Dissociable substrates underlie the production of abstract and concrete nouns

- Investigation of anatomical regions underlying concrete and abstract noun production.
- Examined semistructured speech samples in svPPA and bvFTD compared to controls.
- Decreased concrete noun production in svPPA related to left ventral temporal lobe.
- Decreased abstract noun production in bvFTD related to left inferior frontal gyrus.
- Behavioral and anatomic double-dissociation between abstract and concrete nouns.