Differential activation of frontoparietal attention networks by social and symbolic spatial cues.
Differential activation of frontoparietal attention networks by social and symbolic spatial cues.
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DOI：
10.1093/scan/nsq008
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发表时间：
2010-12
影响因子：
4.2
通讯作者：
Calder AJ
中科院分区：
文献类型：
--
作者：
Engell AD;Nummenmaa L;Oosterhof NN;Henson RN;Haxby JV;Calder AJ
对凝视方向和符号方向线索（例如箭头）的感知使观察者的注意力指向所指示的位置。然而，目前尚不清楚这些类似的行为效应是否是相同注意力现象的例子，因此是否受到相同神经基质的影响。有人提出，凝视，鉴于其进化意义，构成了一个“特殊”类别的空间线索。因此，可以预测，支持空间重定向的神经系统对于凝视将不同于对于非生物符号。我们使用功能性磁共振成像来测量大脑在目标定位过程中的反应，其中侧向呈现的目标之前是无信息的凝视或箭头提示，来测试这一预测。反应时间更快，在有效的比无效的试验，箭头和凝视线索。然而，在大脑中诱发了不同的活动模式。包括无效而不是有效的箭头提示的试验导致腹侧注意力网络中更强的血流动力学反应。在包括有效和无效凝视线索的试验中没有观察到这种差异。腹侧重定向网络的这种差异性参与与以下概念一致，即通过凝视线索和箭头线索促进目标检测是由不同的神经基质所支配的。
Perception of both gaze-direction and symbolic directional cues (e.g. arrows) orient an observer’s attention toward the indicated location. It is unclear, however, whether these similar behavioral effects are examples of the same attentional phenomenon and, therefore, subserved by the same neural substrate. It has been proposed that gaze, given its evolutionary significance, constitutes a ‘special’ category of spatial cue. As such, it is predicted that the neural systems supporting spatial reorienting will be different for gaze than for non-biological symbols. We tested this prediction using functional magnetic resonance imaging to measure the brain’s response during target localization in which laterally presented targets were preceded by uninformative gaze or arrow cues. Reaction times were faster during valid than invalid trials for both arrow and gaze cues. However, differential patterns of activity were evoked in the brain. Trials including invalid rather than valid arrow cues resulted in a stronger hemodynamic response in the ventral attention network. No such difference was seen during trials including valid and invalid gaze cues. This differential engagement of the ventral reorienting network is consistent with the notion that the facilitation of target detection by gaze cues and arrow cues is subserved by different neural substrates.
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影响因子：
9.2
作者：
Calder, Andrew J.;Beaver, John D.;Winston, Joel S.;Dolan, Ray J.;Jenkins, Rob;Eger, Evelyn;Henson, Richard N. A.
通讯作者：
Henson, Richard N. A.
影响因子：
5.7
作者：
Geyer, S;Schleicher, A;Zilles, K
通讯作者：
Zilles, K
影响因子：
3.5
作者：
Friesen, CK;Kingstone, A
通讯作者：
Kingstone, A
影响因子：
2.6
作者：
Farroni, Teresa;Menon, Enrica;Johnson, Mark H.
通讯作者：
Johnson, Mark H.
影响因子：
3.2
作者：
Corbetta, M;Kincade, JM;Shulman, GL
通讯作者：
Shulman, GL