Brain health / cognition
Transcranial PBM for cognition in healthy adults systematic review and meta-analysis
Salehpour F, Majdi A, Pazhuhi M, et al. Photobiomodulation, Photomedicine, and Laser Surgery. 2019.
A meta-analysis of healthy adults reported improved cognition-related outcomes, but with publication-bias concerns.
Evidence grade
low
Effect direction
positive
Panel relevance
not-panel-replicable
Key findings
- Nine publications met inclusion criteria; six full-text publications in young adults were meta-analyzed.
- tPBM improved cognition-related outcomes with a standardized mean difference of 0.833.
- Funnel plot asymmetry suggested possible publication bias.
Protocol details
| Wavelengths | Not reported nm |
|---|---|
| Irradiance | Not reported mW/cm2 |
| Fluence | Not reported J/cm2 |
| Session time | Not reported minutes |
| Frequency | Varied by study |
| Duration | Varied by study |
| Treatment area | Transcranial targets |
| Device type | Transcranial photobiomodulation devices |
Caveats
- This is emerging cognitive-enhancement evidence, not settled consumer wellness guidance.
- Devices and cranial placement matter more than whole-body panel proximity.