Neural Response during Preference and Memory Judgments for Subliminally Presented Stimuli: A Functional Neuroimaging Study
Neural Response during Preference and Memory Judgments for Subliminally Presented Stimuli: A Functional Neuroimaging Study
复制标题
对潜意识呈现的刺激进行偏好和记忆判断时的神经反应：一项功能性神经影像研究
DOI：
10.1523/jneurosci.18-12-04697.1998
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
R. Dolan
中科院分区：
文献类型：
--
作者：
R. Elliott;R. Dolan
预先暴露受试者的视觉刺激足以建立随后的偏好，即使以前的曝光是潜意识的，这样的外显识别是偶然的。这种先前接触对偏好判断的影响，被称为“单纯接触效应”，是一种无意识记忆。目前的功能性神经影像学研究探讨了这种影响的机制。9名志愿者被试在对抽象刺激进行偏好或记忆的基础上进行强迫选择判断时，使用功能成像进行了研究。每一种判断类型都是在两种条件下做出的：在一种条件下，一种或另一种刺激是以前在阈下出现的，而在第二种条件下，两种刺激都是新的。记忆判断与左额极皮层和顶叶区的激活相关，而偏好判断与内侧前额叶皮层和枕叶皮层的激活相关。客观熟悉性（内隐记忆）对偏好的调节与右侧额叶激活有关。海马回的显着激活被认为是对客观刺激的新奇性，无论所需的判断类型。因此，我们的数据表明记忆系统的激活独立于回忆的经验。在这个系统中的分离激活牵连额极参与外显检索尝试和右侧前额叶皮层参与内隐记忆表达的偏好判断。此外，研究结果表明，海马对刺激新奇性的反应可以独立于熟悉性的有意识可报告性。
Preexposing subjects to visual stimuli is sufficient to establish a subsequent preference, even when previous exposure is subliminal, such that explicit recognition is at chance. This influence of previous exposure on preference judgments, known as the “mere exposure effect,” is a form of unconscious memory. The present functional neuroimaging study examines the mechanism of this effect. Nine volunteer subjects were studied using functional imaging while making forced choice judgments about abstract stimuli on the basis of either preference or memory. Each judgment type was made under two conditions: under one condition one or the other stimulus had previously been presented subliminally, whereas under the second condition both stimuli were novel. Memory judgments were associated with activation of left frontopolar cortex and parietal areas, whereas preference judgments were associated with activation of medial prefrontal cortex and regions of occipital cortex. The modulation of preference by objective familiarity (implicit memory) was associated with right lateral frontal activation. Significant activation of hippocampal gyrus was seen in response to objective stimulus novelty, regardless of judgment type required. Our data thus demonstrate activations of a memory system independent of recollective experience. Dissociable activations within this system implicate a frontopolar involvement in explicit retrieval attempt and right lateral prefrontal cortex involvement in implicit memory expressed in preference judgments. Furthermore, the results suggest that hippocampal response to stimulus novelty can be independent of conscious reportability of familiarity.
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影响因子：
56.9
作者：
Berns, GS;Cohen, JD;Mintun, MA
通讯作者：
Mintun, MA
影响因子：
56.9
作者：
Gabrieli, JDE;Brewer, JB;Glover, GH
通讯作者：
Glover, GH
DOI：
10.1073/pnas.93.1.321
发表时间：
1996-01-09
影响因子：
11.1
作者：
Schacter, DL;Alpert, NM;Albert, MS
通讯作者：
Albert, MS
DOI：
10.1073/pnas.93.16.8660
发表时间：
1996-08-06
影响因子：
11.1
作者：
Stern, CE;Corkin, S;Rosen, BR
通讯作者：
Rosen, BR
影响因子：
3.7
作者：
RAICHLE, ME;FIEZ, JA;PETERSEN, SE
通讯作者：
PETERSEN, SE