EEG alpha reactivity on eyes opening discriminates patients with schizophrenia and schizoaffective disorder

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023752%3A_____%2F24%3A43921363" target="_blank" >RIV/00023752:_____/24:43921363 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11120/24:43926886

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S1388245724000671" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S1388245724000671</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clinph.2024.03.003" target="_blank" >10.1016/j.clinph.2024.03.003</a>

Result language

angličtina

Original language name

EEG alpha reactivity on eyes opening discriminates patients with schizophrenia and schizoaffective disorder

Original language description

Objective: Alpha activity in the electroencephalogram (EEG) is typically dominant during rest with closed eyes but suppressed by visual stimulation. Previous research has shown that alpha-blockade is less pronounced in schizophrenia patients compared to healthy individuals, but no studies have examined it in schizoaffective disorder. Methods: A resting state EEG was used for the analysis of the alpha-reactivity between the eyes closed and the eyes opened conditions in overall (8 – 13 Hz), low (8 – 10 Hz) and high (10 – 13 Hz) alpha bands in three groups: schizophrenia patients (SC, n = 30), schizoaffective disorder (SA, n = 30), and healthy controls (HC, n = 36). All patients had their first psychotic episode and were receiving antipsychotic therapy. Results: A significant decrease in alpha power was noted across all subjects from the eyes-closed to eyes-open condition, spanning all regions. Alpha reactivity over the posterior regions was lower in SC compared to HC within overall and high alpha. SA showed a trend towards reduced alpha reactivity compared to HC, especially evident over the left posterior region within the overall alpha. Alpha reactivity was more pronounced over the middle and right posterior regions of SA as compared to SC, particularly in the high alpha. Alpha reactivity in SC and SA patients was associated with various negative symptoms. Conclusions: Our findings imply distinct alterations in arousal mechanisms in SC and SA and their relation to negative symptomatology. Arousal is more preserved in SA. Significance: This study is the first to compare the EEG features of arousal in SC and SA.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30103 - Neurosciences (including psychophysiology)

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Clinical Neurophysiology

ISSN

1388-2457

e-ISSN

1872-8952

Volume of the periodical

161

Issue of the periodical within the volume

May

Country of publishing house

IE - IRELAND

Number of pages

11

Pages from-to

211-221

UT code for WoS article

001218437500001

EID of the result in the Scopus database

2-s2.0-85188665184