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40 Hz Audiovisual Stimulation / Depression, Postpartum / Placebo Audiovisual Stimulation · Interventional Study
ClinicalTrials.gov · September 8, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a trial registration for a planned randomized controlled trial testing 40 Hz audiovisual stimulation for postpartum depression prevention in women undergoing elective cesarean section. Recruitment has not yet begun, and no results are available. The study cannot yet inform clinical practice.
Interventional, Randomized, Parallel, Triple masking, Prevention purpose. Depression, Postpartum; Female; age from 18 Years; to 49 Years. Intervention: 40Hz Audiovisual Stimulation Group. Compared with: Placebo Control Group — Placebo Comparator. n = 204. 1 site: China.
This is a trial registration for a planned randomized controlled trial testing 40 Hz audiovisual stimulation for postpartum depression prevention in women undergoing elective cesarean section. Recruitment has not yet begun, and no results are available. The study cannot yet inform clinical practice.
No efficacy, safety, or adverse event data are reported.
The source did not state who this applies to in practice.
This is a trial registration with no results posted; the study is not yet recruiting. It describes a planned intervention with a reasonable design but carries no evidence of efficacy or safety.
As stated by the source record.
Quoted from the source exactly as published.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no key findings. That is a gap in the analysis, not a judgement about the study.
Registry record from ClinicalTrials.gov (NCT07807462). This is a study registration, not published results. Lead sponsor: The First People's Hospital of Lianyungang. Recruitment status: NOT_YET_RECRUITING. Phase: NA. Study type: INTERVENTIONAL. Enrollment: 204 participants (ESTIMATED). Conditions: Depression, Postpartum. Interventions: DEVICE: 40 Hz Audiovisual Stimulation; DEVICE: Placebo Audiovisual Stimulation. Primary outcome measures: Edinburgh Postnatal Depression Scale Score at 42 Days Postpartum , 42 days after delivery. Brief summary: Postpartum depression (PPD) is a common mental health condition affecting 10%-30% of new mothers, with serious consequences for both mother and child. Effective prevention is limited by barriers to psychological or pharmacological treatments. This study evaluates whether short-term 40 Hz light and sound stimulation during and immediately after elective cesarean section can reduce PPD risk. The intervention group receives three 30-minute sessions of combined 40 Hz flashing light and pulsed sound (starting after baby delivery, then at 24 and 48 hours postpartum). The control group receives identical non-flickering light and white noise as placebo.The main outcome is the Edinburgh Postnatal Depression Scale score at 42 days postpartum. Secondary outcomes include depression rates, insomnia severity, and anxiety levels.Participants are women aged ≥18 years with single full-term pregnancy scheduled for elective cesarean section. Exclusion criteria include psychiatric disorders, epilepsy, or eye conditions affecting light sensitivity. If effective, this non-invasive, drug-free intervention could provide a safe and accessible PPD prevention strategy during routine cesarean delivery.
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