The ADHD-200 consortium has released a large database of structural MRI, resting-state functional MRI raw datasets, along with phenotypic data acquired on a large cohort of children and adolescents, both for typically developing individuals as well as patients diagnosed with an attention...
neurosynth.org
posted by cameron.craddock
NeuroSynth is a platform for large-scale, automated synthesis of functional magnetic resonance imaging (fMRI) data extracted from published articles.
OpenfMRI.org
posted by pierre.bellec
The OpenfMRI project is a repository of freely available fMRI data.