Forgotten but not gone: FMRI evidence of implicit memory for negative stimuli 24 hours after the initial study episode.

ABSTRACT: Endel Tulving conducted pioneering work on the explicit and implicit memory systems and demonstrated that priming effects can be long-lasting. It is also well-established that emotion can amplify explicit and implicit memory. Prior work has utilized repetition suppression (RS) of the fMRI-BOLD signal-a reduction in the magnitude of activity over repeated presentations of stimuli-to index implicit memory. Using an explicit recognition memory paradigm, we examined emotional modulation of long-term implicit memory effects as revealed by repetition suppression (i.e., comparing second-exposure forgotten items to first-exposure correct rejections). Forty-seven participants incidentally encoded line-drawings of negative, positive, and neutral scenes followed by the full color image. Twenty-four h

SUBMITTER: Kark SM 

PROVIDER: S-EPMC7012535 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature