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- W4223454328 endingPage "119205" @default.
- W4223454328 startingPage "119205" @default.
- W4223454328 abstract "Mnemonic representations vary in fidelity, sharpness, and strength-qualities that can be examined using both introspective judgements of mental states and objective measures of brain activity. Subjective and objective measures are both valid ways of reading out the content of someone's internal mnemonic states, each with different strengths and weaknesses. St-Laurent and colleagues (2015) compared the neural correlates of memory vividness ratings with patterns of neural reactivation evoked during memory recall and found considerable overlap between the two, suggesting a common neural basis underlying these different markers of representational quality. Here we extended this work with meta-analytic methods by pooling together four neuroimaging datasets in order to contrast the neural substrates of neural reactivation and those of vividness judgements. While reactivation and vividness judgements correlated positively with one another and were associated with common univariate activity in the dorsal attention network and anterior hippocampus, some notable differences were also observed. Vividness judgments were tied to stronger activation in the striatum and dorsal attention network, together with activity suppression in default mode network nodes. We also observed a trend for reactivation to be more closely associated with early visual cortex activity. A mediation analysis found support for the hypothesis that neural reactivation is necessary for memory vividness, with activity in the anterior hippocampus associated with greater reactivation. Our results suggest that neural reactivation and vividness judgements reflect common mnemonic processes but differ in the extent to which they engage effortful, attentional processes. Additionally, the similarity between reactivation and vividness appears to arise, partly, through hippocampal engagement during memory retrieval." @default.
- W4223454328 created "2022-04-14" @default.
- W4223454328 creator A5008657408 @default.
- W4223454328 creator A5055504859 @default.
- W4223454328 creator A5067632936 @default.
- W4223454328 date "2022-07-01" @default.
- W4223454328 modified "2023-10-18" @default.
- W4223454328 title "Neural Reactivation and Judgements of Vividness Reveal Separable Contributions to Mnemonic Representation" @default.
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