Interoceptive accuracy and its impact on neuronal responses to olfactory stimulation in the insular cortex.

ABSTRACT: The insular cortex plays a key role in the integration of multimodal information and in interoceptive and exteroceptive processing. For instance, neurons in the central dorsal insula that are active during interoceptive tasks, also show an adaptation to gustatory stimulation. We tested the link between interoception and exteroception for the olfactory system (i.e., the second domain of chemosensation). In a sample of 31 participants, olfactory function was assessed in a two dimensional approach while the Heartbeat Perception Task served as a measurement for cardiac interoceptive accuracy. Subsequent fMRI sessions were performed on a 3-Tesla MR scanner containing 12-15 olfactory stimulation trials with a mildly pleasant food-related odor (coffee). Persons scoring high in the cardiac interoc

SUBMITTER: Koeppel CJ 

PROVIDER: S-EPMC7336161 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature