Image Sciences Institute, UMC Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
Behav Brain Res. 2013 Jul 1;248:41-5. doi: 10.1016/j.bbr.2013.03.041. Epub 2013 Apr 8.
Typically, it is believed that palatable, high caloric foods signal reward and trigger indulgent responses. However, Counteractive Control Theory suggests that, to the extent that people are concerned about their weight, a confrontation with palatable foods should also trigger 'alarm bell responses' which promote successful self-control. Our study is the first to investigate such counteractive control processes in the brain employing functional magnetic resonance imaging (fMRI) in a sample of successful self-regulators. Indeed, besides the traditional finding that foods elicit heightened attention as witnessed by greater activation of primary visual cortex, we found that viewing palatable foods elicited brain activation in areas associated with self-regulation. Crucially, brain activation in self-regulation areas was related to diet importance. Thus, our results are the first to show that food cues not only evoke hedonic brain responses; in successful self-regulators they also trigger alarm bell responses, which may reflect the neural processes underlying successful self-control.
通常认为,美味、高热量的食物会发出奖励信号,并引发放纵反应。然而,反向控制理论表明,在一定程度上,人们关注自己的体重,那么面对美味的食物也应该会引发“警钟反应”,从而促进成功的自我控制。我们的研究首次在成功的自我调节者样本中使用功能磁共振成像(fMRI)来研究这种反向控制过程。事实上,除了传统的发现食物会引起更高的注意力,这可以通过初级视觉皮层的更大激活来证明,我们还发现,观看美味的食物会引起与自我调节相关的大脑区域的激活。至关重要的是,自我调节区域的大脑激活与饮食的重要性有关。因此,我们的结果首次表明,食物线索不仅会引起愉悦的大脑反应;在成功的自我调节者中,它们还会引发警钟反应,这可能反映了成功自我控制的神经过程。