Peers increase adolescent risk taking by enhancing activity in the brain's reward circuitry.
Peers increase adolescent risk taking by enhancing activity in the brain's reward circuitry.
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DOI：
10.1111/j.1467-7687.2010.01035.x
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发表时间：
2011-03
影响因子：
3.7
通讯作者：
Steinberg L
中科院分区：
文献类型：
--
作者：
Chein J;Albert D;O'Brien L;Uckert K;Steinberg L
同龄人的存在增加了青少年而不是成年人的冒险行为。我们假设，同龄人的存在可能会促进青少年的风险承担，通过敏感的大脑区域与预期的潜在回报。使用功能磁共振成像，我们测量了青少年，年轻人和成年人在模拟驾驶任务中做出决定时的大脑活动。参与者在独自一人的情况下完成了一个任务块，在相邻房间的同伴观察他们的表现时完成了一个任务块。在同伴观察阶段，青少年选择性地在奖励相关的大脑区域表现出更大的激活，包括腹侧纹状体和眶额皮质，这些区域的活动预测了随后的冒险行为。与认知控制相关的大脑区域被青少年招募的程度低于成年人，但认知控制系统的活动并不随社会背景而变化。结果表明，同龄人的存在增加了青少年的风险承担，通过提高敏感性的潜在回报价值的风险决策。
The presence of peers increases risk taking among adolescents but not adults. We posited that the presence of peers may promote adolescent risk taking by sensitizing brain regions associated with the anticipation of potential rewards. Using fMRI, we measured brain activity in adolescents, young adults, and adults as they made decisions in a simulated driving task. Participants completed one task block while alone, and one block while their performance was observed by peers in an adjacent room. During peer observation blocks, adolescents selectively demonstrated greater activation in reward-related brain regions, including the ventral striatum and orbitofrontal cortex, and activity in these regions predicted subsequent risk taking. Brain areas associated with cognitive control were less strongly recruited by adolescents than adults, but activity in the cognitive control system did not vary with social context. Results suggest that the presence of peers increases adolescent risk taking by heightening sensitivity to the potential reward value of risky decisions.
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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
影响因子：
1.5
作者：
Luciana M;Collins PF;Olson EA;Schissel AM
通讯作者：
Schissel AM
影响因子：
4
作者：
Gardner, M;Steinberg, L
通讯作者：
Steinberg, L
影响因子：
6.6
作者：
Casey, B. J.;Getz, Sarah;Galvan, Adriana
通讯作者：
Galvan, Adriana
DOI：
10.1093/cercor/bhp225
发表时间：
2010-07
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
Geier CF;Terwilliger R;Teslovich T;Velanova K;Luna B
通讯作者：
Luna B