Steven E. Petersen, Washington University in St Louis, Department of Psychology, St Louis, USA
Dr. Petersen received his Ph.D at CalTech studying monkey visual cortex, with post-doctoral work at NIH on vision and visual attention in macaques. Since 1985, he has been James S. McDonnell Professor at Washington University in the Departments of Neurology and Psychology, and is the Director of the McDonnell Center for Systems Neuroscience.
His research focuses on the development of reading, attentional control systems, and large-scale functional brain networks in humans. He has won the Society for Neuroscience Young Investigator Award and the Grauemeyer Award in Psychology (with M. Raichle and M. Posner).
Abstract:We use correlations of the BOLD signal at rest to study relationships among large collections of brain regions. This large-scale network shows separable systems of regions whose members often act together during tasks (e.g. sensorimotor and executive systems). The spatial layout of the systems on the brain has isolated locations where several systems closely articulate; regions surrounding these locations have high levels of cross-system correlation. The combination of spatial articulation and high interrelationship indicate that these locations might be particularly “vulnerable” to damage. Lesions at these points produce neuropsychological results consistent with this idea. Network-level understanding of the brain's functional organization can usefully inform other cognitive, developmental, and clinical neuroscience questions.
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