Article · Cognitron Discovery
Cognition after COVID-19 in 112,964 adults
One of the largest studies to objectively test cognition after COVID-19 used Cognitron to assess 112,964 adults in England, remotely and without supervision.
16 October 2026
Participants completed Cognitron's tasks online. Their scores were adjusted for age, sex, ethnicity, education, deprivation, and pre-existing health conditions, then combined into a global cognitive score.
Cognitron detected small but measurable cognitive deficits in people who had had COVID-19 compared with those who had not. The deficits were largest in people with unresolved symptoms (-0.42 standard deviations) and in those admitted to intensive care (-0.35). The findings held up across multiple statistical checks.
The study shows that Cognitron can reliably pick up subtle cognitive change at population scale, remotely, in a way that would not be practical with clinic-based testing.
Hampshire A, Azor A, Atchison C, et al. Cognition and memory after Covid-19 in a large community sample. New England Journal of Medicine. 2024;390(9):806-818. doi.org/10.1056/NEJMoa2311330