Shared Neural Substrates of Emotionally Enhanced Perceptual and Mnemonic Vividness

Todd, Rebecca M. and Schmitz, Taylor W. and Susskind, Josh and Anderson, Adam K. (2013) Shared Neural Substrates of Emotionally Enhanced Perceptual and Mnemonic Vividness. Frontiers in Behavioral Neuroscience, 7. ISSN 1662-5153

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Abstract

It is well-known that emotionally salient events are remembered more vividly than mundane ones. Our recent research has demonstrated that such memory vividness (Mviv) is due in part to the subjective experience of emotional events as more perceptually vivid, an effect we call emotionally enhanced vividness (EEV). The present study built on previously reported research in which fMRI data were collected while participants rated relative levels of visual noise overlaid on emotionally salient and neutral images. Ratings of greater EEV were associated with greater activation in the amygdala and visual cortex. In the present study, we measured BOLD activation that predicted recognition Mviv for these same images 1 week later. Results showed that, after controlling for differences between scenes in low-level objective features, hippocampus activation uniquely predicted subsequent Mviv. In contrast, amygdala and visual cortex regions that were sensitive to EEV were also modulated by subsequent ratings of Mviv. These findings suggest shared neural substrates for the influence of emotional salience on perceptual and mnemonic vividness, with amygdala and visual cortex activation at encoding contributing to the experience of both perception and subsequent memory.

Item Type: Article
Subjects: GO for STM > Biological Science
Depositing User: Unnamed user with email support@goforstm.com
Date Deposited: 18 Mar 2023 09:07
Last Modified: 15 Feb 2024 03:54
URI: http://archive.article4submit.com/id/eprint/356

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