Time spent outdoors in the 24 hours before scanning is positively associated with grey matter volume in the right dorsolateral prefrontal cortex¶
Claim · All claims
Evidence · 1 study · designr1·q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? A study using the previous Day2Day dataset showed a positive association between time spent outdoors within 24 h before MRI measurement and grey matter volume in the right dorsolateral prefrontal cortex. → Falkenstein Kim 2026
Evidence¶
Falkenstein Kim 2026¶
Falkenstein Kim, Pauley Claire, Kühn Simone. (2026). Investigating effects of day-to-day variations in environmental exposure on the human brain: study protocol for the Day2Day Environment project. BMC Neuroscience. https://doi.org/10.1186/s12868-026-01052-z
q2 · i? · the article prints no effect size for this finding · design · r1
The protocol attributes this finding to a secondary study of the earlier Day2Day dataset; the review-like attribution states "one study showed a positive association" between outdoor time and right dorsolateral prefrontal cortex grey matter volume. No effect size is printed.
"one study showed a positive association between the time spent outdoors (within 24 h before the MRI measurement) and grey matter volume in the right dorsolateral prefrontal cortex"
Discussion¶
Related Claims¶
- Urban living is associated with higher activity in stress-related brain regions and reduced grey matter in dorsolateral prefrontal and pregenual anterior cingulate cortex after urban exposure during upbringing — related
- Time of day and days since the first scan are robust predictors of within-person variance in grey matter and total cortex volume — related
- Intensive navigational practice is associated with larger posterior hippocampus gray matter in taxi drivers — related
- Daily physiological changes in non-experimental situations influence measures of brain structure and function — a broader claim this one bears on
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
outdoor-time-associated-with-right-dlpfc-grey-matter |
title |
Time spent outdoors in the 24 hours before scanning is positively associated with grey matter volume in the right dorsolateral prefrontal cortex |
description |
Time spent outdoors in the 24 hours before scanning is positively associated with grey matter volume in the right dorsolateral prefrontal cortex |
status |
review |
evidence_strength |
weak |
newest_evidence |
2026 |
generated |
by process:wiki-ingest on 2026-09-26 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — falkenstein-kim-2026 |
Frontmatter is the page's machine-readable record — see the Schema & Guide.