젊은 성인에서 위험 회피 기질과 우전두엽 및 좌두정엽과의 관련성：피질두께 분석
The Relationship between Harm Avoidance Temperament and Right Frontal and Left Parietal Lobes in Young Adults：A Cortical Thickness Analysis
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objectives：Increasing evidence suggests the presence of neurobiological bases for temperamental characteristics in humans. Brain correlates of harm avoidance(HA) have been most extensively studied using functional and structural brain imaging methods due to its potential link with anxiety and depressive disorders. To date, however, we are not aware of any reports that have examined the potential relationship between HA levels and regional cortical thickness. The aim of the current study is to examine the cortical thickness which is associated with HA temperament in healthy young subjects. Methods：Twenty-eight young, healthy individuals(13 men and 15 women, mean age, 29.4 ± 6.3 years) were screened for eligibility and administered the Korean version of the Cloninger’s Temperament and Character Inventory and underwent high-resolution structural magnetic resonance imaging scanning. Results：HA was associated with cortical thickness in the right superior frontal cortex and in the left parietal cortex, adjusted for age and sex and corrected for multiple comparisons using the permutation testing method. Conclusion：Individual temperamental differences in HA are associated with structural variations in specific areas of the brain. The fact that these brain regions are involved in top-down modulations of subcortical fear reactions adds functional significance to current findings.
Abstract
objectives：Increasing evidence suggests the presence of neurobiological bases for temperamental characteristics in humans. Brain correlates of harm avoidance(HA) have been most extensively studied using functional and structural brain imaging methods due to its potential link with anxiety and depressive disorders. To date, however, we are not aware of any reports that have examined the potential relationship between HA levels and regional cortical thickness. The aim of the current study is to examine the cortical thickness which is associated with HA temperament in healthy young subjects. Methods：Twenty-eight young, healthy individuals(13 men and 15 women, mean age, 29.4 ± 6.3 years) were screened for eligibility and administered the Korean version of the Cloninger’s Temperament and Character Inventory and underwent high-resolution structural magnetic resonance imaging scanning. Results：HA was associated with cortical thickness in the right superior frontal cortex and in the left parietal cortex, adjusted for age and sex and corrected for multiple comparisons using the permutation testing method. Conclusion：Individual temperamental differences in HA are associated with structural variations in specific areas of the brain. The fact that these brain regions are involved in top-down modulations of subcortical fear reactions adds functional significance to current findings.
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