Researchers have identified the location of dysfunctional brain networks that lead to impaired sentence production and word-finding in primary progressive aphasia (PPA). PPA can occur in those with neurodegenerative diseases, such as frontotemporal dementia and Alzheimer's disease. Mapping the networks allows clinicians to apply non-invasive brain stimulation to potentially improve speech in those with PPA.
Researchers have identified a specific area of the brain responsible for auditory verbal hallucinations in people with schizophrenia. The researchers were able to control the hallucinations with the help of transcranial magnetic stimulation.