Clinical Study of Non-invasive 40-Hz Audiovisual Stimulation Guided by Gamma EEG Monitoring for Promoting Perioperative Brain Function Recovery in Children
Exposure to general anesthesia during early brain development has emerged as an important risk factor for long-term attention-deficit/hyperactivity disorder (ADHD)-like behaviors and learning difficulties in school-aged children. However, objective biomarkers for perioperative neurofunctional assessment and effective non-invasive physical interventions remain lacking in clinical practice.
This study adopts a prospective randomized controlled trial (RCT) design to establish a clinical cohort of preschool children undergoing surgery under general anesthesia. Early postoperative intervention will be performed using 40-Hz non-invasive synchronized audiovisual stimulation. Portable electroencephalography (EEG) technology will be employed to quantify prefrontal gamma oscillatory activity by analyzing the relative gamma-band power spectrum and phase-locking index (PLI) during the perioperative period. The study aims to characterize the pathological suppression of gamma oscillations following general anesthesia and to evaluate the restorative effects of 40-Hz stimulation on gamma-band neural activity. Long-term postoperative follow-up, combined with the Conners Rating Scales and the Child Behavior Checklist (CBCL), will be conducted to systematically investigate the association between gamma oscillation restoration and improvements in long-term ADHD-like symptoms.
The successful completion of this project will establish an integrated pediatric postoperative neurorehabilitation strategy encompassing screening, intervention, and outcome evaluation, thereby providing a novel clinical approach with substantial translational potential and broad prospects for clinical implementation.
Studieoversigt
Status
Intervention / Behandling
Undersøgelsestype
Tilmelding (Anslået)
Fase
- Fase 1
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Children aged 3-6 years, irrespective of sex, representing the critical period of brain network development.
Classified as American Society of Anesthesiologists (ASA) Physical Status I or II.
Scheduled to undergo elective single-session surgery under general anesthesia (including inhalational anesthesia with agents such as sevoflurane) with an expected anesthesia duration of ≥1 hour, including procedures such as inguinal hernia repair, orchiopexy, and adenoidectomy.
Normal preoperative neurodevelopment as assessed by routine clinical evaluation, with parents or legal guardians able to understand the study protocol and willing to provide written informed consent.
Exclusion Criteria:
- A preoperative diagnosis of autism spectrum disorder (ASD), epilepsy, intellectual developmental disorder, attention-deficit/hyperactivity disorder (ADHD), or any other neurological or psychiatric disorder.
Severe visual impairment (e.g., cataract or amblyopia) or significant hearing impairment that would preclude the administration of synchronized audiovisual stimulation.
A personal or family history of photosensitive epilepsy, owing to safety considerations.
Occurrence of major anesthesia-related complications during surgery, including severe allergic reactions, malignant hyperthermia, prolonged severe hypoxemia, or other serious perioperative adverse events.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Ingen indgriben: kontrolgruppe
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Eksperimentel: trail group
add 40Hz synchronized audiovisual stimulation.
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Early postoperative intervention will be performed using 40-Hz non-invasive synchronized audiovisual stimulation.
Portable electroencephalography (EEG) technology will be employed to quantify prefrontal gamma oscillatory activity by analyzing the relative gamma-band power spectrum and phase-locking index (PLI) during the perioperative period.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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ADHD-related behavioral scores at 3 and 6 months postoperatively
Tidsramme: 1，3，6 month
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Behavioral outcomes will be assessed using the Conners' Parent Rating Scale-Short Form (CPRS-S).
Primary analyses will focus on the Hyperactivity-Impulsivity and Learning Problems (Inattention) subscales.
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1，3，6 month
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Resting-state prefrontal gamma-band relative power spectral density (PSD, 35-45 Hz)
Tidsramme: 1month
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Resting-state EEG recordings will be obtained during postoperative follow-up to quantify the relative gamma-band power spectral density (35-45 Hz), serving as an objective indicator of cumulative recovery of cortical neural synchronization.
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1month
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Magnitude of early postoperative gamma-band suppression
Tidsramme: 1month
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The percentage reduction in prefrontal gamma-band EEG power during the immediate post-anesthesia recovery period relative to the preoperative baseline will be calculated to evaluate the sensitivity of gamma oscillations as an electrophysiological biomarker of anesthesia-induced brain dysfunction.
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1month
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Samarbejdspartnere og efterforskere
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Primær færdiggørelse (Anslået)
Studieafslutning (Anslået)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- Hui Wang-2026.7
Plan for individuelle deltagerdata (IPD)
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