1. Magnetoencephalography Core Facility, National Institute of Mental Health (NIMH), National Institutes of Health, Bethesda, Maryland.
2. Neuroscience Graduate Program, Brown University, Providence, Rhode Island.
3. Brain Imaging and Modeling Section, Voice, Speech, and Language Branch, National Institute on Deafness and Other Communication Disorders (NIDCD), National Institutes of Health, Bethesda, Maryland.