1. Effects of minimally invasive tangential excision in treating deep partial-thickness burn wounds on trunk and limbs in pediatric patients in the early stage post burn
Feng LI ; Yunfei CHI ; Quan HU ; Huinan YIN ; Wei LIU ; Qi CHEN ; Qinxue ZHANG ; Xin CHEN ; Feichao CAO ; Zhanling LIANG ; Yingjie SUN
Chinese Journal of Burns 2018;34(10):714-718
Objective:
To observe the effects of minimally invasive tangential excision in treating deep partial-thickness burn wounds on trunk and limbs in pediatric patients in the early stage post burn.
Methods:
Clinical data of 40 children with deep partial-thickness burn wounds on trunk and limbs, admitted to our burn ward from January 2016 to June 2017, conforming to the study criteria, were retrospectively analyzed. They were divided into conventional treatment group (CT,
2.Motor imagery electroencephalogram classification based on sparse spatiotemporal decomposition and channel attention.
Hongli LI ; Feichao YIN ; Ronghua ZHANG ; Xin MA ; Hongyu CHEN
Journal of Biomedical Engineering 2022;39(3):488-497
Motor imagery electroencephalogram (EEG) signals are non-stationary time series with a low signal-to-noise ratio. Therefore, the single-channel EEG analysis method is difficult to effectively describe the interaction characteristics between multi-channel signals. This paper proposed a deep learning network model based on the multi-channel attention mechanism. First, we performed time-frequency sparse decomposition on the pre-processed data, which enhanced the difference of time-frequency characteristics of EEG signals. Then we used the attention module to map the data in time and space so that the model could make full use of the data characteristics of different channels of EEG signals. Finally, the improved time-convolution network (TCN) was used for feature fusion and classification. The BCI competition IV-2a data set was used to verify the proposed algorithm. The experimental results showed that the proposed algorithm could effectively improve the classification accuracy of motor imagination EEG signals, which achieved an average accuracy of 83.03% for 9 subjects. Compared with the existing methods, the classification accuracy of EEG signals was improved. With the enhanced difference features between different motor imagery EEG data, the proposed method is important for the study of improving classifier performance.
Algorithms
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Brain-Computer Interfaces
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Electroencephalography/methods*
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Humans
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Imagery, Psychotherapy
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Imagination