Skip to main content
Top
Published in: Brain Structure and Function 3/2022

Open Access 01-04-2022 | Original Article

An integrated TMS-EEG and MRI approach to explore the interregional connectivity of the default mode network

Authors: Romina Esposito, Marta Bortoletto, Domenico Zacà, Paolo Avesani, Carlo Miniussi

Published in: Brain Structure and Function | Issue 3/2022

Login to get access

Abstract

Explorations of the relation between brain anatomy and functional connections in the brain are crucial for shedding more light on network connectivity that sustains brain communication. In this study, by means of an integrative approach, we examined both the structural and functional connections of the default mode network (DMN) in a group of sixteen healthy subjects. For each subject, the DMN was extracted from the structural and functional resonance imaging data; the areas that were part of the DMN were defined as the regions of interest. Then, the target network was structurally explored by diffusion-weighted imaging, tested by neurophysiological means, and retested by means of concurrent transcranial magnetic stimulation and electroencephalography (TMS-EEG). A series of correlational analyses were performed to explore the relationship between the amplitude of early-latency TMS-evoked potentials and the indexes of structural connectivity (weighted number of fibres and fractional anisotropy). Stimulation of the left or right parietal nodes of the DMN-induced activation in the contralateral parietal and frontocentral electrodes within 60 ms; this activation correlated with fractional anisotropy measures of the corpus callosum. These results showed that distant secondary activations after target stimulation can be predicted based on the target’s anatomical connections. Interestingly, structural features of the corpus callosum predicted the activation of the directly connected nodes, i.e., parietal-parietal nodes, and of the broader DMN network, i.e., parietal-frontal nodes, as identified with functional magnetic resonance imaging. Our results suggested that the proposed integrated approach would allow us to describe the contributory causal relationship between structural connectivity and functional connectivity of the DMN.
Appendix
Available only for authorised users
Literature
go back to reference Boorman ED, O’Shea J, Sebastian C, Rushworth MF, Johansen-Berg H (2007) Individual differences in white-matter microstructure reflect variation in functional connectivity during choice. Curr Biol 17(16):1426–1431CrossRefPubMed Boorman ED, O’Shea J, Sebastian C, Rushworth MF, Johansen-Berg H (2007) Individual differences in white-matter microstructure reflect variation in functional connectivity during choice. Curr Biol 17(16):1426–1431CrossRefPubMed
go back to reference Momi D, Ozdemir RA, Tadayon E, Boucher P, Shafi MM, Pascual-Leone A, Santarnecchi E (2021) Network-level macroscale structural connectivity predicts propagation of transcranial magnetic stimulation. Neuroimage 229:117698CrossRefPubMed Momi D, Ozdemir RA, Tadayon E, Boucher P, Shafi MM, Pascual-Leone A, Santarnecchi E (2021) Network-level macroscale structural connectivity predicts propagation of transcranial magnetic stimulation. Neuroimage 229:117698CrossRefPubMed
go back to reference Noble S, Scheinost D, Constable RT (2019) A decade of test-retest reliability of functional connectivity: a systematic review and meta-analysis. Neuroimage 203:116157CrossRefPubMed Noble S, Scheinost D, Constable RT (2019) A decade of test-retest reliability of functional connectivity: a systematic review and meta-analysis. Neuroimage 203:116157CrossRefPubMed
go back to reference Quentin R, Chanes L, Verne M, Valero-Cabré A (2015) Fronto-parietal anatomical connections influence the modulation of conscious visual perception by high-beta frontal oscillatory activity. Cereb Cortex 25(8):2095–2101CrossRefPubMed Quentin R, Chanes L, Verne M, Valero-Cabré A (2015) Fronto-parietal anatomical connections influence the modulation of conscious visual perception by high-beta frontal oscillatory activity. Cereb Cortex 25(8):2095–2101CrossRefPubMed
go back to reference Silverstein BH, Asano E, Sugiura A, Sonoda M, Lee MH, Jeong JW (2020) Dynamic tractography: Integrating cortico-cortical evoked potentials and diffusion imaging. Neuroimage 215:116763CrossRefPubMed Silverstein BH, Asano E, Sugiura A, Sonoda M, Lee MH, Jeong JW (2020) Dynamic tractography: Integrating cortico-cortical evoked potentials and diffusion imaging. Neuroimage 215:116763CrossRefPubMed
go back to reference Tournier J, Calamante F and Connelly A. (2010) Improved probabilistic streamlines tractography by 2 nd order integration over fibre orientation distributions. Proce Int Soc Magnet Reson Med 1670 Tournier J, Calamante F and Connelly A. (2010) Improved probabilistic streamlines tractography by 2 nd order integration over fibre orientation distributions. Proce Int Soc Magnet Reson Med 1670
go back to reference Voineskos AN, Farzan F, Barr MS, Lobaugh NJ, Mulsant BH, Chen R, Fitzgerald PB, Daskalakis ZJ (2010) The role of the corpus callosum in transcranial magnetic stimulation induced interhemispheric signal propagation. Biol Psychiat 68(9):825–831CrossRefPubMed Voineskos AN, Farzan F, Barr MS, Lobaugh NJ, Mulsant BH, Chen R, Fitzgerald PB, Daskalakis ZJ (2010) The role of the corpus callosum in transcranial magnetic stimulation induced interhemispheric signal propagation. Biol Psychiat 68(9):825–831CrossRefPubMed
Metadata
Title
An integrated TMS-EEG and MRI approach to explore the interregional connectivity of the default mode network
Authors
Romina Esposito
Marta Bortoletto
Domenico Zacà
Paolo Avesani
Carlo Miniussi
Publication date
01-04-2022
Publisher
Springer Berlin Heidelberg
Published in
Brain Structure and Function / Issue 3/2022
Print ISSN: 1863-2653
Electronic ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-022-02453-6

Other articles of this Issue 3/2022

Brain Structure and Function 3/2022 Go to the issue