bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Дек. 16, 2023

Abstract Sensory signals from the body’s visceral organs (e.g. heart) can robustly influence perception of exteroceptive sensations. This interoceptive-exteroceptive interaction has been argued to underlie self-awareness by situating one’s perceptual awareness stimuli in context internal state, but studies probing cardiac influences on visual have yielded conflicting findings. In this study, we presented separate grating each subjects’ eyes as a classic binocular rivalry paradigm – measuring duration for which stimulus dominates perception. However, caused gratings “pulse” at specific times relative real-time electrocardiogram, manipulating whether pulses occurred during systole, when baroreceptors signal brain that heart contracted, or diastole are silent. The influential “Baroreceptor Hypothesis” predicts effect baroreceptive input should be uniformly suppressive. contrast, observed dominance durations increased systole-entrained stimuli, inconsistent with Baroreceptor Hypothesis. Further, show cardiac-dependent is preserved subjects who at-chance discriminating between and diastole-presented interoceptive task, suggesting our results not dependent conscious access heartbeat

Язык: Английский