Detection of mild cognitive impairment using a virtual reality-based stroop task: a cross-sectional study of embodied behavioral markers.
Jin-Hyuck Park
PMID 40783531WHAT IT FOUND
Hand movement path length and hesitation time during a virtual reality sorting task distinguished people with mild cognitive impairment better than the MoCA.
These digital markers showed high sensitivity and specificity in a large sample, offering a potential alternative to standard paper-based screening.
Key findings
013D trajectory length and hesitation latency from the virtual reality task had higher discriminative power (AUC 0.941 and 0.925) than the conventional MoCA-K screening tool (AUC 0.813).
02There were no significant differences in baseline gross or fine motor function between the groups, suggesting the virtual reality task differences were driven by cognitive rather than motor deficits.
03Virtual reality behavioral markers were significantly correlated with global cognitive function, inhibition, and working memory scores.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study only included individuals with amnestic mild cognitive impairment, so findings may not generalize to non-amnestic or multi-domain MCI subtypes. The VR task used only incongruent trials (no neutral or congruent baseline), which limits the ability to calculate traditional interference scores and may affect the specificity of the inhibitory control measurement. The study did not use neuroimaging to confirm that the observed behavioral differences were linked to specific prefrontal cortex degeneration. Participants required a 10-minute tutorial, and individual differences in prior technology experience could have influenced performance, despite the training.
Declared interests
The authors declared no competing interests. The study was supported by the National Research Foundation of Korea and the Ministry of Science and ICT.
The easy way to misread this
Do not assume these markers are ready for clinical use. The study used a specific desktop VR setup and a custom task; these results do not apply to standard tablet-based cognitive apps or head-mounted displays without further validation.