This lecture explores the concept of the disconnectome, focusing on the brain's white matter connections and their impact on brain functions post-stroke. It delves into the relationship between brain lesions and symptoms, the challenges in predicting cognitive recovery, and the potential of task-related fMRI activation patterns to map white matter function. The speaker presents an atlas of white matter function, highlighting the influence of white matter connections on brain organization and the biased taxonomy of brain functions. The lecture concludes by discussing the implications of the current understanding for defining brain functions, especially in the right hemisphere.