A novel deep-learning model based on τ-shaped convolutional network (τNet) with long short-term memory (LSTM) for physiological fatigue detection from EEG and EOG signals

AbstractIn recent years, fatigue driving has become the main cause of traffic accidents, leading to increased attention towards fatigue detection systems. However, the pooling and strided convolutional operations in fatigue detection algorithm based on traditional deep learning methods may led to the loss of some useful information. This paper proposed a novel\(\uptau\)-shaped convolutional network (\(\mathrm{\tau Net}\)) aiming to address this issue. Unlike traditional network structures,\(\mathrm{\tau Net}\) incorporates the operations of upsampling features and concatenating high- and low-level features, enabling full utilization of useful information. Moreover, considering that the fatigue state is a mental state involving temporal evolution, we proposed the novel long short-term memory (LSTM) –\(\uptau\)-shaped convolutional network (LSTM-\(\mathrm{\tau Net}\)), a parallel structure composed of LSTM and\(\mathrm{\tau Net}\) for fatigue detection, where\(\mathrm{\tau Net}\) extracts time-invariant features with location information, and LSTM extracts long temporal dependencies. We compared LSTM-\(\mathrm{\tau Net}\) with six competing methods based on two datasets. Results showed that the proposed algorithm achieved higher classification accuracy than the other methods, with 94.25% on EEG data (binary classification) and 82.19% on EOG data (triple classification). Additionally, the proposed algorithm exhibits low computational cost, good training stability, and robustne...
Source: Medical and Biological Engineering and Computing - Category: Biomedical Engineering Source Type: research