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  Individual alpha frequency modulates sleep-related emotional memory consolidation

Cross, Z. R., Santamaria, A., Corcoran, A. W., Chatburn, A., Alday, P. M., Coussens, S., et al. (2020). Individual alpha frequency modulates sleep-related emotional memory consolidation. Neuropsychologia, 148: 107660. doi:10.1016/j.neuropsychologia.2020.107660.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-431A-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-5039-F
Genre: Journal Article

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Cross, Zachariah R.1, Author
Santamaria, Amanda1, Author
Corcoran, Andrew W.1, 2, Author
Chatburn, Alex1, Author
Alday, Phillip M.3, Author              
Coussens, Scott1, Author
Kohler, Mark J.4, Author
Affiliations:
1University of South Australia, Adelaide, Australia, ou_persistent22              
2Monash University, Melbourne, Australia, ou_persistent22              
3Psychology of Language Department, MPI for Psycholinguistics, Max Planck Society, ou_792545              
4Adelaide University, Adelaide, Australia, ou_persistent22              

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 Abstract: Alpha-band oscillatory activity is involved in modulating memory and attention. However, few studies have investigated individual differences in oscillatory activity during the encoding of emotional memory, particularly in sleep paradigms where sleep is thought to play an active role in memory consolidation. The current study aimed to address the question of whether individual alpha frequency (IAF) modulates the consolidation of declarative memory across periods of sleep and wake. 22 participants aged 18 – 41 years (mean age = 25.77) viewed 120 emotionally valenced images (positive, negative, neutral) and completed a baseline memory task before a 2hr afternoon sleep opportunity and an equivalent period of wake. Following the sleep and wake conditions, participants were required to distinguish between 120 learned (target) images and 120 new (distractor) images. This method allowed us to delineate the role of different oscillatory components of sleep and wake states in the emotional modulation of memory. Linear mixed-effects models revealed interactions between IAF, rapid eye movement sleep theta power, and slow-wave sleep slow oscillatory density on memory outcomes. These results highlight the importance of individual factors in the EEG in modulating oscillatory-related memory consolidation and subsequent behavioural outcomes and test predictions proposed by models of sleep-based memory consolidation.

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Language(s): eng - English
 Dates: 2020-10-172020-10
 Publication Status: Published in print
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 Rev. Type: Peer
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Title: Neuropsychologia
Source Genre: Journal
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Pages: - Volume / Issue: 148 Sequence Number: 107660 Start / End Page: - Identifier: ISSN: 0028-3932
CoNE: https://pure.mpg.de/cone/journals/resource/954925428258