Spontaneous Brain Activity Relates to Autonomic Arousal

摘要: Although possible sources and functions of the resting-state networks (RSNs) brain have been proposed, most evidence relies on circular logic reverse inference. We propose that autonomic arousal provides an objective index psychophysiological states during rest may also function as a driving source activity connectivity RSNs. Recording blood oxygenation level-dependent (BOLD) signal using functional magnetic resonance imaging skin conductance simultaneously in human subjects, we found spontaneous fluctuations BOLD signals key nodes RSNs are associated with changes nonspecific response, sensitive arousal. Our findings provide important role for nervous system to “rest.”