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Brain Stimulation Paired With Structured Language Learning in Adults

7. august 2026 opdateret af: General Neuro Inc.

A Study of Transcranial Electrical Stimulation (tES) Paired With Structured Learning Protocols for Accelerated Skill Acquisition: Sub-Protocol A (Adult Language Learning)

This study investigates whether transcranial electrical stimulation (tES) delivered during structured language-learning sessions affects the rate and quality of second-language acquisition in adults.

Adults who are learning or planning to learn a new language are randomly assigned in equal numbers to receive either active stimulation or sham (placebo) stimulation while completing structured language-learning content. Participants wear a non-invasive transcranial electrical stimulation headset that delivers a low-level electrical current through electrodes resting on the scalp, targeting cortical regions associated with language. Sessions typically last 20 to 30 minutes and may be completed at home or in person at a participating language program.

Language proficiency is measured with a standardized assessment before and after the intervention period, with additional app-derived performance metrics and participant-reported measures collected throughout. A follow-up assessment may be conducted up to 12 months after the intervention ends to evaluate whether any observed effects persist.

In this study the device is applied as a learning aid in healthy adults. It is not used to diagnose, treat, cure, or prevent any disease.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The study is a prospective, randomized, double-blind, sham-controlled investigation. Participants are randomized 1:1 to active or sham stimulation, with stratification by site or cohort as applicable. Neither participants nor the research team conducting outcome assessments are aware of assignment during data collection. Stimulation assignment is held by the Sub-Investigator and is not disclosed to the Principal Investigator until all outcome data are collected and locked and primary analyses are finalized.

Sessions may be delivered by decentralized at-home administration, on-site administration at partner language programs and educational institutions, or a hybrid of the two.

The protocol declares a bounded parameter envelope within which specific stimulation parameters, learning content, partner sites, and assessment instruments may be selected per cohort without protocol amendment. All parameters operate within the LOTES-2023 limited-output standard for transcranial electrical stimulation devices. For adult participants the declared envelope permits 0 to 4 mA average absolute current, a maximum current density of 2 mA/cm2 at the electrode contact area, and a maximum session duration of 60 minutes subject to a 6000 mC total-charge-per-session ceiling. Anticipated session durations are 20 to 30 minutes. Any modality within the transcranial electrical stimulation family may be used, including tDCS, tACS, tRNS, and tPCS.

Intended cortical targets are the left perisylvian region and adjacent association cortex, including Broca's area and Wernicke's area. Montages use standard cephalic or extracephalic placements with at least one electrode positioned on the head.

Because assessment instruments and specific stimulation parameters are selected per cohort within the declared envelope, each enrollment cohort has a cohort-specific Statistical Analysis Plan finalized and locked prior to unblinding of that cohort.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02131
        • Rekruttering
        • General Neuro, Inc.
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Adults aged 18 years or older
  • Able to understand the consent materials and the informed consent process in English, or in another language for which an IRB-approved consent form is available
  • Willing and able to participate in structured language-learning activities for the duration of the intervention period
  • Able to provide written informed consent

Exclusion Criteria:

  • History of epilepsy or any seizure disorder
  • Active skin disease, open wounds, or significant skin irritation at electrode contact sites
  • Implanted electronic medical devices where stimulation would be contraindicated per device manufacturer guidance or investigator judgment after individual risk assessment
  • Significant cognitive impairment that would interfere with informed consent or study participation
  • Any other condition that, in the investigator's judgment, would compromise participant safety or the integrity of the study data

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Active Stimulation
Participants receive active transcranial electrical stimulation delivered through a non-invasive scalp-mounted headset while completing structured language-learning content. Stimulation amplitude and session duration are selected per cohort from the declared parameter envelope, with current ramping at session start and end. Sessions are typically 20 to 30 minutes.
Non-invasive transcranial electrical stimulation delivered by a scalp-mounted headset within the LOTES-2023 limited-output envelope, paired with structured language-learning content. Adult declared range 0 to 4 mA average absolute current, maximum current density 2 mA/cm2 at the electrode contact area, and maximum session duration 60 minutes subject to a 6000 mC per-session total charge limit. Electrodes are placed in standard cephalic or extracephalic montages targeting the left perisylvian region and adjacent association cortex.
Sham-komparator: Sham Stimulation
Participants receive sham stimulation through the same non-invasive scalp-mounted headset while completing the same structured language-learning content. Sham provides the sensory experience of stimulation onset without sustained current delivery. The specific validated sham approach is selected and documented per cohort.
Sham stimulation delivered by the same scalp-mounted headset, providing the initial cutaneous sensory experience of stimulation onset without sustained current delivery, paired with the same structured language-learning content. The specific validated sham approach is selected per cohort and documented in the corresponding cohort plan.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change from baseline in Pearson PTE Express overall score
Tidsramme: Baseline to end of intervention period, up to 8 weeks
Change in the overall score on the Pearson Test of English (PTE) Express, a computer-delivered, remotely proctored assessment of English language proficiency covering listening, reading, speaking, and writing. The overall score is reported on the Global Scale of English and ranges from 10 to 90, with higher scores indicating greater English proficiency.
Baseline to end of intervention period, up to 8 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Incidence of adverse events
Tidsramme: Through the intervention period and follow-up, up to 12 months
Number and severity of adverse events reported, including tingling, itching or warmth under the electrodes, skin redness, headache, fatigue, difficulty sleeping, dizziness or lightheadedness, phosphenes, and skin irritation.
Through the intervention period and follow-up, up to 12 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Alec Sheffield, PhD, General Neuro Inc.

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Hjælpsomme links

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. september 2026

Primær færdiggørelse (Anslået)

1. juni 2031

Studieafslutning (Anslået)

1. juni 2032

Datoer for studieregistrering

Først indsendt

3. august 2026

Først indsendt, der opfyldte QC-kriterier

7. august 2026

Først opslået (Faktiske)

13. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

7. august 2026

Sidst verificeret

1. august 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • GN-001-A
  • GN-001 (Anden identifikator: General Neuro, Inc.)
  • 20262153 (Anden identifikator: WCG)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data are not planned to be shared. De-identified study data may be shared with academic collaborators under data sharing agreements, as described in the study protocol.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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