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000859215 1001_ $$0P:(DE-Juel1)165844$$aRisius, Okka$$b0
000859215 245__ $$aNeural Network Connectivity During Post-encoding Rest: Linking Episodic Memory Encoding and Retrieval
000859215 260__ $$aLausanne$$bFrontiers Research Foundation$$c2019
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000859215 520__ $$aCommonly, a switch between networks mediating memory encoding and those mediating retrieval is observed. This may not only be due to differential involvement of neural resources due to distinct cognitive processes but could also reflect the formation of new memory traces and their dynamic change during consolidation. We used resting state fMRI to measure functional connectivity (FC) changes during post-encoding rest, hypothesizing that during this phase, new functional connections between encoding- and retrieval-related regions are created. Interfering and reminding tasks served as experimental modulators to corroborate that the observed FC differences indeed reflect changes specific to post-encoding rest. The right inferior occipital and fusiform gyri (active during encoding) showed increased FC with the left inferior frontal gyrus and the left middle temporal gyrus (MTG) during post-encoding rest. Importantly, the left MTG subsequently also mediated successful retrieval. This finding might reflect the formation of functional connections between encoding- and retrieval-related regions during undisturbed post-encoding rest. These connections were vulnerable to experimental modulation: Cognitive interference disrupted FC changes during post-encoding rest resulting in poorer memory performance. The presentation of reminders also inhibited FC increases but without affecting memory performance. Our results contribute to a better understanding of the mechanisms by which post-encoding rest bridges the gap between encoding- and retrieval-related networks.
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000859215 7001_ $$0P:(DE-HGF)0$$aOnur, Oezguer A.$$b1
000859215 7001_ $$0P:(DE-Juel1)162382$$aDronse, Julian$$b2
000859215 7001_ $$0P:(DE-Juel1)156372$$avon Reutern, Boris$$b3
000859215 7001_ $$0P:(DE-Juel1)167565$$aRichter, Nils$$b4$$ufzj
000859215 7001_ $$0P:(DE-Juel1)131720$$aFink, Gereon R.$$b5$$ufzj
000859215 7001_ $$0P:(DE-Juel1)131730$$aKukolja, Juraj$$b6$$eCorresponding author$$ufzj
000859215 773__ $$0PERI:(DE-600)2425477-0$$a10.3389/fnhum.2018.00528$$gVol. 12, p. 528$$p528$$tFrontiers in human neuroscience$$v12$$x1662-5161$$y2019
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