Functional Fractionation of the Cingulo-opercular Network: Alerting Insula and Updating Cingulate.

Cerebral Cortex
Suk Won HanRené Marois

Abstract

The anterior insula (AI) and dorsal anterior cingulate cortex (dACC) are engaged in various cognitive and affective processes. An influential account posits that the AI and dACC's ubiquitous engagements reflect their role in the transient capture of attention by salient stimuli. Using fMRI here we tested this claim and functionally dissociated these regions. In the first experiment, we compared these regions' responses to emotion-laden and emotion-neutral salient "oddball" movie events. We found that while the AI only responded transiently to the onset and offset of neutral events, its response to affective events was sustained, challenging the transient attention capture account. By contrast, dACC remained transient regardless of event type. A second experiment distinguished the information encoded by these brain regions with the presentation of behaviorally salient events that require either maintaining the current task set or updating to a different one; the AI was found to signal the presence of the behaviorally relevant events, while the dACC was associated with switching of attention settings in response to the events. We conclude that AI and dACC are involved in signaling the presence of potentially or de facto behaviora...Continue Reading

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Citations

Aug 6, 2019·Wiley Interdisciplinary Reviews. Cognitive Science·Alexander L Francis, Jordan Love
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Sep 8, 2021·Frontiers in Behavioral Neuroscience·Diego Mac-AuliffeJean-Philippe Lachaux

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