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Recruitment dynamics of cognitive control in insomnia

Muscarella, Charlotte and Mairesse, Olivier and Hughes, Gethin and Neu, Daniel and Van den Bussche, Eva (2019) 'Recruitment dynamics of cognitive control in insomnia.' Sleep. ISSN 0161-8105

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Abstract

Study Objectives Individuals with insomnia disorder (ID) commonly report complaints of cognitive control functioning. Conversely, both behavioral and neurological evidence supporting subjective cognitive control impairments in insomnia remain remarkably scarce and inconclusive. To investigate this discrepancy, the present study used next to behavioral measures, event-related potentials (ERPs) to assess proactive control and reactive control in insomnia. Methods Individuals with insomnia disorder (n = 18) and good sleeper controls (GSC; n = 15) completed the AX-Continuous Performance Task, while electroencephalography (EEG) was recorded. This task required participants to maintain specific cue-information active in order to prepare an adequate response to a subsequent probe, which allowed us to measure participants’ reliance on both proactive and reactive control. Results The results indicate that, although ID show a comparable level of performance as GSC, they show a reduced proactive engagement of cue-induced maintenance and response preparation processes (as reflected by the P3b and the contingent negative variation components). Moreover, in contrast to GSC, ID fail to engage reactive control (as indexed by the P3a component) in order to overcome invalid response tendencies. Conclusions This study provides neurological evidence for impairments in cognitive control functioning in insomnia. As such, our study contributes to a better understanding of the discrepancy between the commonly reported cognitive impairments in insomnia and the scarce objective evidence supporting these cognitive complaints.

Item Type: Article
Uncontrolled Keywords: insomnia, sleep, cognitive control, EEG, AX-CPT
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculty of Science and Health > Psychology, Department of
Depositing User: Elements
Date Deposited: 08 Mar 2019 14:56
Last Modified: 08 Mar 2019 15:15
URI: http://repository.essex.ac.uk/id/eprint/24167

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