Steady-state visual evoked potential based brain-computer interface with viewing distance changes

Hee Jin Park, Keun Tae Kim, Seong Whan Lee

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

Abstract

In the Brain-Computer Interface (BCI) based on Steady-State Visual Evoked Potential (SSVEP), the viewing distance is usually fixed in the 1 m. However, the performance of SSVEP was decreased when the viewing distance is increasing. This paper aims to investigate the effects of viewing distance variation to the SSVEP. We designed an experimental environment with different viewing distance and generated four visual flicker which presented on LED monitor flickering in frequencies of 7, 8, 9, and 10 Hz. The Canonical correlation analysis (CCA) and event related spectral perturbation (ERSP) methods were used to analyze the frequency information of the acquired SSVEP signals. Our results show that the latencies of SSVEP were increased according to the viewing distances and visual angles. Therefore, we used phase constrained canonical correlation analysis (pCCA) to reflect the latency in viewing distance changes. As a result, the accuracy obtained from pCCA was higher than standard CCA method.

Original languageEnglish
Title of host publication4th International Winter Conference on Brain-Computer Interface, BCI 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467378413
DOIs
Publication statusPublished - 2016 Apr 20
Event4th International Winter Conference on Brain-Computer Interface, BCI 2016 - Gangwon Province, Korea, Republic of
Duration: 2016 Feb 222016 Feb 24

Publication series

Name4th International Winter Conference on Brain-Computer Interface, BCI 2016

Other

Other4th International Winter Conference on Brain-Computer Interface, BCI 2016
Country/TerritoryKorea, Republic of
CityGangwon Province
Period16/2/2216/2/24

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

  • Computer Interface
  • Steady-State Visual Evoked Potential
  • Viewing Distance

ASJC Scopus subject areas

  • Human-Computer Interaction

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