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- W2028684467 abstract "Slow wave sleep, hallmarked by the occurrence of slow oscillations (SO), plays an important role for the consolidation of hippocampus-dependent memories. Transcranial stimulation by weak electric currents oscillating at the endogenous SO frequency (SO-tDCS) during post-learning sleep was previously shown by us to boost SO activity and improve the consolidation of hippocampus-dependent memory in human subjects. Here, we aimed at replicating and extending these results to a rodent model. Rats were trained for 12 days at the beginning of their inactive phase in the reference memory version of the radial arm maze. In a between subjects design, animals received SO-tDCS over prefrontal cortex (PFC) or sham stimulation within a time frame of 1 h during subsequent non-rapid eye movement (NREM) sleep. Applied over multiple daily sessions SO-tDCS impacted cortical network activity as measured by EEG and behavior: at the EEG level, SO-tDCS enhanced post-stimulation upper delta (2-4 Hz) activity whereby the first stimulations of each day were preferentially affected. Furthermore, commencing on day 8, SO-tDCS acutely decreased theta activity indicating long-term effects on cortical networks. Behaviorally, working memory for baited maze arms was enhanced up to day 4, indicating enhanced consolidation of task-inherent rules, while reference memory errors did not differ between groups. Taken together, we could show here for the first time an effect of SO-tDCS during NREM sleep on cognitive functions and on cortical activity in a rodent model." @default.
- W2028684467 created "2016-06-24" @default.
- W2028684467 creator A5036040037 @default.
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- W2028684467 date "2014-01-01" @default.
- W2028684467 modified "2023-09-23" @default.
- W2028684467 title "Transcranial slow oscillation stimulation during NREM sleep enhances acquisition of the radial maze task and modulates cortical network activity in rats" @default.
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- W2028684467 doi "https://doi.org/10.3389/fnbeh.2013.00220" @default.
- W2028684467 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3884143" @default.
- W2028684467 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24409131" @default.
- W2028684467 hasPublicationYear "2014" @default.
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