Ponysushy

The evidence comes from a peer-reviewed neuroimaging study published in PLOS ONE titled “Playing Super Mario 64 increases hippocampal grey matter in older adults.” Researchers followed adults aged 55–75 who had little to no prior video-game experience and randomly assigned them to one of three groups for 6 months: a 3D video-game group playing Super Mario 64, a music-training group (piano lessons), or a passive control group. Brain MRI scans taken before and after the intervention showed that only the video-game group experienced a significant increase in hippocampal grey matter, a brain region critical for memory formation and spatial navigation.

Importantly, the control group that did not learn a new skill showed the opposite effect: measurable hippocampal grey-matter loss over the same period, consistent with age-related brain atrophy. The music group showed growth in other brain regions linked to executive function but not the hippocampus, highlighting that the effect was specific to the spatial, navigation-heavy demands of 3D gaming. Participants in the gaming group also showed improvements in short-term memory performance, which correlated with the increase in hippocampal volume, reinforcing that the structural brain changes were functionally meaningful—not just cosmetic MRI findings.