Department of Bio and Brain Engineering, College of Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
Program of Brain and Cognitive Engineering, College of Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
Hum Brain Mapp. 2021 May;42(7):2115-2127. doi: 10.1002/hbm.25353. Epub 2021 Jan 26.
Emotion is thought to cause focal enhancement or distortion of certain components of memory, indicating a complex property of emotional modulation on memory rather than simple enhancement. However, the neural basis for detailed modulation of emotional memory contents has remained unclear. Here has been shown that the information processing of the prefrontal cortex differentially affects sensory representations during experience of emotional information compared with neutral information, using functional magnetic resonance imaging (fMRI). It was found that during perception of emotional pictures, information representation in primary visual cortex (V1) significantly corresponded with the representations in dorsolateral prefrontal cortex (dlPFC). This correspondence was not observed for neutral pictures. Furthermore, participants with greater correspondence between visual and prefrontal representations showed better memory for high-level semantic components but not for low-level visual components of emotional stimuli. These results suggest that sensory representation during experience of emotional stimuli, compared with neutral stimuli, is more directly influenced by internally generated higher-order information from the prefrontal cortex.
情绪被认为会导致记忆中某些成分的焦点增强或扭曲，这表明情绪对记忆的调节具有复杂的特性，而不仅仅是简单的增强。然而，情绪记忆内容的详细调节的神经基础仍不清楚。本研究使用功能磁共振成像（fMRI）表明，与中性信息相比，前额叶皮层的信息处理在体验情绪信息时会对感觉表现产生不同的影响。研究发现，在感知情绪图片时，初级视觉皮层（V1）的信息表现与背外侧前额叶皮层（dlPFC）的表现显著相关。对于中性图片，没有观察到这种对应关系。此外，在视觉和前额叶表现之间具有更大对应关系的参与者对情绪刺激的高级语义成分的记忆更好，而对低水平视觉成分的记忆则没有那么好。这些结果表明，与中性刺激相比，情绪刺激体验期间的感觉表现受到来自前额叶的内部产生的更高阶信息的更直接影响。
