Evaluation of transient evoked otoacoustic emissions using low-level laser stimulation in individuals with normal hearing with tinnitus

2017 ◽  
Vol 45 (1) ◽  
pp. 45 ◽  
Author(s):  
HanaaH Elsanadiky ◽  
Yasser Nafie
2014 ◽  
Vol 29 (6) ◽  
pp. 1867-1874 ◽  
Author(s):  
Razvan-Alexandru Campeanu ◽  
Beatrice Mihaela Radu ◽  
Sanda Maria Cretoiu ◽  
Daniel Dumitru Banciu ◽  
Adela Banciu ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Jih-Huah Wu ◽  
Yang-Chyuan Chang

In a previous study, we found that the low-level laser (LLL) stimulation at the palm with a frequency of 10 Hz was able to induce significant brain activation in normal subjects with opened eyes. However, the electroencephalography (EEG) changes to LLL stimulation in subjects with closed eyes have not been studied. In the present study, the laser array stimulator was applied to deliver insensible laser stimulations to the palm of the tested subjects with closed eyes (the laser group). The EEG activities before, during, and after the laser stimulation were collected. The EEG amplitude powers of each EEG frequency band at 19 locations were calculated. These power data were then analyzed by SPSS software using repeated-measure ANOVAs and appropriate posthoc tests. We found a pronounced decrease in the EEG power in alpha-bandwidth during laser simulation and then less decrease in the EEG power in delta-bandwidth in normal subjects with laser stimulation. The EEG power in beta-bandwidth in the right occipital area also decreased significantly in the laser group. We suggest that LLL stimulation might be conducive to falling into sleep in patients with sleep problems.


2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Jih-Huah Wu ◽  
Wen-Dien Chang ◽  
Chang-Wei Hsieh ◽  
Joe-Air Jiang ◽  
Wei Fang ◽  
...  

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.


2016 ◽  
Author(s):  
Seulki Jang ◽  
Myungjin Ha ◽  
Sangyeob Lee ◽  
Sungkon Yu ◽  
Jihoon Park ◽  
...  

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