Impact of stimulus configuration on steady state visual evoked potentials (SSVEP) response

Chi-Hsu Wu, Heba Lakany

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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We investigate the impact of configuration of multistimuli presented in computer monitor to steady-state visual evoked potential response. The configuration of stimuli is defined by three parameters-the size of stimuli, the separation distance between the stimuli and the layout. Two 4 by 4 checkerboards in twelve configurations were presented to the subjects. 9 subjects participated in this study. Subjects’ electroencephalography (EEG) data was off-line analyzed by using Fast Fourier Transform (FFT). The mean classification rates of configuration with bigger size and larger separation distance is higher than those configurations with smaller size and shorter separation distance. These results suggest that the stimulus size is the most important parameter of three, followed by the separation distance and layout.
Original languageEnglish
Title of host publicationThe Fourth International Conference on Advanced Cognitive Technologies and Applications
Subtitle of host publicationCOGNITIVE 2012
Place of Publication[S.l.]
Publisher IARIA
Number of pages6
ISBN (Print)978-1-61208-218-9
Publication statusPublished - 22 Jul 2012


  • steady state visual evoked potential
  • brain computer interface
  • electroencephalography

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