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Decoding human taste perception by reconstructing and mining temporal-spatial features of taste-related EEGs

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Abstract

For humans, taste is essential for perceiving the nutrient content or harmful components of food. The current method of taste sensory evaluation relies on artificial sensory evaluation and an electronic tongue. The former has strong subjectivity and poor repeatability, and the latter is not sufficiently flexible. To decode people's objective taste perception, a strategy for acquiring and recognizing four classes (sour, sweet, bitter, and salty) in taste-related electroencephalograms (EEGs) was proposed. First, according to the proposed experimental paradigm, the taste-related EEGs of subjects under different taste stimulations were collected. Second, to avoid insufficient training of the model due to the small number of EEG samples, a temporal and spatial reconstruction data augmentation (TSRDA) method was proposed, effectively augmenting taste-related EEGs by reconstructing the important features in temporal and spatial dimensions. Third, a multiview channel attention (MVCA) module was introduced into a designed convolutional neural network to extract the important features of the augmented EEG. The proposed method had an accuracy of 99.56%, F1 score of 99.48%, and kappa value of 99.38%, showing the method's ability to successfully decoded sour, sweet, bitter, and salty EEG signals. In conclusion, combining TSRDA with EEG technology provides an objective and effective method for the sensory evaluation of food taste.

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Data availability

The datasets generated during and/or analysed during the current study are not publicly available due to privacy but are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported in part by the Science and Technology Development Plan of Jilin Province under Grant YDZJ202101ZYTS135.

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Conceptualization: Xiuxin Xia; Methodology: Xiuxin Xia; Formal analysis and investigation: Xiuxin Xia, Yuchao Yang, Yan Shi; Writing—original draft preparation: Xiuxin Xia; Writing—review and editing: Xiuxin Xia; Funding acquisition: Hong Men; Resources: Yuchao Yang, Wenbo Zheng; Supervision: Hong Men.

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Correspondence to Hong Men.

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There was no potential conflicts of interest in the research. The research was in line with the revised Declaration of Helsinki, and the protocol had been approved by the Northeast Electric Power University Scientific Research Ethics and Science and Technology Safety and Committee. The subjects all signed the informed consent form.

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Xia, X., Yang, Y., Shi, Y. et al. Decoding human taste perception by reconstructing and mining temporal-spatial features of taste-related EEGs. Appl Intell 54, 3902–3917 (2024). https://doi.org/10.1007/s10489-024-05374-5

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