Confidence in recognition memory for words: Dissociating right prefrontal roles in episodic retrieval
Confidence in recognition memory for words: Dissociating right prefrontal roles in episodic retrieval
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DOI：
10.1162/08989290051137468
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发表时间：
2000-11-01
影响因子：
3.2
通讯作者：
Dolan, RJ
中科院分区：
文献类型：
--
作者：
Henson, RNA;Rugg, MD;Dolan, RJ
我们使用事件相关的功能磁共振成像（efMRI），以调查大脑区域显示不同的反应作为一个功能的信心，在情节的文字识别任务。12名健康的志愿者表示他们的新旧判断是以高或低的信心做出的。与每个判断相关的血流动力学反应用“早期”和“晚期”反应函数建模。正如先前的识别研究所产生的监测假设所预测的那样[Henson，R。N.一、Rugg，M. D、Shallice，T.，Josephs，O.，和多兰河J.（1999 a）。再认记忆中的回忆和熟悉：一项事件相关功能磁共振成像研究。Journal of Neuroscience 19，3962-3972]，右背外侧前额叶区域对正确的低置信度判断与正确的高置信度判断表现出更大的反应。几个区域，包括楔前叶，后扣带回，和左侧顶叶皮层，表现出更大的反应，以正确的旧比正确的新的判断。左前额叶前部和右前额叶前部也表现出新旧差异，但这些区域的差异出现的时间相对较晚。这些结果进一步支持的建议，不同的子区域的前额叶皮层subserve不同的功能在情节提取。这些功能进行了讨论的监测过程中，当熟悉程度接近响应标准，并与不自信的判断，和回忆的过程中，这是与自信的老单词的识别。
We used event-related functional magnetic resonance imaging (efMRI) to investigate brain regions showing differential responses as a function of confidence in an episodic word recognition task. Twelve healthy volunteers indicated whether their old-new judgments were made with high or low confidence. Hemodynamic responses associated with each judgment were modeled with an "early" and a "late" response function. As predicted by the monitoring hypothesis generated from a previous recognition study [Henson, R. N. A., Rugg, M. D., Shallice, T., Josephs, O., & Dolan, R. J. (1999a). Recollection and familiarity in recognition memory: An event-related fMRI study. Journal of Neuroscience 19, 3962-3972], a right dorsolateral prefrontal region showed a greater response to correct low- versus correct high-confidence judgements. Several regions, including the precuneus, posterior cingulate, and left lateral parietal cortex, showed greater responses to correct old than correct new judgements. The anterior left and right prefrontal regions also showed an old-new difference, but for these regions the difference emerged relatively later in time. These results further support the proposal that different subregions of the prefrontal cortex subserve different functions during episodic retrieval. These functions are discussed in relation to a monitoring process, which operates when familiarity levels are close to response criterion and is associated with nonconfident judgements, and a recollective process, which is associated with the confident recognition of old words.