摘要
In this study, a novel coding scheme for SSVEP-based BCI, which encodes visual targets with frequency and spatial information, is proposed. According to the coding scheme,
a BCI system of 16 visual targets is designed and
implemented. Additionally, to decode the information from the BCI system, we propose a decoding method based on joint CCA and QDA algorithms. We assess the performances of the BCI
and the decoding method proposed herein in terms
of their decoding accuracy and ITR. The accuracy can reach 98.15% (trial length of 5 s) and
the ITR can reach 99.13 bits/min (trial length of
1 s), demonstrating the effectiveness of the BCI
system together with the decoding method.
