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Abstract #4522

Correlation between the Scaling Exponent of the Power Spectral Density Function of Local Field Potentials and the BOLD signal

Xiaodi Zhang1, Wen-Ju Pan1, and Shella Keilholz1

1Department of Biomedical Engineering, Emory University/Georgia Institute of Technology, Atlanta, GA, United States

In this abstract we proposed a new method to assess whether changes in the power spectral density (PSD) function of local field potential (LFP) are correlated with the BOLD signal using a single parameter that describes the relative distribution of activity across frequencies (the power scale exponent). The correlation maps obtained using the scaling exponent exhibit strong, localized correlations at the locations near the electrodes in some scans, similar to those obtained from the LFP power time course method.

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