Separable responses to error, ambiguity, and reaction time in cingulo-opercular task control regions.
Separable responses to error, ambiguity, and reaction time in cingulo-opercular task control regions.
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DOI：
10.1016/j.neuroimage.2014.05.053
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发表时间：
2014-10-01
期刊：
影响因子：
5.7
通讯作者：
Petersen SE
中科院分区：
文献类型：
--
作者：
Neta M;Schlaggar BL;Petersen SE
背侧前扣带回（dACC），沿着与紧密相连的前扣带/额盖已被证明显示三种类型的任务控制信号在各种各样的任务。这些信号之一，被认为代表性能反馈的瞬态信号，显示出比正确试验更大的错误活动。其他研究也发现了不确定性/模糊性或冲突的类似影响，尽管有些人认为dACC活动主要是由反应时间更多反映的其他过程调节的。在这里，我们证明，而不是一个单一的解释，多个信息处理操作是至关重要的特征，这些大脑区域的功能，通过比较操作在一个单一的范例。参与者在功能磁共振成像实验中执行两项任务：（1）决定视觉呈现的单词对是否押韵，以及（2）将抽象或具体的单词分类。飞行员被用来识别两个任务的模糊刺激（例如，单词对：BASS/GRACE;单个单词：CHANGE）。我们发现更大的扣带-鳃盖活动的错误和模棱两可的试验比明确/正确的试验，具有强大的影响反应时间。当反应时回归时，错误和歧义的影响仍然存在，尽管差异有所减少。进一步逐步回归的反应共识（协议的参与者对每个刺激;代理的模糊性）之间的差异减少模糊和明确的试验，但留下的错误相关的差异几乎完全不变。这些观察结果表明，试验明智的反应，在扣带枕骨区域监测多个性能指标，包括准确性，模糊性和反应时间。
The dorsal anterior cingulate (dACC), along with the closely affiliated anterior insula/frontal operculum have been demonstrated to show three types of task control signals across a wide variety of tasks. One of these signals, a transient signal that is thought to represent performance feedback, shows greater activity to error than correct trials. Other work has found similar effects for uncertainty/ambiguity or conflict, though some argue that dACC activity is, instead, modulated primarily by other processes more reflected in reaction time. Here, we demonstrate that, rather than a single explanation, multiple information processing operations are crucial to characterizing the function of these brain regions, by comparing operations within a single paradigm. Participants performed two tasks in an fMRI experimental session: (1) deciding whether or not visually presented word pairs rhyme, and (2) rating auditorily presented single words as abstract or concrete. A pilot was used to identify ambiguous stimuli for both tasks (e.g., word pair: BASS/GRACE; single word: CHANGE). We found greater cingulo-opercular activity for errors and ambiguous trials than clear/correct trials, with a robust effect of reaction time. The effects of error and ambiguity remained when reaction time was regressed out, although the differences decreased. Further stepwise regression of response consensus (agreement across participants for each stimulus; a proxy for ambiguity) decreased differences between ambiguous and clear trials, but left error-related differences almost completely intact. These observations suggest that trial-wise responses in cinguloopercular regions monitor multiple performance indices, including accuracy, ambiguity, and reaction time.
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影响因子：
5.3
作者：
BLASDEL, GG
通讯作者：
BLASDEL, GG
影响因子：
16.2
作者：
Grinband, J;Hirsch, J;Ferrera, VP
通讯作者：
Ferrera, VP
影响因子：
8.2
作者：
Mitchell, Jason P.;Heatherton, Todd F.;Macrae, C. Neil
通讯作者：
Macrae, C. Neil
影响因子：
56.9
作者：
Ito, S;Stuphorn, V;Schall, JD
通讯作者：
Schall, JD
DOI：
10.3758/bf03204507
发表时间：
1993-05-01
期刊：
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS
影响因子：
--
作者：
COHEN, J;MACWHINNEY, B;PROVOST, J
通讯作者：
PROVOST, J