| Abstract [eng] |
The resting-state paradigm is frequently applied to study spontaneous activity of the brain in normal and clinical conditions. However, the relationship between the ongoing experience of mind wandering and the individual biological signal is still unclear. To quantify subjects' subjective experiences at rest, the Amsterdam Resting-State Questionnaire (ARSQ) was introduced covering several dimensions of mind wandering. The aim of this work was to estimate associations between subjective experiences during the resting state session and electrical brain’s signal, focusing on EEG power, phase synchronization and topographical aspects. As it was showed in this work, different aspects of the same signal are related to both - different and the same - domains of ARSQ. Power aspect of EEG signal as evaluated with frequency principal component analysis showed that activity in theta frequency range was related to scores for Sleepiness, but not the phase, as evaluated with global field synchronization. On the other hand, phase synchronization of of beta frequency range, but not the power aspect correlated with domain of Comfort. And both, power and phase parameters of alpha band activity correlated with ARSQ domain of Comfort. Three different microstates – C, E and G – displayed associations with domain of Comfort, while microstate B and D correlated with domain of Self and microstate F correlated with Somatic Awareness. |
