Academic Journal
Aberrant associations between neuronal resting-state fluctuations and working memory-induced activity in major depressive disorder
| Τίτλος: | Aberrant associations between neuronal resting-state fluctuations and working memory-induced activity in major depressive disorder |
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| Συγγραφείς: | Moritz Hempel, Thorsten Barnhofer, Ann-Kathrin Domke, Corinna Hartling, Anna Stippl, Luisa Carstens, Matti Gärtner, Simone Grimm |
| Πηγή: | Mol Psychiatry |
| Στοιχεία εκδότη: | Springer Science and Business Media LLC, 2024. |
| Έτος έκδοσης: | 2024 |
| Θεματικοί όροι: | Male, Adult, Neurons, 0301 basic medicine, Depressive Disorder, Major, Brain Mapping, Rest, Brain, Prefrontal Cortex, Default Mode Network, Middle Aged, Magnetic Resonance Imaging, Gyrus Cinguli, Article, 3. Good health, Young Adult, 03 medical and health sciences, Memory, Short-Term, 0302 clinical medicine, Humans, Female, Nerve Net, Nerve Net/physiopathology [MeSH], Gyrus Cinguli/diagnostic imaging [MeSH], 692/53/2421, 59/36, Depressive Disorder, Major/physiopathology [MeSH], Male [MeSH], Nerve Net/diagnostic imaging [MeSH], Brain Mapping/methods [MeSH], Female [MeSH], Memory, Short-Term/physiology [MeSH], Adult [MeSH], Humans [MeSH], Neurons/metabolism [MeSH], Rest/physiology [MeSH], Middle Aged [MeSH], 692/699/476/1414, Brain/physiopathology [MeSH], Default Mode Network/physiopathology [MeSH], Prefrontal Cortex/physiopathology [MeSH], Young Adult [MeSH], Magnetic Resonance Imaging/methods [MeSH], Gyrus Cinguli/physiopathology [MeSH], 631/378, article |
| Περιγραφή: | Previous investigations have revealed performance deficits and altered neural processes during working-memory (WM) tasks in major depressive disorder (MDD). While most of these studies used task-based functional magnetic resonance imaging (fMRI), there is an increasing interest in resting-state fMRI to characterize aberrant network dynamics involved in this and other MDD-associated symptoms. It has been proposed that activity during the resting-state represents characteristics of brain-wide functional organization, which could be highly relevant for the efficient execution of cognitive tasks. However, the dynamics linking resting-state properties and task-evoked activity remain poorly understood. Therefore, the present study investigated the association between spontaneous activity as indicated by the amplitude of low frequency fluctuations (ALFF) at rest and activity during an emotional n-back task. 60 patients diagnosed with an acute MDD episode, and 52 healthy controls underwent the fMRI scanning procedure. Within both groups, positive correlations between spontaneous activity at rest and task-activation were found in core regions of the central-executive network (CEN), whereas spontaneous activity correlated negatively with task-deactivation in regions of the default mode network (DMN). Compared to healthy controls, patients showed a decreased rest-task correlation in the left prefrontal cortex (CEN) and an increased negative correlation in the precuneus/posterior cingulate cortex (DMN). Interestingly, no significant group-differences within those regions were found solely at rest or during the task. The results underpin the potential value and importance of resting-state markers for the understanding of dysfunctional network dynamics and neural substrates of cognitive processing. |
| Τύπος εγγράφου: | Article Other literature type |
| Γλώσσα: | English |
| ISSN: | 1476-5578 1359-4184 |
| DOI: | 10.1038/s41380-024-02647-w |
| Σύνδεσμος πρόσβασης: | https://pubmed.ncbi.nlm.nih.gov/38951625 https://repository.publisso.de/resource/frl:6499911 |
| Rights: | CC BY |
| Αριθμός Καταχώρησης: | edsair.doi.dedup.....b3eab83854f2f16cac21be5830bc5843 |
| Βάση Δεδομένων: | OpenAIRE |
| ISSN: | 14765578 13594184 |
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| DOI: | 10.1038/s41380-024-02647-w |