Department of Psychology, Boston College, McGuinn Hall, Chestnut Hill, MA 02467, USA.
Conscious Cogn. 2011 Dec;20(4):1768-75. doi: 10.1016/j.concog.2011.03.013. Epub 2011 Apr 9.
Inattentional blindness is the failure to perceive salient stimuli presented at unattended locations. Whereas the behavioral manifestation of inattentional blindness has been investigated, the neural basis of this phenomenon has remained elusive. In the current study, event-related fMRI was used to identify the neural substrates associated with inattentional blindness. During central fixation, participants named colored digits presented at a peripheral location. On a subset of trials, an unexpected checkerboard circle (the critical stimulus) was presented at the same eccentricity along with the colored digits (a post-scan questionnaire assessed participants' awareness of the critical stimulus). Neural activity during inattentional blindness was observed in the prefrontal cortex. Together with previous findings, these results call into question the widespread view that activity in the prefrontal cortex reflects conscious processing.
注意盲视是指未能注意到注意力未集中位置上呈现的显著刺激。虽然已经研究了注意盲视的行为表现，但该现象的神经基础仍然难以捉摸。在当前的研究中，使用事件相关 fMRI 来确定与注意盲视相关的神经基质。在中央注视期间，参与者命名呈现于外周位置的彩色数字。在一部分试验中，与彩色数字一起呈现一个意外的棋盘方格圆形（关键刺激）（在扫描后问卷调查中评估了参与者对关键刺激的意识）。在注意盲视期间观察到前额叶皮层中的神经活动。结合先前的研究结果，这些结果对前额叶皮层活动反映意识处理的普遍观点提出了质疑。
