Frequency-resolved connectome alterations in major depressive disorder: A multisite resting fMRI study
- PMID: 36781144
- DOI: 10.1016/j.jad.2023.01.104
Frequency-resolved connectome alterations in major depressive disorder: A multisite resting fMRI study
Abstract
Background: Functional connectome studies have revealed widespread connectivity alterations in major depressive disorder (MDD). However, the low frequency bandpass filtering (0.01-0.08 Hz or 0.01-0.1 Hz) in most studies have impeded our understanding on whether and how these alterations are affected by frequency of interest.
Methods: Here, we performed frequency-resolved (0.01-0.06 Hz, 0.06-0.16 Hz and 0.16-0.24 Hz) connectome analyses using a large-sample resting-state functional MRI dataset of 1002 MDD patients and 924 healthy controls from seven independent centers.
Results: We reported significant frequency-dependent connectome alterations in MDD in left inferior parietal, inferior temporal, precentral, and fusiform cortices and bilateral precuneus. These frequency-dependent connectome alterations are mainly derived by abnormalities of medium- and long-distance connections and are brain network-dependent. Moreover, the connectome alteration of left precuneus in high frequency band (0.16-0.24 Hz) is significantly associated with illness duration.
Limitations: Multisite harmonization model only removed linear site effects. Neurobiological underpinning of alterations in higher frequency (0.16-0.24 Hz) should be further examined by combining fMRI data with respiration, heartbeat and blood flow recordings in future studies.
Conclusions: These results highlight the frequency-dependency of connectome alterations in MDD and the benefit of examining connectome alteration in MDD under a wider frequency band.
Keywords: Frequency; Functional connectivity strength; Major depressive disorder; Resting-state functional magnetic resonance imaging.
Copyright © 2023. Published by Elsevier B.V.
Conflict of interest statement
Conflict of interest The authors and all members of DIDA-MDD Working Group report no biomedical financial interests or potential conflicts of interest.
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