Emotional Processing

EEG is also used in cognitive studies. The investigation of brain asymmetries for cognitive functioning has a long history in neuropsychology. EEG is used, for example, in studies examining changes in asymmetry as a function of state changes in emotions. In this kind of studies, it is assumed that changes in EEG asymmetry can be elicited and observed. EEG is used to investigate the differences in brain electrical activity during emotions of positive, negative and neutral valence. Usually emotions are evoked visually by presenting pictures form the International Affective Picture System (IAPS). The IAPS is currently used in experimental investigations of emotions and attention worldwide, providing experimental control in the selection of emotional stimuli, facilitating the comparison of results across different studies, and encouraging replication within and across psychological and neuroscience research laboratories.

Our work

We analyze the EEG data obtained from an experiment consisting of affective picture stimuli presentation. Selected methods for classification of individual emotional states were tested. We are interested in the inter-individual differences in subjects and we would like to test whether it is possible to find features of the EEG signals that would enable the differentiation of the emotional states in all subjects.


Mindmetic, London, UK.