Simon Wilton Davis
My research centers around the use of structural and functional imaging measures to study the shifts in network architecture in the aging brain. I am specifically interested in changes in how changes in structural and functional connectivity associated with aging impact the semantic retrieval of word or fact knowledge. Currently this involves asking why older adults have particular difficulty in certain kinds of semantic retrieval, despite the fact that vocabularies and knowledge stores typically improve with age.
A second line of research involves asking questions about how this semantic system is organized in young adults, understanding which helps form a basis for asking questions about older adults. To what degree are these semantic retrieval processes lateralized? What cognitive factors affect this laterality? How are brain structures like the corpus callosum involved in mediating distributed activation patterns associated with semantic retrieval?
Education and Training
- Ph.D., Duke University, 2011
Selected Grants and Awards
- Evaluating State-Based Network Dynamics in Anhedonia
- Impact of Timing, Targeting, and Brain State on rTMS of Human and Non-Human Primates
- Bilateral Brain Dynamics Supporting Cognition in Normal Aging and Dementia
- Using fMRI-guided TMS to increase central executive function in older adults
- Role of white-matter connectivity on age-related reorganization of brain networks