首页> 外文期刊>Cognitive, affective & behavioral neuroscience >rTMS stimulation on left DLPFC increases the correct recognition of memories for emotional target and distractor words.
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rTMS stimulation on left DLPFC increases the correct recognition of memories for emotional target and distractor words.

机译:左DLPFC上的rTMS刺激可增强对情感目标词和干扰词的记忆的正确识别。

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According to a recent hypothesis, the prefrontal cortex has been proposed as the site of emotional memory integration, because it is sensitive to the recognition of emotional contents. In the present research, we explored the role of the dorsolateral prefrontal cortex (DLPFC) in memory recognition processes for positive versus negative emotional stimuli when old (target) and new (distractor, either semantically related or unrelated to the target) stimuli were presented. The role of the DLPFC was analysed using an rTMS (repeated transcranial magnetic stimulation) paradigm that induced increased cortical activation of the left DLPFC. The subjects were required to perform a task that consisted of two experimental phases (i.e., an encoding and a recognition phase) in which the targets and the distractors were presented and recognition performance was measured. rTMS stimulation was provided over the left DLPFC during the recognition phase. We found that the rTMS stimulation affected the memory recognition of positive emotional material. Moreover, related and unrelated distractors were discarded better when they were positively valenced, and a more significant effect (i.e., increased performance) was produced in response to related distractors. This result suggests that the activation of the left DLPFC favours the memory recognition of positive emotional information, and that such activation is able to induce a more appropriate selective process to distinguish target from distractor stimuli in the presence of more complex processes (related distractors). The valence model of emotional cue processing may explain this increased performance by demonstrating the distinct role of the left hemisphere in the retrieval of positive emotional information.
机译:根据最近的假设,前额叶皮层被提议作为情绪记忆整合的场所,因为它对情绪内容的识别敏感。在本研究中,我们探讨了在提出旧的(目标)和新的(干扰物,无论是语义上相关的还是与目标无关的)刺激时,正面和负面情绪刺激的背外侧前额叶皮质(DLPFC)在记忆识别过程中的作用。 DLPFC的作用是使用rTMS(重复经颅磁刺激)范例进行分析的,该范例诱导了左DLPFC皮质激活的增加。要求受试者执行由两个实验阶段(即,编码和识别阶段)组成的任务,其中呈现目标和干扰物并测量识别性能。在识别阶段,在左侧DLPFC上提供了rTMS刺激。我们发现,rTMS刺激影响了积极情绪材料的记忆识别。而且,当相关和无关的干扰物呈正价时,它们会被更好地丢弃,并且对相关干扰物的反应产生了更显着的效果(即,性能提高)。该结果表明,左DLPFC的激活有利于对积极情绪信息的记忆识别,并且这种激活能够在存在更复杂过程(相关干扰物)的情况下诱导更适当的选择性过程,以将目标与干扰物刺激区分开。情绪提示处理的化合价模型可以通过证明左半球在积极的情绪信息检索中的独特作用来解释这种提高的表现。

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