Ventral striatum activation to prosocial rewards predicts longitudinal declines in adolescent risk taking.
Ventral striatum activation to prosocial rewards predicts longitudinal declines in adolescent risk taking.
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DOI：
10.1016/j.dcn.2012.08.004
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发表时间：
2013-01
影响因子：
4.7
通讯作者：
Galván A
中科院分区：
文献类型：
--
作者：
Telzer EH;Fuligni AJ;Lieberman MD;Galván A
青春期是一个情绪强烈的时期，也是一个动机行为和激情增加的时期。来自发育神经科学的证据表明，这种高度的情绪化部分是由于对奖励刺激的功能反应达到峰值，这使得青少年更倾向于寻求奖励的行为。大多数先前的工作都集中在奖励敏感性如何可能会产生漏洞，导致风险承担的增加。在这里，我们测试是否提高奖励敏感性可能是青少年从事亲社会活动时的资产。研究人员对32名青少年进行了为期一年的跟踪调查，以研究腹侧纹状体对亲社会奖励的激活是否预示着一年内冒险行为的减少。结果表明，腹侧纹状体激活亲社会刺激与纵向下降的风险承担。因此，赋予青少年冒险脆弱性的同一个神经区域也可能对冒险具有保护作用。
Adolescence is a period of intensified emotions and an increase in motivated behaviors and passions. Evidence from developmental neuroscience suggests that this heightened emotionality occurs, in part, due to a peak in functional reactivity to rewarding stimuli, which renders adolescents more oriented towards reward-seeking behaviors. Most prior work has focused on how reward sensitivity may create vulnerabilities, leading to increases in risk taking. Here, we test whether heightened reward sensitivity may potentially be an asset for adolescents when engaged in prosocial activities. Thirty-two adolescents were followed over a one-year period to examine whether ventral striatum activation to prosocial rewards predicts decreases in risk taking over a year. Results show that heightened ventral striatum activation to prosocial stimuli relates to longitudinal declines in risk taking. Therefore, the very same neural region that has conferred vulnerability for adolescent risk taking may also be protective against risk taking.