Workshops and Symposia
Individual Head Models for Electrical Neuroimaging and Neuromodulation
Marriott Marquis San Diego Marina
333 West Harbor Drive
San Diego, California, USA
November 10, 2016
Don M. Tucker, EGI Chief Executive Officer, Electrical Geodesics, Inc.
Dense array technology now allows the electroencephalogram (EEG) to be recorded with up to 256 channels in routine research and clinical settings. Electrical source imaging requires an accurate model of the physical relation between the EEG electrodes and the cerebral cortex, the primary generator of the EEG. The position of the electrodes can be measured with photogrammatic and other methods, the geometry of the head tissues can be imaged with structural MRI, and the conductivity of head tissues can be measured with electrical impedance tomography. The skull is the major resistive barrier to electrical fields, and its bone density can be estimated with precision through x-ray attenuation in computed tomography. By careful attention to each of the electrophysical components of the human head, highly accurate electrical neuroimaging is now achievable for individual subjects. With this level of accuracy now understood for individuals, it is now possible to evaluate the approximation with atlas models without MRI scans for achieving highly affordable workflows for routine human electrical neuroimaging.
Can’t attend this lecture? Read our publication: Kai Li, Xenophon Papademetris, and Don M. Tucker, “BrainK for Structural Image Processing: Creating Electrical Models of the Human Head,” Computational Intelligence and Neuroscience, vol. 2016, Article ID 1349851, 25 pages, 2016. doi:10.1155/2016/1349851.