Shorttermmemory problems can be improved with laser therapy, according to new study ScienceAdvances
aged between 18 and 25. Participants were treated with laser light to the right prefrontal cortex at wavelengths of 1,064 nm, while others were treated at a shorter wavelength, or treatment was delivered to the left prefrontal cortex. Each participant was also treated with a sham, or inactive, tPBM to rule out the placebo effect.
After tPBM treatment over 12 minutes, the participants were asked to remember the orientations or color of a set of items displayed on a screen. The participants treated withto the right prefrontal cortex at 1,064 nm showed clear improvements in memory over those who had received the other treatments.
Data, including from electroencephalogram monitoring during the experiment was analyzed at the University of Birmingham and showed changes inThe researchers do not yet know precisely why the treatment results in positive effects on working memory, nor how long the effects will last. Further research is planned to investigate these aspects.
Professor Ole Jensen, also at the Center for Human Brain Health, said,"We need further research to understand exactly why the tPBM is having this positive effect, but it's possible that the light is stimulating the astrocytes—the powerplants—in the nerve cells within the prefrontal cortex, and this has a positive effect on the cells' efficiency. We will also be investigating how long the effects might last.
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