Researchers find a way to transmit EEG signals through light

By | August 26, 2015


A team of researchers from South Korea has found a way to transmit signals from EEG through light, which means it won’t be necessary to stick number of wires to the patient’s body.

Till date, many wires attached to the patient’s body monitor the vital signs which not really looks good. So the researchers from Pukyong National University, Busan have suggested the use of visible light communication, which is also called as Li-Fi. They have proposed this idea to transmit the readings from an electroencephalograph (EEG) over a distance of almost 50 cm.

Yeon Ho Chung, an engineer at Pukyong National University in Busan said to IEEE sensors Journals, “It’s a very much friendlier means of transmitting bio-medical signals in a hospital,” During the experiment, the team noticed that the EGG signals are weak, which are not enough to transmit the signals through red, green and blue LEDs. So they amplify the signal by using color filters.

Another team of researchers from Pukyong National University in Busan have already found a way to demonstrate the electrocardiogram (ECG) readings through Li-Fi, but the team led by Yeon Ho Chung uses the Li-Fi for electrooculography, which measures eye’s movement mainly to help the paralyzed patient. If the project is proved successful, it can use Li-Fi to transmit signals to control computers with the movements of eye.