Neural control of enhanced filtering demands in a combined Flanker and Garner conflict task.
Neural control of enhanced filtering demands in a combined Flanker and Garner conflict task.
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DOI：
10.1371/journal.pone.0120582
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Herrmann M
中科院分区：
文献类型：
--
作者：
Berron D;Frühholz S;Herrmann M
一些研究表明，视觉过滤机制可能是解决侧翼冲突和控制加纳效应的基础。然而，目前尚不清楚这两种效应的处理机制是否依赖于类似的过滤机制，从而特别是加纳效应能够调节侧翼冲突中的过滤需求。在目前的实验中，24名受试者参与了两次功能性磁共振成像(FMRI)记录过程中加纳和侧翼的联合任务。行为数据显示有明显的侧翼，但没有加纳效应。然而，运行分析显示，在第一次实验运行中，加纳滤波条件下存在侧翼效应，而在第二次实验运行中，我们在加纳基线条件下发现了侧翼效应。功能磁共振成像数据显示，额顶网络参与了两种类型的效应的处理。侧翼干扰与额叶下回、扣带回前叶、楔前叶、顶下小叶和顶上小叶的活动有关。Garner干扰与额中回、颞中回、舌回以及IPL和SPL的激活有关。加纳效应和侧翼效应之间的相互作用分析进一步揭示了两个实验运行之间的差异。在第一次实验中，我们在额叶和顶叶区域发现了与效应相互作用特别相关的活动，而在第二次实验中，我们在海马区、海马旁皮质和基底节发现了活动。交互作用活动的这种变化可能与控制过滤需求的任务相关的学习过程有关。特别是，知觉学习机制可能在目前的侧翼和加纳任务设计中发挥关键作用，因此，第二次实验中成绩的提高可能是整个实验水平上缺乏行为加纳干扰的原因。
Several studies demonstrated that visual filtering mechanisms might underlie both conflict resolution of the Flanker conflict and the control of the Garner effect. However, it remains unclear whether the mechanisms involved in the processing of both effects depend on similar filter mechanisms, such that especially the Garner effect is able to modulate filtering needs in the Flanker conflict. In the present experiment twenty-four subjects participated in a combined Garner and Flanker task during two runs of functional magnetic resonance imaging (fMRI) recordings. Behavioral data showed a significant Flanker but no Garner effect. A run-wise analysis, however, revealed a Flanker effect in the Garner filtering condition in the first experimental run, while we found a Flanker effect in the Garner baseline condition in the second experimental run. The fMRI data revealed a fronto-parietal network involved in the processing of both types of effects. Flanker interference was associated with activity in the inferior frontal gyrus, the anterior cingulate cortex, the precuneus as well as the inferior (IPL) and superior parietal lobule (SPL). Garner interference was associated with activation in middle frontal and middle temporal gyrus, the lingual gyrus as well as the IPL and SPL. Interaction analyses between the Garner and the Flanker effect additionally revealed differences between the two experimental runs. In the first experimental run, activity specifically related to the interaction of effects was found in frontal and parietal regions, while in the second run we found activity in the hippocampus, the parahippocampal cortex and the basal ganglia. This shift in activity for the interaction effects might be associated with a task-related learning process to control filtering demands. Especially perceptual learning mechanisms might play a crucial role in the present Flanker and Garner task design and, therefore, increased performance in the second experimental run could be the reason for the lack of behavioral Garner interference on the level of the whole experiment.
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影响因子：
5.7
作者：
Egner, Tobias;Delano, Margaret;Hirsch, Joy
通讯作者：
Hirsch, Joy
影响因子：
4.1
作者：
GRATTON, G;COLES, MGH;DONCHIN, E
通讯作者：
DONCHIN, E
影响因子：
2.6
作者：
Akyurek, Elkan G.;Vallines, Ignacio;Schuboe, Anna
通讯作者：
Schuboe, Anna
DOI：
10.3758/bf03208371
发表时间：
1995-11-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
BENARTZI, E;MARKS, LE
通讯作者：
MARKS, LE
影响因子：
2.6
作者：
Fruehholz, Sascha;Jellinghaus, Anne;Herrmann, Manfred
通讯作者：
Herrmann, Manfred