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Brain Activation Sequences Abstract INTRODUCTION: This research goes beyond the EEG source localization up to the field of brain connectivity in an attempt to create software tool that eases diagnostic procedures in selected nosologic units by discriminating between patients and healthy controls. METHODS: Experiment 1 - a group of 26 adult patients (14 male, 12 female) suffering from NC and 10 adult controls (5 male, 5 female) participated in the experiment. The experiment contained audio recordings designed to trigger laughter in participants during the EEG recording. Experiment 2 - twenty eight female inpatients diagnosed with ED and ten healthy controls were selected and presented with various stimuli while the EEG was recorded. The Brain Activation Sequences method, applied to all recordings, utilizes nonlinear differential model structure to calculate final output sequence of the brain locations involved substantially in the stimulus processing. RESULTS: Experiment 1 - the BAS results show statistically significant differences in activity between patients and controls namely in gyrus orbitalis, rectus, occipitalis inferior (right), occipitalis medius (right), paracentralis, cinguli, cuneus (right) and parahippocampalis (left). Experiment 2 - the results confirm significant differences in processing the...