Title :
A coded summation method for measuring a visual evoked response
Author :
Ninomija, Satoki P. ; Fujikake, Mariko
Author_Institution :
Aoyama Gakuin Univ., Tokyo, Japan
Abstract :
A method for measuring visual evoked potentials (VEP) on humans at work is reported. The work consists of keying from a keyboard a character that is flashed on a screen, and a light stimulus evokes the visual response. There are two problems in this approach. One is that the energy of the light stimulus is less than that of the flash on the screen. The other is that the performance of work produces noise in the EEG. The coded summation method (CSM) is used to overcome these problems. The effectiveness of the CSM is evaluated. It is concluded that the CSM can measure the VEP in a shorter period of time than the usual averaged summation method, and it has higher reliability in detecting peaks in the EEG
Keywords :
bioelectric potentials; biological techniques and instruments; vision; EEG peaks detection; averaged summation method; character keying; coded summation method; flashed character; humans at work; keyboard; light stimulus energy; visual evoked response measurement; Brain modeling; Cathode ray tubes; Displays; Educational institutions; Electroencephalography; Energy measurement; Eyes; Humans; Noise measurement; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95951
