Cardiac, respiratory, and gastric rhythms independently modulate motor corticospinal excitability in humans.

ABSTRACT: Interoception refers to the brain's sensing of internal body state and encompasses various bodily systems, notably the cardiac, respiratory, and gastric rhythms. Beyond their roles in physiological regulation and emotional states, each of these visceral rhythms has been shown to influence brain activity and cognition, prompting for the development of various interpretative functional frameworks. However, both experimental data and functional hypothesis leave it unclear whether and how each visceral rhythm acts simultaneously and independently on brain activity. Here, we address this question by measuring in human participants how the corticospinal excitability of the motor system varies with the phase of each of the three visceral rhythms. We applied single pulse transcranial magnetic stim

SUBMITTER: Engelen T 

PROVIDER: S-EPMC12629470 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature