Instantaneous effects of prefrontal transcranial magnetic stimulation on brain oxygenation: A systematic review

Autor: Adam W.L. Xia, Minxia Jin, Penny P.I. Qin, Rebecca L.D. Kan, Bella B.B. Zhang, Cristian G. Giron, Tim T.Z. Lin, Ami S.M. Li, Georg S. Kranz
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: NeuroImage, Vol 293, Iss , Pp 120618- (2024)
Druh dokumentu: article
ISSN: 1095-9572
DOI: 10.1016/j.neuroimage.2024.120618
Popis: This systematic review investigates how prefrontal transcranial magnetic stimulation (TMS) immediately influences neuronal excitability based on oxygenation changes measured by functional magnetic resonance imaging (fMRI) or functional near-infrared spectroscopy (fNIRS). A thorough understanding of TMS-induced excitability changes may enable clinicians to adjust TMS parameters and optimize treatment plans proactively. Five databases were searched for human studies evaluating brain excitability using concurrent TMS/fMRI or TMS/fNIRS. Thirty-seven studies (13 concurrent TMS/fNIRS studies, 24 concurrent TMS/fMRI studies) were included in a qualitative synthesis. Despite methodological inconsistencies, a distinct pattern of activated nodes in the frontoparietal central executive network, the cingulo-opercular salience network, and the default-mode network emerged. The activated nodes included the prefrontal cortex (particularly dorsolateral prefrontal cortex), insula cortex, striatal regions (especially caudate, putamen), anterior cingulate cortex, and thalamus. High-frequency repetitive TMS most consistently induced expected facilitatory effects in these brain regions. However, varied stimulation parameters (e.g., intensity, coil orientation, target sites) and the inter- and intra-individual variability of brain state contribute to the observed heterogeneity of target excitability and co-activated regions. Given the considerable methodological and individual variability across the limited evidence, conclusions should be drawn with caution.
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