Cited by 49Transcranial Magnetic Stimulation StudiesFunctional Brain Connectivity StudiesAdvanced MRI Techniques and Applications

Neurochemical Modulation in Posteromedial Default-mode Network Cortex Induced by Transcranial Magnetic Stimulation

Open access
Vidal-Piñeiro, Dídac, Martín-Trias, Pablo, Falcón, Carles, Bargalló, Núria, Clemente, Imma C., Valls-Solé, Josep, Junqué, Carme, Pascual-Leone, Alvaro +1 more·2015·Brain Stimulation

Abstract

Background The Default Mode Network (DMN) is severely compromised in several psychiatric and neurodegenerative disorders where plasticity alterations are observed. Glutamate and GABA are the major excitatory and inhibitory brain neurotransmitters respectively and are strongly related to plasticity responses and large-scale network expression.Objective To investigate whether regional Glx (Glutamate + Glutamine) and GABA could be modulated within the DMN after experimentally-controlled induction of plasticity and to study the effect of intrinsic connectivity over brain responses to stimulation.Methods We applied individually-guided neuronavigated Theta Burst Stimulation (TBS) to the left inferior parietal lobe (IPL) in-between two magnetic resonance spectroscopy (MRS) acquisitions to 36 young subjects. A resting-state fMRI sequence was also acquired before stimulation.Results After intermittent TBS, distal GABA increases in posteromedial DMN areas were observed. Instead, no significant changes were detected locally, in left IPL areas. Neurotransmitter modulation in posteromedial areas was related to baseline fMRI connectivity between this region and the TBS-targeted area.Conclusions The prediction of neurotransmitter modulation by connectivity highlights the relevance of connectivity patterns to understand brain responses to plasticity-inducing protocols. The ability to modulate GABA in a key core of the DMN by means of TBS may open new avenues to evaluate plasticity mechanisms in a key area for major neurodegenerative and psychiatric conditions.

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Crossref · 10.1016/j.brs.2015.04.005

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  • Theta burst stimulation via transcranial magnetic stimulation has been used successfully to increase GABA within the DMN.

    “theta burst stimulation via transcranial magnetic stimulation has been used successfully to increase GABA within the DMN [200].”

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Authors
Vidal-Piñeiro, D., Martín-Trias, P., Falcón, C., Bargalló, N., Clemente, I. C., Valls-Solé, J., Junqué, C., Pascual-Leone, A., & Bartrés-Faz, D.
Affiliations
  • Universitat de Barcelona (ES)
  • Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (ES)
  • Hospital Clínic de Barcelona (ES)
  • Consorci Institut D'Investigacions Biomediques August Pi I Sunyer (ES)
Venue
Brain Stimulation
Publisher
Elsevier BV
Published
2015-09
Volume
8
Issue
5
Pages
937-944
ISSN
  • 1876-4754 (ISSN-L)
  • 1935-861X
OpenAlex
W2085399112
Cited by
49
References
87
Citations by year
2026: 2 · 2025: 5 · 2024: 2 · 2023: 4 · 2022: 8 · 2021: 9 · 2020: 6 · 2019: 3 · 2018: 5 · 2017: 3 · 2016: 1 · 2015: 1
FWCI
1.78
Type
journal article
Language
en
Open access
Locations
  • Brain stimulation (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Spanish Ministerio de Economia y Competitividad (PSI2012-38257)
  • National Institutes of Health (UL1 RR025758)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
Keywords
default mode network, posteromedial cortex, transcranial magnetic stimulation, theta burst stimulation, glutamate, glutamine, GABA, neurochemical modulation, synaptic plasticity, intrinsic functional connectivity, inferior parietal lobule, resting-state functional connectivity, brain connectivity
MeSH terms
Female, gamma-Aminobutyric Acid, Humans, Male, Parietal Lobe, Theta Rhythm, Glutamic Acid, Transcranial Magnetic Stimulation, Young Adult, Connectome

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