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Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
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Strong correspondence between prefrontal and visual representations during emotional perception.

Doyoung Park1, Taehyun Kim1, Sue-Hyun Lee1,2

  • 1Department of Bio and Brain Engineering, College of Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.

Human Brain Mapping
|January 26, 2021
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Summary

Emotional experiences modulate memory by altering sensory processing in the brain. The prefrontal cortex influences visual cortex representations, enhancing memory for emotional details.

Keywords:
emotional memoryemotional perceptionfMRIprefrontal cortexsensory representationsvisual cortex

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neuroimaging

Background:

  • Emotional experiences impact memory, but the neural mechanisms of this modulation are not fully understood.
  • Previous research suggests emotional memory involves complex alterations rather than simple enhancement.

Purpose of the Study:

  • To investigate how the prefrontal cortex influences sensory representations during emotional experiences.
  • To explore the neural basis for the detailed modulation of emotional memory contents.

Main Methods:

  • Utilized functional magnetic resonance imaging (fMRI) to examine brain activity.
  • Compared neural representations in the visual cortex and prefrontal cortex during emotional and neutral picture perception.

Main Results:

  • A significant correspondence was found between representations in the primary visual cortex (V1) and dorsolateral prefrontal cortex (dlPFC) for emotional pictures, but not neutral ones.
  • Greater correspondence between visual and prefrontal representations correlated with better recall of high-level semantic, but not low-level visual, aspects of emotional stimuli.

Conclusions:

  • Prefrontal cortex activity directly influences sensory representations during emotional experiences.
  • This top-down modulation by the prefrontal cortex shapes how emotional information is encoded and remembered.