world but to successfully engage with our environment we must be able to use sensory information flexibly, according to the current demands of our environment. This need is reflected in the way different brain regions are functionally connected with each other. This connectivity is important, but we are only just beginning to understand how sensory signals travel through brain—wide networks to help us in the face of challenging visual environments. In our current work, we are using combinations of brain stimulation and neuroimaging to help us understand how changes in one brain region can travel through brain networks. We also aim to map how these networks change and adapt as we become more expert with visual tasks.