Activity in face-responsive brain regions is modulated by invisible, attended faces: evidence from masked priming.
Activity in face-responsive brain regions is modulated by invisible, attended faces: evidence from masked priming.
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DOI：
10.1093/cercor/bhn048
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发表时间：
2009-01
期刊：
影响因子：
--
通讯作者：
Henson RN
中科院分区：
文献类型：
--
作者：
Kouider S;Eger E;Dolan R;Henson RN
人们通常认为，灵长类动物大脑皮层中面部反应区域的神经活动与有意识的面部感知相关。然而，这种活动是否在没有意识的情况下发生仍然存在争议。使用功能磁共振成像（fMRI）结合一种新的蒙面脸启动范式，我们观察到的神经调制，不能归因于知觉意识。更具体地说，我们发现，当一张脸之前有一张相同脸的短暂闪现图像时，相对于另一张脸，即使同一张脸的两张图像不同，几个经典的面部处理区域的活动也会减少，包括“梭状脸区域”、“枕面部区域”和上级颞沟。重要的是，与大多数以前的研究不同，这些研究通过使用注意力不集中的条件来最小化意识，本研究的结果发生在刺激（启动）被注意的时候。相比之下，当启动被有意识地感知时，在长滞后启动范式中，我们发现在额外的额叶和顶叶区域中与重复相关的活动增加。这些数据不仅证明了面部反应区域的fMRI活动可以独立于知觉意识进行调节，而且还记录了这种阈下面部处理发生的位置（即，限制于枕叶和颞叶皮层的面部响应区域）以及到什么程度（即，独立于特定图像）。
It is often assumed that neural activity in face-responsive regions of primate cortex correlates with conscious perception of faces. However, whether such activity occurs without awareness is still debated. Using functional magnetic resonance imaging (fMRI) in conjunction with a novel masked face priming paradigm, we observed neural modulations that could not be attributed to perceptual awareness. More specifically, we found reduced activity in several classic face-processing regions, including the “fusiform face area,” “occipital face area,” and superior temporal sulcus, when a face was preceded by a briefly flashed image of the same face, relative to a different face, even when 2 images of the same face differed. Importantly, unlike most previous studies, which have minimized awareness by using conditions of inattention, the present results occurred when the stimuli (the primes) were attended. By contrast, when primes were perceived consciously, in a long-lag priming paradigm, we found repetition-related activity increases in additional frontal and parietal regions. These data not only demonstrate that fMRI activity in face-responsive regions can be modulated independently of perceptual awareness, but also document where such subliminal face-processing occurs (i.e., restricted to face-responsive regions of occipital and temporal cortex) and to what extent (i.e., independent of the specific image).
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DOI：
10.1073/pnas.96.4.1790
发表时间：
1999-02-16
影响因子：
11.1
作者：
Bar, M;Biederman, I
通讯作者：
Biederman, I
影响因子：
5.7
作者：
Deichmann, R;Gottfried, JA;Turner, R
通讯作者：
Turner, R
影响因子：
3.7
作者：
Beck, DM;Muggleton, N;Lavie, N
通讯作者：
Lavie, N
DOI：
10.1037/0096-1523.27.1.154
发表时间：
2001-02-01
影响因子：
2.1
作者：
Damian, MF
通讯作者：
Damian, MF
影响因子：
4.1
作者：
GREENWALD, AG;SCHUH, ES;KLINGER, MR
通讯作者：
KLINGER, MR