Multi-subject subspace alignment for non-stationary EEG-based emotion recognition

Technology and Health Care : Official Journal of the European Society for Engineering and Medicine
Xin ChaiOu Bai

Abstract

Emotion recognition based on EEG signals is a critical component in Human-Machine collaborative environments and psychiatric health diagnoses. However, EEG patterns have been found to vary across subjects due to user fatigue, different electrode placements, and varying impedances, etc. This problem renders the performance of EEG-based emotion recognition highly specific to subjects, requiring time-consuming individual calibration sessions to adapt an emotion recognition system to new subjects. Recently, domain adaptation (DA) strategies have achieved a great deal success in dealing with inter-subject adaptation. However, most of them can only adapt one subject to another subject, which limits their applicability in real-world scenarios. To alleviate this issue, a novel unsupervised DA strategy called Multi-Subject Subspace Alignment (MSSA) is proposed in this paper, which takes advantage of subspace alignment solution and multi-subject information in a unified framework to build personalized models without user-specific labeled data. Experiments on a public EEG dataset known as SEED verify the effectiveness and superiority of MSSA over other state of the art methods for dealing with multi-subject scenarios.

References

Jun 24, 2006·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Anna ButtfieldJosé del R Millán
Feb 23, 2010·IEEE Transactions on Bio-medical Engineering·Yan LiMasashi Sugiyama
Nov 26, 2010·IEEE Transactions on Neural Networks·Sinno Jialin PanQiang Yang

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Methods Mentioned

BETA
feature extraction

Software Mentioned

MSSA
Matlab

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