Right parietal cortex plays a critical role in change blindness
Right parietal cortex plays a critical role in change blindness
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DOI：
10.1093/cercor/bhj017
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发表时间：
2006-05-01
期刊：
影响因子：
3.7
通讯作者：
Lavie, N
中科院分区：
文献类型：
--
作者：
Beck, DM;Muggleton, N;Lavie, N
越来越多的功能磁共振成像（fMRI）证据表明，视觉意识不仅与腹侧视皮层的活动有关，而且与顶叶皮层的活动有关。然而，由于神经成像的相关性，目前还不清楚这种顶叶活动是否在意识中起着因果作用。在这里介绍的实验中，我们通过在这些区域施加重复的经颅磁刺激（rTMS）来破坏右侧或左侧顶叶皮层的活动，同时受试者试图检测由短暂间隔分开的两个图像之间的变化（即1次变化检测任务）。我们发现，rTMS应用于右顶叶皮层，而不是左顶叶皮层导致更长的潜伏期，以检测变化和更大的变化失明率相比，没有TMS。这些结果表明，右顶叶皮层在意识变化检测中起着至关重要的作用。
There is increasing evidence from functional magnetic resonance imaging (fMRI) that visual awareness is not only associated with activity in ventral visual cortex but also with activity in the parietal cortex. However, due to the correlational nature of neuroimaging, it remains unclear whether this parietal activity plays a causal role in awareness. In the experiment presented here we disrupted activity in right or left parietal cortex by applying repetitive transcranial magnetic stimulation (rTMS) over these areas while subjects attempted to detect changes between two images separated by a brief interval (i.e. 1-shot change detection task). We found that rTMS applied over right parietal cortex but not left parietal cortex resulted in longer latencies to detect changes and a greater rate of change blindness compared with no TMS. These results suggest that the right parietal cortex plays a critical role in conscious change detection.