Language was a recurring obstacle, and interpreters proved essential rather than optional. Scheduling mattered too — sessions were arranged to avoid school runs and the fasting month, and breaks allowed for prayer. Women stressed that gender-matched researchers and privacy during cap fitting, which can require removing a hijab, were preconditions for taking part. "I would only feel comfortable if it was a female researcher," one participant said. Some male participants later reported similar discomfort with physical contact from female researchers, prompting the team to recommend gender matching for everyone.

Mistrust ran deep, rooted in historical mistreatment of minoritized groups in research. "I did not want to be approached by researchers as a 'guinea pig,'" one participant said. Others questioned who funded the work and how their data would be used. The fear of the unknown was also concrete: several participants initially asked whether the devices could "see my thoughts" or "affect my brain." After trying the equipment, all ten imaging participants gave the maximum safety rating. As one put it, "When I saw how it was done and that nothing bad happened, I felt more relaxed about trying it myself."

Does the data hold up?

Technically, the results are encouraging but preliminary. A statistical comparison found no significant difference in fNIRS signal quality between community-collected data and laboratory recordings (p = 0.68). EEG data was somewhat noisier outside the lab: 70% of recording segments survived quality checks on average, compared with 84% in the laboratory, a small-to-moderate difference that fell just short of statistical significance (p = 0.053). The authors stress the small sample of ten and caution that the imaging component is exploratory rather than a statistically powered comparison.

The team also confronted hardware design head-on. EEG caps, which rely on gel and firm scalp contact, took longer to fit on participants with certain natural hairstyles and felt intrusive to at least one. In response, the researchers presented a 3D-printed EEG electrode prototype adapted for African-textured hair at the final workshop — a tangible sign, participants said, that their feedback was being acted on.

A template, not a panacea

The study has clear limits: a small, self-selected imaging subgroup, cohorts that were not demographically matched, and a fixed EEG artifact-rejection threshold. The authors call for larger, matched studies to confirm the findings.

Still, the pattern is consistent. Participants who had never encountered brain research said the workshops helped them "break the wall" of skepticism among their peers. One woman joined the imaging sessions only after hearing a friend describe them as safe — a reminder that trust in research often travels through people, not flyers.