Recurrence plot analysis of functional brain connectivity during bistable visual perception

To develop fully-featured brain-computer interfaces it is crucial to study the behaviour of the brain in ambiguous situations. In this study, we analyzed the EEG data recorded during the perception of the bistable image - Necker's cube with the varying intensity of the lines. The image was demonstrated to the test person for one second and the person was asked to decide whether the cube is right-oriented or left-oriented and to push the corresponding data. During these actions the brain activity was recorded using 31-channel EEG, electrodes were placed according to the 10-20 system. The analysis, which was performed with the application of joint recurrence plots, suggests the existence of the synchronization between the channels of the frontal and occipital lobes. We believe that more rigorous research could reveal statistically significant brain connections and their dependence on physiological factors. Besides, this study may be significant for the development of the self-learning adaptive control systems.