A Deep Neural Network approach for P300 detection-based BCI using single-channel EEG scalogram images
Abstract Brain-computer interfaces ( BCIs ) acquire electroencephalogram (EEG) signals and interpret them into a command that helps people with severe motor disabilities using single channel. The goal of BCI is to achieve a prototype that supports disabled people to develop the relevant function. Various studies have been implemented in the literature to achieve a superior design. The main novelty of the proposed P300 detection-based BCI model is associated with the usage of a single-channel. In this work, we introduced a denoising approach using the bandpass filter technique followed by the transformation of scalogram images using continuous wavelet transform. The derived images were trained and validated using a deep neural network based on the transfer learning approach. This paper presents a BCI model based on the deep network that delivers higher performance in terms of classification accuracy and bitrate for disabled subjects using a single-channel EEG signal. The proposed P300 based BCI model has the highest average information transfer rates of 13.23 to 26.48 bits/min for disabled subjects. The classification performance has shown that the deep network based on the transfer learning approach can offer comparable performance with other state-of-the-art-method. This article does not contain any studies with human participants performed by any of the authors. However, the data was collected by EPFL which is available open for the researchers to work upon.