Interoceptive signals shape the earliest markers and neural pathway to awareness at the visual threshold
PSPE
- Leupin, Viviana ORCID Department of Psychology, University of Fribourg
- Britz, Juliane ORCID Department of Psychology, University of Fribourg
- 2024
Published in:
- Proceedings of the National Academy of Sciences. - 2024, vol. 121, no. 37, p. e2311953121
English
Significance The brain constantly processes stimuli from inside and outside the body, and interoceptive stimuli can modulate the perception of external stimuli. Cardiac and respiratory rhythms are important pacemakers of the organism, and we show how baroreceptor (BR) activity fluctuations across the cardiac and respiratory cycle shape awareness-related brain activity for visual threshold stimuli in two ways. They affect 1) the earliest electrophysiological marker (P1 for low, VAN for high BR activity), and 2) the brain regions activated (frontal cortex for low, parietal cortex for high BR activity) when subjects become aware of a stimulus. Our results indicate that bodily signals modulate the pathway to awareness, and we propose to consider them as functionally relevant signals that influence brain activity.
- Faculty
- Faculté des lettres et des sciences humaines
- Department
- Département de Psychologie
- Language
-
- English
- Classification
- Arts, Human and Social Science
- License
-
CC BY-NC-ND
- Open access status
- hybrid
- Identifiers
- Persistent URL
- https://folia.unifr.ch/unifr/documents/334921
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