Adaptive Spatial Filters for Electromagnetic Brain Imaging

• Main Authors: Sekihara, Kensuke (Author), Nagarajan, Srikatan S. (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic eBook
• Language: English
• Published: Berlin, Heidelberg : Springer Berlin Heidelberg, 2008.
• Series: Series in Biomedical Engineering,
• Subjects: Engineering.; Neurosciences.; Radiology.; Biomedical engineering.; Biomedical Engineering.; Imaging / Radiology.; Signal, Image and Speech Processing.

Neural activity in the human brain generates coherent synaptic and intracellular currents in cortical columns that create electromagnetic signals which can be measured outside the head using magnetoencephalography (MEG) and electroencephalography (EEG). Electromagnetic brain imaging refers to techni...

Table of Contents:

• Sensor array outputs and spatial filters
• Tomographic reconstruction and nonadaptive spatial filters
• Adaptive spatial filters
• Location bias, spatial resolution, and beam response
• Output SNR and array mismatch
• Effects of low-rank interference
• Effects of high-rank interference
• Effects of source correlation
• Effects of using the sample covariance matrix
• Statistical evaluation of the spatial filter output
• Methods related to adaptive spatial filters
• Appendices.