The role of mid-insula in the relationship between cardiac interoceptive attention and anxiety: evidence from an fMRI study.

摘要: Interoception refers to the perception of internal bodily states. Recent accounts highlight role insula in both interoception and subjective experience anxiety. The current study aimed delve deeper into neural correlates cardiac interoception; more specifically, relationship between interoception-related insular activity, interoceptive accuracy, This was done using functional magnetic resonance imaging (fMRI) an experimental design which 40 healthy volunteers focused on their heartbeat anxious events. Interoceptive accuracy anxiety levels were measured Heartbeat Perception Task State Trait Anxiety Inventory, respectively. results showed posterior, mid anterior activity during interoception, whereas anxiety-related activation only activity. Activation when positively correlated state trait levels, Moreover, mid-insular attention condition not related individuals' but also anxiety, These findings confirm that there are distinct representations across regions, suggest mid-insula as a crucial link