Papers › Mental Task Classification Using Electroencephalogram Signal

Mental Task Classification Using Electroencephalogram Signal

2 Oct 2019arXiv:1910.03023archive 2025-07-28

Zeyu Bai, Ruizhi Yang, Youzhi Liang

This paper studies the classification problem on electroencephalogram (EEG) data of mental tasks, using standard architecture of three-layer CNN, stacked LSTM, stacked GRU. We further propose a novel classifier - a mixed LSTM model with a CNN decoder. A hyperparameter optimization on CNN shows validation accuracy of 72% and testing accuracy of 62%. The stacked LSTM and GRU models with FFT preprocessing and downsampling on data achieve 55% and 51% testing accuracy respectively. As for the mixed LSTM model with CNN decoder, validation accuracy of 75% and testing accuracy of 70% are obtained. We believe the mixed model is more robust and accurate than both CNN and LSTM individually, by using the CNN layer as a decoder for following LSTM layers. The code is completed in the framework of Pytorch and Keras. Results and code can be found at https://github.com/theyou21/BigProject.

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Tasks

ClassificationDecoderEEGElectroencephalogram (EEG)General ClassificationHyperparameter Optimization

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GRULSTMSigmoid ActivationTanh Activation

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