Higher emotional granularity relates to greater inferior frontal cortex cortical thickness in healthy, older adults.

Autor: Lukic S; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA. slukic@adelphi.edu.; Adelphi University, Hy Weinberg Center, Suite 136, Garden City, NY, 11530-0701, USA. slukic@adelphi.edu., Kosik EL; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Roy ARK; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Morris N; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Sible IJ; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Datta S; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Chow T; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Veziris CR; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Holley SR; Psychology Department, San Francisco State University, San Francisco, CA, USA., Kramer JH; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Miller BL; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Keltner D; Department of Psychology, University of California, Berkeley, CA, USA., Gorno-Tempini ML; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA., Sturm VE; Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA.
Jazyk: angličtina
Zdroj: Cognitive, affective & behavioral neuroscience [Cogn Affect Behav Neurosci] 2023 Oct; Vol. 23 (5), pp. 1401-1413. Date of Electronic Publication: 2023 Jul 13.
DOI: 10.3758/s13415-023-01119-y
Abstrakt: Individuals with high emotional granularity make fine-grained distinctions between their emotional experiences. To have greater emotional granularity, one must acquire rich conceptual knowledge of emotions and use this knowledge in a controlled and nuanced way. In the brain, the neural correlates of emotional granularity are not well understood. While the anterior temporal lobes, angular gyri, and connected systems represent conceptual knowledge of emotions, inhibitory networks with hubs in the inferior frontal cortex (i.e., posterior inferior frontal gyrus, lateral orbitofrontal cortex, and dorsal anterior insula) guide the selection of this knowledge during emotions. We investigated the structural neuroanatomical correlates of emotional granularity in 58 healthy, older adults (ages 62-84 years), who have had a lifetime to accrue and deploy their conceptual knowledge of emotions. Participants reported on their daily experience of 13 emotions for 8 weeks and underwent structural magnetic resonance imaging. We computed intraclass correlation coefficients across daily emotional experience surveys (45 surveys on average per participant) to quantify each participant's overall emotional granularity. Surface-based morphometry analyses revealed higher overall emotional granularity related to greater cortical thickness in inferior frontal cortex (p FWE < 0.05) in bilateral clusters in the lateral orbitofrontal cortex and extending into the left dorsal anterior insula. Overall emotional granularity was not associated with cortical thickness in the anterior temporal lobes or angular gyri. These findings suggest individual differences in emotional granularity relate to variability in the structural neuroanatomy of the inferior frontal cortex, an area that supports the controlled selection of conceptual knowledge during emotional experiences.
(© 2023. The Author(s).)
Databáze: MEDLINE
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