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Clin Neurophysiol . High-density EEG sleep correlates of cognitive and affective impairment at 12-month follow-up after COVID-19

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  • Clin Neurophysiol . High-density EEG sleep correlates of cognitive and affective impairment at 12-month follow-up after COVID-19


    Clin Neurophysiol


    . 2022 Jun 15;140:126-135.
    doi: 10.1016/j.clinph.2022.05.017. Online ahead of print.
    High-density EEG sleep correlates of cognitive and affective impairment at 12-month follow-up after COVID-19


    Maria Rubega 1 , Luciana Ciringione 2 , Margherita Bertuccelli 3 , Matilde Paramento 4 , Giovanni Sparacino 5 , Andrea Vianello 6 , Stefano Masiero 7 , Antonino Vallesi 8 , Emanuela Formaggio 9 , Alessandra Del Felice 10



    Affiliations

    Abstract

    Objective: To disentangle the pathophysiology of cognitive/affective impairment in Coronavirus Disease-2019 (COVID-19), we studied long-term cognitive and affective sequelae and sleep high-density electroencephalography (EEG) at 12-month follow-up in people with a previous hospital admission for acute COVID-19.
    Methods: People discharged from an intensive care unit (ICU) and a sub-intensive ward (nonICU) between March and May 2020 were contacted between March and June 2021. Participants underwent cognitive, psychological, and sleep assessment. High-density EEG recording was acquired during a nap. Slow and fast spindles density/amplitude/frequency and source reconstruction in brain gray matter were extracted. The relationship between psychological and cognitive findings was explored with Pearson correlation.
    Results: We enrolled 33 participants ( 17 nonICU) and 12 controls. We observed a lower Physical Quality of Life index, higher post-traumatic stress disorder (PTSD) score, and a worse executive function performance in nonICU participants. Higher PTSD and Beck Depression Inventory scores correlated with lower executive performance. The same group showed a reorganization of spindle cortical generators.
    Conclusions: Our results show executive and psycho-affective deficits and spindle alterations in COVID-19 survivors - especially in nonICU participants - after 12 months from discharge.
    Significance: These findings may be suggestive of a crucial contribution of stress experienced during hospital admission on long-term cognitive functioning.

    Keywords: Electroencephalography; Nap; Neuropsychological assessment; long COVID-19.


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