Neuroimage 2021 Apr 2:117989. Epub 2021 Apr 2.
School of Physics, University of Sydney, New South Wales 2006, Australia; ARC Center for Integrative Brain Function, University of Sydney, New South Wales 2006, Australia. Electronic address:
It is shown how the brain's linear transfer function provides a means to systematically analyze brain connectivity and dynamics, and to infer connectivity, eigenmodes, and activity measures such as spectra, evoked responses, coherence, and causality, all of which are widely used in brain monitoring. In particular, the Wilson spectral factorization algorithm is outlined and used to efficiently obtain linear transfer functions from experimental two-point correlation functions. The algorithm is tested on a series of brain-like structures of increasing complexity which include time delays, asymmetry, two-dimensionality, and complex network connectivity. Read More