Costumero V, Barrós-Loscertales A, Bustamante J C, Fuentes P, Rosell-Negre P, Ventura-Campos N, Ávila C
Departamento de Psicología Básica, Clínica y Psicobiología, Universitat Jaume I, Av. de Vicent Sos Baynat, s/n, 12071, Castelló de la Plana, Spain,
Brain Struct Funct. 2015;220(3):1807-21. doi: 10.1007/s00429-014-0760-6. Epub 2014 Apr 3.
Existing evidence suggests that the presence of reward cues modifies the activity in attentional networks, however, the nature of these influences remains poorly understood. Here, we performed independent component analysis (ICA) in two fMRI datasets corresponding to two incentive delay tasks, which compared the response to reward (money and erotic pictures) and neutral cues, and yielded activations in the ventral striatum using a general linear model approach. Across both experiments, ICA revealed that both the right frontoparietal network and default mode network time courses were positively and negatively modulated by reward cues, respectively. Moreover, this dual neural response pattern was enhanced in individuals with strong reward sensitivity. Therefore, ICA may be a complementary tool to investigate the relevant role of attentional networks on reward processing, and to investigate reward sensitivity in normal and pathological populations.
现有证据表明，奖励线索的存在会改变注意力网络的活动，然而，这些影响的本质仍知之甚少。在此，我们在两个功能磁共振成像（fMRI）数据集中进行了独立成分分析（ICA），这两个数据集对应于两个激励延迟任务，该任务比较了对奖励（金钱和色情图片）和中性线索的反应，并使用一般线性模型方法在腹侧纹状体中产生激活。在两个实验中，ICA均显示，右侧额顶叶网络和默认模式网络的时间进程分别受到奖励线索的正向和负向调节。此外，这种双重神经反应模式在具有强烈奖励敏感性的个体中增强。因此，ICA可能是一种补充工具，用于研究注意力网络在奖励处理中的相关作用，以及调查正常和病理人群中的奖励敏感性。
