Estimation of Brain Activity by Multivariable Autoregressive Model for Oxy-hemoglobin Changes

Abstract

Estimation of brain activity by multivariable autoregressive model is discussed in the paper. We investigate spontaneous changes in the cerebral oxygenation state by using a multi-channel near-infrared spectroscopy: non-invasive optical topography. Hierarchical decomposition analysis [1] is used to estimate a multivariable autoregressive model. The results are viewed by constructing a brain map that normalizes all the subjects.