Dimensionality of brain networks linked to life-long individual differences in self-control.
Dimensionality of brain networks linked to life-long individual differences in self-control.
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DOI：
10.1038/ncomms2374
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发表时间：
2013
影响因子：
16.6
通讯作者：
Jonides, John
中科院分区：
文献类型：
--
作者：
Berman, Marc G.;Yourganov, Grigori;Askren, Mary K.;Ayduk, Ozlem;Casey, B. J.;Gotlib, Ian H.;Kross, Ethan;McIntosh, Anthony R.;Strother, Stephen;Wilson, Nicole L.;Zayas, Vivian;Mischel, Walter;Shoda, Yuichi;Jonides, John
童年时期延迟满足的能力与青春期和成年期的积极成果有关。在这里，我们研究了一个子样本的参与者从一个开创性的纵向研究自我控制在整个主题的生命周期。自我控制最初是在4岁的儿童中进行的研究，40年后，在一项要求控制工作记忆内容的任务中，人们再次对自我控制进行了研究。我们研究了这项任务的大脑激活模式是否可以可靠地区分参与者一贯的低和高自我控制能力（低与高延迟）。我们发现，与高延迟器相比，低延迟器在执行任务时招募了显着更高维的神经网络。与低延迟者相比，高延迟者的神经模式也更均匀。根据这些大脑模式，我们可以以71%的准确率预测参与者是高延迟者还是低延迟者。目前的研究结果表明，神经网络的维度是自我控制能力的生物预测。
The ability to delay gratification in childhood has been linked to positive outcomes in adolescence and adulthood. Here we examine a subsample of participants from a seminal longitudinal study of self-control throughout a subject’s lifespan. Self control, first studied in children at age 4, is now reexamined 40 years later, on a task that required control over the contents of working memory. We examine whether patterns of brain activation on this task can reliably distinguish participants with consistently low and high self-control abilities (low vs. high delayers). We find that low delayers recruit significantly higher-dimensional neural networks when performing the task compared to high delayers. High delayers are also more homogeneous as a group in their neural patterns compared to low delayers. From these brain patterns we can predict with 71% accuracy, whether a participant is a high or low delayer. The present results suggest that dimensionality of neural networks is a biological predictor of self-control abilities.
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