LORETA Cross-Frequency Coherence is anEEG LORETA measure of the Coherence (amplitude independent coupling) between frequencies and the center voxels of 88 different Brodmann areas, for example delta and beta or theta and alpha-2 or theta and high beta (Gamma), etc. Neurons in a given Brodmann area communicates with other brain regions over a range of frequencies. This add-on quantifies the coupling and provides a normative database comparison (Z scores) to help link symptoms to dysregulation in the brain.
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Surface Cross-Frequency Power is an EEG measure of the correlation of power between frequencies and scalp locations, for example delta and beta or theta and alpha-2 or theta and high beta (Gamma), etc. A given brain region communicates with other brain region over a range of frequencies. Currently available for Raw Values Only.
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Surface Cross-Frequency Coherence is an EEG measure of the Coherence (amplitude independent coupling) between frequencies and scalp locations, for example delta & beta or theta & alpha-2 or theta & high beta (Gamma), etc. A given brain region communicates with other brain regions over a range of frequencies. This add-on quantifies the coupling and provides a normative database comparison (Z scores) to help link symptoms to dysregulation in the brain.
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The amplitude of higher EEG frequencies (e.g., beta) are related to the phase of lower EEG frequencies (e.g., theta). Therefore, this is a surface EEG measure of the correlation between the phase and amplitude of the EEG across frequencies and scalp locations, for example delta and beta or theta and alpha-2 or theta and high beta (Gamma), etc. This is a unique and important metric that in part reflects the coupling between the upper cortical layers (I-III that generate beta) and the lower cortical layers (V-VI) that generate delta and theta. This add-on quantifies the coupling and provides a normative database comparison (Z scores) to help link symptoms to dysregulation in the brain.