Restricting temptations: neural mechanisms of precommitment.
Restricting temptations: neural mechanisms of precommitment.
复制标题
限制诱惑：预订的神经机制。
DOI：
10.1016/j.neuron.2013.05.028
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发表时间：
2013-07-24
期刊：
影响因子：
16.2
通讯作者：
Kalenscher T
中科院分区：
文献类型：
--
作者：
Crockett MJ;Braams BR;Clark L;Tobler PN;Robbins TW;Kalenscher T
人类可以通过发挥意志力来抵制诱惑，即努力抑制冲动。但意志力会受到情绪的干扰，并随着时间的推移而耗尽。幸运的是，人类可以采取替代的自我控制策略，例如预先承诺，自愿限制接触诱惑。在这里，我们使用功能磁共振成像检查了意志力和预先承诺的神经机制。在行为上，相对于意志力，预先承诺有助于选择大量延迟奖励，尤其是对于更冲动的人。意志力与背外侧前额叶皮层（DLPFC）、后顶叶皮层（PPC）和额下回的激活有关，而预先承诺则与外侧额极皮层（LFPC）的激活有关。在预承诺期间，LFPC 显示出与 DLPFC 和 PPC 的功能连接增加，特别是在更冲动的个体中，冲动性和 LFPC 连接之间的关系是由腹内侧 PFC 中的价值相关激活介导的。我们的研究结果支持自我控制的分层模型，其中 LFPC 通过控制尾部前额叶区域的行动计划作为期望值的函数来协调预先承诺。预先承诺是自愿限制接触诱惑的机会。预先承诺是比意志力更有效的自我控制策略。预先承诺涉及LFPC；意志力参与 DLPFC 和 PPC 在预承诺期间，LFPC 增加了与 DLPFC 和 PPC Crocket 等人的连接。研究表明，在预先承诺期间，即自愿限制对诱惑的接触，外侧额极皮层被激活，并增加了与背外侧前额叶和后顶叶皮层的功能连接——这些区域与积极抵制诱惑相关。
Humans can resist temptations by exerting willpower, the effortful inhibition of impulses. But willpower can be disrupted by emotions and depleted over time. Luckily, humans can deploy alternative self-control strategies like precommitment, the voluntary restriction of access to temptations. Here, we examined the neural mechanisms of willpower and precommitment using fMRI. Behaviorally, precommitment facilitated choices for large delayed rewards, relative to willpower, especially in more impulsive individuals. While willpower was associated with activation in dorsolateral prefrontal cortex (DLPFC), posterior parietal cortex (PPC), and inferior frontal gyrus, precommitment engaged lateral frontopolar cortex (LFPC). During precommitment, LFPC showed increased functional connectivity with DLPFC and PPC, especially in more impulsive individuals, and the relationship between impulsivity and LFPC connectivity was mediated by value-related activation in ventromedial PFC. Our findings support a hierarchical model of self-control in which LFPC orchestrates precommitment by controlling action plans in more caudal prefrontal regions as a function of expected value. Precommitment is the voluntary restriction of access to temptations Precommitment is a more effective self-control strategy than willpower Precommitment engages LFPC; willpower engages DLPFC and PPC During precommitment, LFPC increases connectivity with DLPFC and PPC Crocket et al. show that during precommitment, which involves voluntarily restricting access to temptations, lateral frontopolar cortex is activated and increases functional connectivity with dorsolateral prefrontal and posterior parietal cortex—the same regions associated with actively resisting temptations.
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影响因子：
56.9
作者：
Hare, Todd A.;Camerer, Colin F.;Rangel, Antonio
通讯作者：
Rangel, Antonio
DOI：
10.1523/jneurosci.0919-12.2013
发表时间：
2013-01-02
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Jimura K;Chushak MS;Braver TS
通讯作者：
Braver TS
影响因子：
7.6
作者：
BARON, RM;KENNY, DA
通讯作者：
KENNY, DA
影响因子：
64.8
作者：
Daw, Nathaniel D.;O'Doherty, John P.;Dayan, Peter;Seymour, Ben;Dolan, Raymond J.
通讯作者：
Dolan, Raymond J.
影响因子：
3
作者：
Kurth-Nelson, Zeb;Redish, A. David
通讯作者：
Redish, A. David