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Michael Breakspear
School of Psychiatry, University of New South Wales, Black Dog Institute, and The Brain Dynamics Centre
The Multiscale Character of Evoked Cortical Dynamics
Wednesday 30th, August 14:05-14:55pm,
Carslaw Lecture Theatre 373.
The architecture and the dynamics of the brain have characteristic
features at different spatial scales. However, the existence and function of
dynamical interdependencies between such scales have not been previously
investigated. In this talk we explicate a novel means of addressing this
problem using "wavelet functions" - novel mathematical tools which permit a
multiscale representation of spatiotemporal data. We have hence observed strong
multiscale effects in the temporal and spatial domains of functional
neuroscience (EEG and fMRI) data. We discuss the putative contribution of
this "multiscale noise" to the dynamics of distributed neocortical dynamics and
the robustness of human information processing.
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