TY - GEN
T1 - Steady-state visual evoked potential based brain-computer interface with viewing distance changes
AU - Park, Hee Jin
AU - Kim, Keun Tae
AU - Lee, Seong Whan
N1 - Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2015R1A2A1A05001867).
Publisher Copyright:
© 2016 IEEE.
PY - 2016/4/20
Y1 - 2016/4/20
N2 - 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.
AB - 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.
KW - Computer Interface
KW - Steady-State Visual Evoked Potential
KW - Viewing Distance
UR - http://www.scopus.com/inward/record.url?scp=84969242865&partnerID=8YFLogxK
U2 - 10.1109/IWW-BCI.2016.7457466
DO - 10.1109/IWW-BCI.2016.7457466
M3 - Conference contribution
AN - SCOPUS:84969242865
T3 - 4th International Winter Conference on Brain-Computer Interface, BCI 2016
BT - 4th International Winter Conference on Brain-Computer Interface, BCI 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Winter Conference on Brain-Computer Interface, BCI 2016
Y2 - 22 February 2016 through 24 February 2016
ER -