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Linking trait-based phenotypes to prefrontal cortex activation during inhibitory control.

ABSTRACT: Inhibitory control is subserved in part by discrete regions of the prefrontal cortex whose functionality may be altered according to specific trait-based phenotypes. Using a unified model of normal range personality traits, we examined activation within lateral and medial aspects of the prefrontal cortex during a manual go/no-go task. Evoked hemodynamic oxygenation within the prefrontal cortex was measured in 106 adults using a 16-channel continuous-wave functional near-infrared spectroscopy system. Within lateral regions of the prefrontal cortex, greater activation was associated with higher trait levels of extraversion, agreeableness and conscientiousness, and lower neuroticism. Higher agreeableness was also related to more activation in the medial prefrontal cortex during inhibitory control. These results suggest that personality traits reflecting greater emotional stability, extraversion, agreeableness and conscientiousness may be associated with more efficient recruitment of control processes subserved by lateral regions of the prefrontal cortex. These findings highlight key links between trait-based phenotypes and neural activation patterns in the prefrontal cortex underlying inhibitory control.

SUBMITTER: Rodrigo AH

PROVIDER: S-EPMC4692316 | biostudies-other | 2016 Jan

REPOSITORIES: biostudies-other

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Linking trait-based phenotypes to prefrontal cortex activation during inhibitory control.

Rodrigo Achala H AH Di Domenico Stefano I SI Graves Bryanna B Lam Jaeger J Ayaz Hasan H Bagby R Michael RM Ruocco Anthony C AC

Social cognitive and affective neuroscience 20150710 1

Inhibitory control is subserved in part by discrete regions of the prefrontal cortex whose functionality may be altered according to specific trait-based phenotypes. Using a unified model of normal range personality traits, we examined activation within lateral and medial aspects of the prefrontal cortex during a manual go/no-go task. Evoked hemodynamic oxygenation within the prefrontal cortex was measured in 106 adults using a 16-channel continuous-wave functional near-infrared spectroscopy sys ...[more]

PMID: 26163672

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Project description:OBJECTIVE:The anterior cingulate cortex (ACC) is critical for both stress and inhibitory control processes and has been implicated in childhood trauma. This prospective study tested the hypothesis that early trauma moderates the association between inhibitory control during late childhood and ACC stress reactivity during adolescence. METHOD:Sixty-four adolescents were stratified into higher- or lower-childhood-trauma groups. Inhibitory control was indicated by fewer errors on a Stroop Color-Word task. Personalized stress cues during functional magnetic resonance imaging assessed neural correlates of stress in adolescents. RESULTS:Using a priori-defined anterior (rCZa) and posterior rostral cingulate zones of the ACC, associated with Stroop Color-Word task performance in prior meta-analyses, Stroop errors correlated inversely with activation in the rCZa during stress-cue exposure (r?=?-.23, p?=?.04). Childhood trauma moderated the association between Stroop errors and rCZa stress reactivity (interaction?=?-1.26, p?=?.02, 95%CI?=?-2.33,-0.20), where Stroop errors were inversely associated with brain activation among those with higher childhood trauma (simple slopes?=?-.83, p?=?.007, 95%CI?=?-1.40,-0.25). Low stress-related rCZa activation inversely (R2?=?0.19, b?=?-0.43, p?=?.001, 95%CI?=?-4.11,-1.06) and Stroop errors directly (R2?=?0.09, b?=?0.27, p?=?.048, 95%CI?=?0.02, 5.8) associated with baseline subjective anxiety while controlling for childhood trauma. CONCLUSIONS:This is the first study to demonstrate a moderating role of childhood trauma on the relationship between inhibitory control and stress-related ACC activation. Childhood trauma may portend neurodevelopmental changes that impede recruitment of control-associated ACC-functioning during distress, which may relate to dysregulation of stress-induced affective responses. Further work is needed to elucidate relationships between childhood trauma and addictive behaviors precipitated by stress.

Dataset Information

Linking trait-based phenotypes to prefrontal cortex activation during inhibitory control.

Publications

Linking trait-based phenotypes to prefrontal cortex activation during inhibitory control.

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