Effect of low-level laser stimulation on EEG
| Autor: | Joe-Air Jiang, Wen-Dien Chang, Yi-Chia Shan, Yang-Chyuan Chang, Jih-Huah Wu, Wei Fang, Chang-Wei Hsieh |
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| Rok vydání: | 2012 |
| Předmět: |
Brain activation
Article Subject Laser diode medicine.diagnostic_test Frequency band business.industry Stimulation lcsh:Other systems of medicine Electroencephalography Laser lcsh:RZ201-999 law.invention Complementary and alternative medicine Sensory afferents law Alpha rhythm medicine business Biomedical engineering Research Article |
| Zdroj: | Evidence-based Complementary and Alternative Medicine : eCAM Evidence-Based Complementary and Alternative Medicine, Vol 2012 (2012) |
| ISSN: | 1741-4288 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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