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ThinkMind // COGNITIVE 2012, The Fourth International Conference on Advanced Cognitive Technologies and Applications // View article cognitive_2012_4_20_40040


Impact of Stimulus Configuration on Steady State Visual Evoked Potentials (SSVEP) Response

Authors:
Chi-Hsu Wu
Heba Lakany

Keywords: Steady-State Visual Evoked Potential (SSVEP); Brain Computer Interface (BCI); Electroencephalography (EEG).

Abstract:
We investigate the impact of configuration of multi-stimuli 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.

Pages: 77 to 82

Copyright: Copyright (c) IARIA, 2012

Publication date: July 22, 2012

Published in: conference

ISSN: 2308-4197

ISBN: 978-1-61208-218-9

Location: Nice, France

Dates: from July 22, 2012 to July 27, 2012

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