Department of Psychology, University of Illinois, 603 East Daniel Street, Champaign, IL 61820, USA.
J Cogn Neurosci. 2013 Mar;25(3):374-87. doi: 10.1162/jocn_a_00331. Epub 2012 Nov 19.
Discordant development of brain regions responsible for cognitive control and reward processing may render adolescents susceptible to risk taking. Identifying ways to reduce this neural imbalance during adolescence can have important implications for risk taking and associated health outcomes. Accordingly, we sought to examine how a key family relationship-family obligation-can reduce this vulnerability. Forty-eight adolescents underwent an fMRI scan during which they completed a risk-taking and cognitive control task. Results suggest that adolescents with greater family obligation values show decreased activation in the ventral striatum when receiving monetary rewards and increased dorsolateral PFC activation during behavioral inhibition. Reduced ventral striatum activation correlated with less real-life risk-taking behavior and enhanced dorsolateral PFC activation correlated with better decision-making skills. Thus, family obligation may decrease reward sensitivity and enhance cognitive control, thereby reducing risk-taking behaviors.
大脑中负责认知控制和奖励处理的区域发育不同,可能使青少年容易冒险。确定在青少年时期减少这种神经失衡的方法,对于冒险行为和相关的健康结果有重要意义。因此,我们试图研究一种关键的家庭关系——家庭义务,如何减少这种脆弱性。48 名青少年接受了 fMRI 扫描,在此期间他们完成了一项冒险和认知控制任务。结果表明,家庭义务感较强的青少年在获得金钱奖励时,腹侧纹状体的激活减少,在行为抑制时背外侧前额叶皮层的激活增加。腹侧纹状体的激活减少与现实生活中的冒险行为减少相关,背外侧前额叶皮层的激活增加与更好的决策技能相关。因此,家庭义务感可能会降低奖励敏感性,增强认知控制,从而减少冒险行为。