Late ERP amplitude for self-face perception positively associated with heartbeat perception accuracy

2019.

Tumialis A., Alikovskaia T. A., Smirnov A. S., Khoroshikh P. P., Fadeev K. A., Gutnikov S. A., Golokhvast K. S.

Perception of yourself involves the integration of information from various sources. In a number of studies, it was found that the perception of one’s own face is accompanied by an increase in the accuracy of perception of heartbeats and the amplitude of brain potentials caused by heart beats. In this study, subjects had to do a heartbeat count test to determine the accuracy of the interception. Then, the subjects were presented with the faces of an unknown person, a friend and the subject’s own face. The simultaneous registration of EEG was organized. We analyzed the relationship between the amplitude of the evoked potentials when viewing these faces and the accuracy of interoception. It was found that the amplitude of the late EP component (850 - 1106 ms) has a positive correlation with IAcc in the central and right parietal and occipital areas when perceiving one’s own face. According to the localization of distributed sources of activity, it was found that the connection is localized in the right anterior upper temporal cortex. Thus, the association between exteroceptive perception of one’s own face and IAcc occurs in the late period of EP. Moreover it is localized in the right temporal region of the cortex, associated with multisensory integration and recognition of personal information.

Keywords: EEG, ERP, interoception, self-perception