<p>Sociodemographic characteristics of participants.</p>

<div> <p>Background</p><p>Maternal participation in neurodevelopmental research involving neuroimaging and diverse biological samples is essential for understanding prenatal influences on early brain development, yet willingness in low-resource settings remains underexplored.</p> <p>Method</p><p>We surveyed 300 mothers using a structured questionnaire to assess willingness to undergo brain health testing (with a focus on electroencephalography [EEG] and brain magnetic resonance imaging [MRI]), provide biological samples (blood, stool, urine, breast milk, placenta, amniotic fluid, vaginal/nasal fluid, saliva, tears), and consent to 10-year storage of diagnostic images and samples for future research.

Responses were analysed to examine associations between maternal sociodemographic factors and willingness to consent for each research component.</p> <p>Results</p><p>Ninety-two percent of participants expressed willingness for brain health testing, including ~82% and ~88% interest in EEG and MRI, respectively, even for untreatable conditions. Self-reported histories of foetal defects (5.3%) and birth defects (7.3%) were notably low.