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Article

Sleep-Related Declarative Memory Consolidation in Children and Adolescents with Developmental Dyslexia

1
Department of Psychology, Sapienza University of Rome, 00185 Rome, Italy
2
Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy
3
IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
4
Child and Adolescent Psychiatry Unit, IRCCS Bambino Gesù Children’s Hospital, 00165 Rome, Italy
5
Department of Life Science and Public Health, Catholic University of the Sacred Heart, 00153 Rome, Italy
6
Department of Education and Human Sciences, University of Modena and Reggio Emilia, 42121 Reggio Emilia, Italy
*
Author to whom correspondence should be addressed.
Brain Sci. 2021, 11(1), 73; https://doi.org/10.3390/brainsci11010073
Received: 10 December 2020 / Revised: 31 December 2020 / Accepted: 4 January 2021 / Published: 8 January 2021
(This article belongs to the Special Issue Multiple Neurocognitive Deficits and Dyslexia)
Sleep has a crucial role in memory processes, and maturational changes in sleep electrophysiology are involved in cognitive development. Albeit both sleep and memory alterations have been observed in Developmental Dyslexia (DD), their relation in this population has been scarcely investigated, particularly concerning topographical aspects. The study aimed to compare sleep topography and associated sleep-related declarative memory consolidation in participants with DD and normal readers (NR). Eleven participants with DD and 18 NR (9–14 years old) underwent a whole-night polysomnography. They were administered a word pair task before and after sleep to assess for declarative memory consolidation. Memory performance and sleep features (macro and microstructural) were compared between the groups, and the intercorrelations between consolidation rate and sleep measures were assessed. DD showed a deeper worsening in memory after sleep compared to NR and reduced slow spindles in occipito-parietal and left fronto-central areas. Our results suggest specific alterations in local sleep EEG (i.e., sleep spindles) and in sleep-dependent memory consolidation processes in DD. We highlight the importance of a topographical approach, which might shed light on potential alteration in regional cortical oscillation dynamics in DD. The latter might represent a target for therapeutic interventions aimed at enhancing cognitive functioning in DD. View Full-Text
Keywords: developmental dyslexia; neurodevelopmental disorders; Non-Rapid Eye Movement (NREM) sleep; memory consolidation; sleep spindles; sleep oscillations; learning disabilities; predictive neurocognitive factors; Slow Wave Activity; EEG topography developmental dyslexia; neurodevelopmental disorders; Non-Rapid Eye Movement (NREM) sleep; memory consolidation; sleep spindles; sleep oscillations; learning disabilities; predictive neurocognitive factors; Slow Wave Activity; EEG topography
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MDPI and ACS Style

Reda, F.; Gorgoni, M.; D'Atri, A.; Scarpelli, S.; Carpi, M.; Di Cola, E.; Menghini, D.; Vicari, S.; Stella, G.; De Gennaro, L. Sleep-Related Declarative Memory Consolidation in Children and Adolescents with Developmental Dyslexia. Brain Sci. 2021, 11, 73. https://doi.org/10.3390/brainsci11010073

AMA Style

Reda F, Gorgoni M, D'Atri A, Scarpelli S, Carpi M, Di Cola E, Menghini D, Vicari S, Stella G, De Gennaro L. Sleep-Related Declarative Memory Consolidation in Children and Adolescents with Developmental Dyslexia. Brain Sciences. 2021; 11(1):73. https://doi.org/10.3390/brainsci11010073

Chicago/Turabian Style

Reda, Flaminia, Maurizio Gorgoni, Aurora D'Atri, Serena Scarpelli, Matteo Carpi, Erica Di Cola, Deny Menghini, Stefano Vicari, Giacomo Stella, and Luigi De Gennaro. 2021. "Sleep-Related Declarative Memory Consolidation in Children and Adolescents with Developmental Dyslexia" Brain Sciences 11, no. 1: 73. https://doi.org/10.3390/brainsci11010073

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