Steady-State Visual Evoked Potential Classification Using Complex Valued Convolutional Neural Networks

Sensors

Yoshikazu Washizawa¹  Akira Ikeda¹ 

[1] Department of Computer and Network Engineering, The University of Electro-Communications, Tokyo 182-8585, Japan;

关键词: brain–computer interfaces (BCI);    steady-state visual evoked potential (SSVEP);    complex valued deep neural networks;   

DOI  :  10.3390/s21165309

来源: DOAJ

【 摘 要 】

The steady-state visual evoked potential (SSVEP), which is a kind of event-related potential in electroencephalograms (EEGs), has been applied to brain–computer interfaces (BCIs). SSVEP-based BCIs currently perform the best in terms of information transfer rate (ITR) among various BCI implementation methods. Canonical component analysis (CCA) or spectrum estimation, such as the Fourier transform, and their extensions have been used to extract features of SSVEPs. However, these signal extraction methods have a limitation in the available stimulation frequency; thus, the number of commands is limited. In this paper, we propose a complex valued convolutional neural network (CVCNN) to overcome the limitation of SSVEP-based BCIs. The experimental results demonstrate that the proposed method overcomes the limitation of the stimulation frequency, and it outperforms conventional SSVEP feature extraction methods.

【 授权许可】

Unknown