Analysis of inter-hemispheric and intra-hemispheric differences of the correlation dimension in the emotional states based on EEG signals

In this paper, inter-hemispheric and intrahemispheric differences of multichannel EEG signals were investigated during different emotional states based on the nonlinear processing of EEG signals. For this aim, correlation dimension of hemispheres was compared as a complexity measure of the EEG signals. We determined the regions where the correlation dimension was significant between hemispheres using two-way ANOVAs with repeated measures test. According to our obtained results, the correlation dimension showed intrahemispheric differences bilaterally between frontal and parietal regions during joy and sad emotional states.