Title
An Efficient LSTM Network for Emotion Recognition From Multichannel EEG Signals
Abstract
Most previous EEG-based emotion recognition methods studied hand-crafted EEG features extracted from different electrodes. In this article, we study the relation among different EEG electrodes and propose a deep learning method to automatically extract the spatial features that characterize the functional relation between EEG signals at different electrodes. Our proposed deep model is called <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">AT</b> tention-based <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LSTM</b> with <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">D</b> omain <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">D</b> iscriminator (ATDD-LSTM), a model based on Long Short-Term Memory (LSTM) for emotion recognition that can characterize nonlinear relations among EEG signals of different electrodes. To achieve state-of-the-art emotion recognition performance, the architecture of ATDD-LSTM has two distinguishing characteristics: (1) By applying the attention mechanism to the feature vectors produced by LSTM, ATDD-LSTM automatically selects suitable EEG channels for emotion recognition, which makes the learned model concentrate on the emotion related channels in response to a given emotion; (2) To minimize the significant feature distribution shift between different sessions and/or subjects, ATDD-LSTM uses a domain discriminator to modify the data representation space and generate domain-invariant features. We evaluate the proposed ATDD-LSTM model on three public EEG emotional databases (DEAP, SEED and CMEED) for emotion recognition. The experimental results demonstrate that our ATDD-LSTM model achieves superior performance on subject-dependent (for the same subject), subject-independent (for different subjects) and cross-session (for the same subject) evaluation.
Year
DOI
Venue
2022
10.1109/TAFFC.2020.3013711
IEEE Transactions on Affective Computing
Keywords
DocType
Volume
Emotion recognition,multichannel EEG,LSTM,attention mechanism,domain adaptation
Journal
13
Issue
ISSN
Citations 
3
1949-3045
1
PageRank 
References 
Authors
0.36
24
9
Name
Order
Citations
PageRank
Xiaobing Du110.70
Cuixia Ma215415.79
Guanhua Zhang310.36
Jinyao Li410.36
Yu-Kun Lai5102580.48
Guozhen Zhao610.70
Xiaoming Deng7687.59
Yong-Jin Liu883772.83
Hongan Wang964279.77