AI Article Synopsis
- Researchers explored whether low-level laser stimulation outside of acupoints could influence brain activity, specifically EEG changes.
- The study used a laser array with specific settings to stimulate the palm without sensation while measuring EEG signals before, during, and after the stimulation.
- Results showed that this laser stimulation enhanced alpha and theta wave activity in the back of the brain and decreased beta activity in the front, with effects lasting for at least 15 minutes, resembling patterns observed during meditation.
Article Abstract
Conventional laser stimulation at the acupoint can induce significant brain activation, and the activation is theoretically conveyed by the sensory afferents. Whether the insensible low-level Laser stimulation outside the acupoint could also evoke electroencephalographic (EEG) changes is not known. We designed a low-level laser array stimulator (6 pcs laser diode, wavelength 830 nm, output power 7 mW, and operation frequency 10 Hz) to deliver insensible laser stimulations to the palm. EEG activities before, during, and after the laser stimulation were collected. The amplitude powers of each EEG frequency band were analyzed. We found that the low-level laser stimulation was able to increase the power of alpha rhythms and theta waves, mainly in the posterior head regions. These effects lasted at least 15 minutes after cessation of the laser stimulation. The amplitude power of beta activities in the anterior head regions decreased after laser stimulation. We thought these EEG changes comparable to those in meditation.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3438917 | PMC |
| http://dx.doi.org/10.1155/2012/951272 | DOI Listing |
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