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  1. Article ; Online: Sex differences in brain excitability revealed by concurrent iTBS/fNIRS.

    Kan, Rebecca L D / Zhang, Bella B B / Lin, Tim T Z / Tang, Alvin H P / Xia, Adam W L / Qin, Penny P I / Jin, Minxia / Fong, Kenneth N K / Becker, Benjamin / Yau, Suk-Yu / Kranz, Georg S

    Asian journal of psychiatry

    2024  Volume 96, Page(s) 104043

    Abstract: Sex differences have been claimed an imperative factor in the optimization of psychiatric treatments. Intermittent theta-burst stimulation (iTBS), a patterned form of repetitive transcranial magnetic stimulation, is a promising non-invasive treatment ... ...

    Abstract Sex differences have been claimed an imperative factor in the optimization of psychiatric treatments. Intermittent theta-burst stimulation (iTBS), a patterned form of repetitive transcranial magnetic stimulation, is a promising non-invasive treatment option. Here, we investigated whether the real-time neural response to iTBS differs between men and women, and which mechanisms may mediate these differences. To this end, we capitalized on a concurrent iTBS/functional near-infrared spectroscopy setup over the left dorsolateral prefrontal cortex, a common clinical target, to test our assumptions. In a series of experiments, we show (1) a biological sex difference in absolute hemoglobin concentrations in the left dorsolateral prefrontal cortex in healthy participants; (2) that this sex difference is amplified by iTBS but not by cognitive tasks; and (3) that the sex difference amplified by iTBS is modulated by stimulation intensity. These results inform future stimulation treatment optimizations towards precision psychiatry.
    Language English
    Publishing date 2024-04-03
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2456678-0
    ISSN 1876-2026 ; 1876-2018
    ISSN (online) 1876-2026
    ISSN 1876-2018
    DOI 10.1016/j.ajp.2024.104043
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Instantaneous effects of prefrontal transcranial magnetic stimulation on brain oxygenation: A systematic review.

    Xia, Adam W L / Jin, Minxia / Qin, Penny P I / Kan, Rebecca L D / Zhang, Bella B B / Giron, Cristian G / Lin, Tim T Z / Li, Ami S M / Kranz, Georg S

    NeuroImage

    2024  Volume 293, Page(s) 120618

    Abstract: 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 ... ...

    Abstract 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.
    Language English
    Publishing date 2024-04-16
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1147767-2
    ISSN 1095-9572 ; 1053-8119
    ISSN (online) 1095-9572
    ISSN 1053-8119
    DOI 10.1016/j.neuroimage.2024.120618
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3664: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 7: Show issues

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  3. Article ; Online: Moderators of stimulation-induced neural excitability in the left DLPFC: A concurrent iTBS/fNIRS case study.

    Kan, Rebecca L D / Lin, Tim T Z / Zhang, Bella B B / Giron, Cristian G / Jin, Minxia / Qin, Penny P I / Xia, Adam W L / Chan, Sherry K W / Chau, Bolton K H / Kranz, Georg S

    Brain stimulation

    2023  Volume 16, Issue 5, Page(s) 1445–1447

    MeSH term(s) Dorsolateral Prefrontal Cortex ; Prefrontal Cortex ; Transcranial Magnetic Stimulation ; Cohort Studies
    Language English
    Publishing date 2023-09-24
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 2394410-9
    ISSN 1876-4754 ; 1935-861X
    ISSN (online) 1876-4754
    ISSN 1935-861X
    DOI 10.1016/j.brs.2023.09.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6740: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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