The effects on tACS and tRNS on language function : A literature review

Article Article scientifique Revue de la littérature The effects on tACS and tRNS on language function : A literature review eng 2025-08-02 author Urwicz Leah 0000-0003-4632-6535 921088 Département des neurosciences cliniques (OTONO) author Marchesotti Silvia 876684 Département des neurosciences cliniques (OTONO) author Guggisberg Adrian 0000-0001-7178-7793 707883 Département des neurosciences cliniques (OTONO) 105630 10.1016/j.bandl.2025.105630 40753718 0093-934X https://www.sciencedirect.com/science/article/pii/S0093934X25000999 Transcranial electrical stimulation (tES) techniques are promising noninvasive tools for modulating language-related neural processes. While transcranial direct current stimulation (tDCS) has been well studied, transcranial alternating current stimulation (tACS) and transcranial random noise stimulation (tRNS) remain less characterized. This review synthesizes findings from 11 studies (394 participants) investigating the effects of tACS and tRNS on language processing in neurotypical individuals. Both techniques significantly enhance phonological and semantic processing, with a moderate overall effect size, and with outcomes varying according to stimulation parameters and target regions. The effect remained significant after adjusting for potential publication bias, supporting the robustness of the findings. Prefrontal stimulation was preferentially used for enhancing phonological skills, while stimulation of both temporal and prefrontal areas influenced semantic processing. Future research would benefit from examining network-level effects, developing personalized stimulation protocols, and assessing long-term outcomes - areas that remain underexplored - to advance theoretical understanding and clinical applications. Language tACS tES tRNS Dewey 616.8 Swiss National Science Foundation NCCR Evolving Language (phase II) 225146 CH Programmes 61 Département des neurosciences cliniques 226 false 567 Neuroréhabilitation et neuromodulation 910 Brain and language 269 e340f09d-be85-4e77-8556-d59b25115411 Article (Published version) Public Urwicz-tACS_rRNS_language-Brain_Lan.pdf 2054336 application/pdf CC BY-4.0 50947e60788e597eb82bf9d694b762c3738a06466dedbfe32d377a5ec5d34d4b openAccess Faculté de médecine / Section de médecine clinique / Département des neurosciences cliniques

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The effects on tACS and tRNS on language function : A literature review	Brain and language			2025	37	48

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