Abstract
The joint use of total and partial coherence between pairs of EEGs simultaneously recorded in a standard set, is shown to enhance what is caused by direct correlation between cortical subsystems and what is instead related to the spread of the electromagnetic field. A multi-variable autoregressive approach is employed in the computation, giving results even for a very short time window, thus allowing coherence to be investigated at the main cortical latencies of evoked potentials. In particular, when a combined visual and somatosensory stimulation is applied, cortical interactions are captured in the frequency domain.
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Liberati, D., Cursi, M., Locatelli, T. et al. Total and partial coherence analysis of spontaneous and evoked EEG by means of multi-variable autoregressive processing. Med. Biol. Eng. Comput. 35, 124–130 (1997). https://doi.org/10.1007/BF02534142
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DOI: https://doi.org/10.1007/BF02534142