No evidence from a negative mood induction fMRI task for frontal functional asymmetry as a suitable neurofeedback target

• Verfasst von: Zhang, Jingying [VerfasserIn]
• Verfasst von: Zamoscik, Vera [VerfasserIn]
• Verfasst von: Kirsch, Peter [VerfasserIn]
• Verfasst von: Gerchen, Martin Fungisai [VerfasserIn]
• Titel: No evidence from a negative mood induction fMRI task for frontal functional asymmetry as a suitable neurofeedback target
• Verf.angabe: Jingying Zhang, Vera Eva Zamoscik, Peter Kirsch & Martin Fungisai Gerchen
• E-Jahr: 2023
• Jahr: 16 October 2023
• Umfang: 14 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 06.05.2024
• Titel Quelle: Enthalten in: Scientific reports
• Ort Quelle: [London] : Springer Nature, 2011
• Jahr Quelle: 2023
• Band/Heft Quelle: 13(2023), Artikel-ID 17557, Seite 1-14
• ISSN Quelle: 2045-2322
• DOI: doi:10.1038/s41598-023-44694-3
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Magnetic resonance imaging
• Sach-SW: Medical research
• Sach-SW: Psychology
• K10plus-PPN: 188786069X

Abstract

Frontal functional asymmetry (FA) has been proposed as a potential target for neurofeedback (NFB) training for mental disorders but most FA NFB studies used electroencephalography while the investigations of FA NFB in functional magnetic resonance imaging (fMRI) are rather limited. In this study, we aimed at identifying functional asymmetry effects in fMRI and exploring its potential as a target for fMRI NFB studies by re-analyzing an existing data set containing a resting state measurement and a sad mood induction task of n = 30 participants with remitted major depressive disorder and n = 30 matched healthy controls. We applied low-frequency fluctuations (ALFF), fractional ALFF, and regional homogeneity and estimated functional asymmetry in both a voxel-wise and regional manner. We assessed functional asymmetry during rest and negative mood induction as well as functional asymmetry changes between the phases, and associated the induced mood change with the change in functional asymmetry. Analyses were conducted within as well as between groups. Despite extensive analyses, we identified only very limited effects. While some tests showed nominal significance, our results did not contain any clear identifiable patterns of effects that would be expected if a true underlying effect would be present. In conclusion, we do not find evidence for FA effects related to negative mood in fMRI, which questions the usefulness of FA measures for real-time fMRI neurofeedback as a treatment approach for affective disorders.