Personality predicts working-memory-related activation in the caudal anterior cingulate cortex
Personality predicts working-memory-related activation in the caudal anterior cingulate cortex
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DOI：
10.3758/cabn.2.1.64
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发表时间：
2002-03-01
影响因子：
2.9
通讯作者：
Braver, Todd S.
中科院分区：
文献类型：
--
作者：
Gray, Jeremy R.;Braver, Todd S.
行为研究表明，人格的两个情感维度与工作记忆（WM）功能相关。已知 WM 负荷可调节尾部前扣带皮层 (ACC) 的神经活动，ACC 是对行为认知控制至关重要的大脑区域。在此基础上，我们假设 WM 任务期间尾部 ACC 的神经活动应与人格相关：与行为接近敏感性 (BAS) 呈负相关，与行为抑制敏感性 (BIS) 呈正相关。使用功能性磁共振成像，我们测量了 14 名执行三背 WM 任务的参与者的大脑活动。较高的自我报告 BAS 预示着更好的 WM 表现 (r -.27) 和尾侧 ACC 中与 WM 相关的较低激活 (r- -.84)，这表明认知控制方面的个性差异。这些数据支持了人格的接近-退缩（行动控制）理论，并建议对 ACC 和人格的主流观点进行改进。
Behavioral studies suggest that two affective dimensions of personality are associatedwith working memory (WM) function. WM load is known to modulate neural activity in the caudal anterior cingulate cortex (ACC), a brain region critical for the cognitive control of behavior. On this basis, we hypothesized that neural activity in the caudal ACC during a WM task should be associated with personality: correlated negatively with behavioral approach sensitivity (BAS) and positively with behavioral inhibition sensitivity (BIS). Using functional magnetic resonance imaging, we measured brain activity in 14 participants performing a three-back WM task. Higher self-reported BAS predicted better WM performance (r -.27) and lower WM-related activation in the caudal ACC (r- -.84), suggesting personality differences in cognitive control. The data bolster approach-withdrawal (action control) theories of personality and suggest refinements to the dominant views of ACC and personality.