Hemispheric processing of memory is affected by sleep

Monaghan, Padraic John and Shaw, John J. and Ashworth-Lord, Anneliese and Newbury, Chloe (2017) Hemispheric processing of memory is affected by sleep. Brain and Language, 167. pp. 36-43. ISSN 0093-934X

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Sleep is known to affect learning and memory, but the extent to which it influences behavioural processing in the left and right hemispheres of the brain is as yet unknown. We tested two hypotheses about lateralised effects of sleep on recognition memory for words: whether sleep reactivated recent experiences of words promoting access to the long-term store in the left hemisphere (LH), and whether sleep enhanced spreading activation differentially in semantic networks in the hemispheres. In Experiment 1, participants viewed lists of semantically related words, then slept or stayed awake for 12 h before being tested on seen, unseen but related, or unrelated words presented to the left or the right hemisphere. Sleep was found to promote word recognition in the LH, and to spread activation equally within semantic networks in both hemispheres. Experiment 2 ensured that the results were not due to time of day effects influencing cognitive performance.

Item Type:
Journal Article
Journal or Publication Title:
Brain and Language
Additional Information:
This is the author’s version of a work that was accepted for publication in Brain and Language. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Brain and Language, 167, 2017 DOI: 10.1016/j.bandl.2016.05.003
Uncontrolled Keywords:
?? sleephemispheric lateralizationmemory consolidationfalse memoryspreading activationlinguistics and languageexperimental and cognitive psychologycognitive neurosciencespeech and hearing ??
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Deposited On:
14 Oct 2016 15:58
Last Modified:
03 Jan 2024 00:19