High-resolution SSVEP-based brain–computer interface

Abstract

Steady-state visual evoked potential based brain–computer interface (BCI) is now attracting growing attention for its fast and efficient information transfer rate. However, human beings show excellent response only in a limited range of frequencies. Due to the limitation of frequency bandwidth, it is difficult to obtain enough frequency for target encoding. This study presents a high-resolution steady-state visual evoked BCI whose frequency resolution reaches 0.1 Hz. Compared with the widely-used system with frequency resolution of 0.2 Hz, this system have doubled the number of evoked frequencies, and increased the information transfer rate by 27.89% when sampling time is >3 s.

Keywords

• electroencephalography
• visual evoked potentials
• medical signal processing
• brain-computer interfaces
• fast information transfer rate
• frequency bandwidth
• high-resolution steady-state visual evoked bci
• frequency resolution
• evoked frequencies
• steady-state visual evoked potential based brain-computer interface
• high-resolution ssvep-based brain-computer interface
• frequency 0.2 hz
• frequency 0.1 hz