## 3 Results  
To visualize the results, topographical head heat maps were used. The color bar represents the main features of signals obtained by normalization between the minimal and maximal values. Therefore, the topographical plots represent the statistically significant differences in PSD values that are induced by distinctive types of visual stimulation. These data were also reflected within the head maps. First, the analysis of power spectral density values reflected the neurodynamics related to the visual stimulus perception and processing when subjects were presented with emotional stimuli (Figure 1). A comparison of the EEG data recorded during the demonstration of the first and second series of neutral images revealed the development of a well-defined focus of  
Figure 1: Topographic distribution of PSD values during the perception of positive and negative faces. activation in the left anterior parietal cortical area within the \(\theta_{2}\) sub-band when the subjects were processing neutral faces preceded by negative images (Figure 2). At the same time, the comparative analysis between male and female subject groups highlighted some of the gender-specific differences in information processing that were primarily visible within the \(\beta\) EEG band. Thus, enhanced activation processes were located within the prefrontal and frontal cortical areas in the \(\beta_{2}\) sub-band. Apart from that, men also tended to have generally increased activation distributed among the majority of cortical regions in the \(\beta_{1}\) sub-band. The analysis of coherence alterations in the paradigm of our study showed the expected generalized multiple connections within low and medium values (0.3-0.7) (Figure 3). The maximal number of connections was observed in the \(\theta_{1}\), \(\theta_{2}\), \(\alpha_{1}\), and \(\beta_{2}\) EEG sub-bands in the case of positive stimulus perception. Exposure to visual stimuli with negative emotional coloring was accompanied by a less pronounced generalization of distant EEG synchronization (a smaller number of functional connections in the neocortex), with the maximum represented in the \(\theta_{1}\), \(\theta_{2}\), and \(\alpha_{1}\) EEG bands. (Figure 3). Lastly, no dominant foci of connections were revealed in either positive or negative emotional stimuli. Regarding the high values of coherence coefficients (\(0.7<K<1\)), it can be concluded that, during exposureto both emotional series, there was a central-right-sided association observed in the frontal, central, and parietal-posterior temporal zones within all EEG bands (Figure 3) In addition, there was a distant bilateral connection formed in the temporal and occipital regions within the \(\theta_{1}\), \(\theta_{2}\), and \(\alpha_{1}\) sub-bands. Figure 2: Topographic distribution (**A**) and regions of statistically significant differences (**B**) in PSD values during perception of neutral faces, which were preceded by positive (n1) and negative (n2) faces. Moreover, coherence topography appeared to be similar in the two emotional series. However, positive facial perception induced an additional left-hemispheric posterior-frontal-temporal association (_F7_-_T3_-_T5_) in the \(\theta_{1}\), \(\theta_{2}\), and \(\alpha_{1}\) sub-bands alongside a symmetrical network of connections in the right hemisphere (_F8_-_T4_-_T6_) in the \(\theta\)-band. The perception of negative stimuli was accompanied by the chain of distant connections described above, complemented by frontotemporal relations in the right hemisphere within the \(\alpha_{1}\) sub-band, and posterior temporal connections in the \(\alpha_{2}\) and \(\alpha_{3}\) bands of oscillations. Lastly, the left hemisphere's rear frontal and temporal cortical areas were interconnected within \(\alpha_{2}\) EEG sub-bands (Figure 3). Likewise, the topography of distant coherent connections distribution (\(0<K<1\)) during both neutral emotion-primed series perception appeared to be generally similar to the one observed in the case of emotional stimulus processing.