Classification of EEG signals based on imaginary movement of right and left hand wrist

Author(s):  
Mosarrat Jahan ◽  
Yusuf Uzzaman Khan ◽  
Bharat Bhushan Sharma
Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2854 ◽  
Author(s):  
Kwon-Woo Ha ◽  
Jin-Woo Jeong

Various convolutional neural network (CNN)-based approaches have been recently proposed to improve the performance of motor imagery based-brain-computer interfaces (BCIs). However, the classification accuracy of CNNs is compromised when target data are distorted. Specifically for motor imagery electroencephalogram (EEG), the measured signals, even from the same person, are not consistent and can be significantly distorted. To overcome these limitations, we propose to apply a capsule network (CapsNet) for learning various properties of EEG signals, thereby achieving better and more robust performance than previous CNN methods. The proposed CapsNet-based framework classifies the two-class motor imagery, namely right-hand and left-hand movements. The motor imagery EEG signals are first transformed into 2D images using the short-time Fourier transform (STFT) algorithm and then used for training and testing the capsule network. The performance of the proposed framework was evaluated on the BCI competition IV 2b dataset. The proposed framework outperformed state-of-the-art CNN-based methods and various conventional machine learning approaches. The experimental results demonstrate the feasibility of the proposed approach for classification of motor imagery EEG signals.


AI & Society ◽  
2017 ◽  
Vol 33 (4) ◽  
pp. 621-629 ◽  
Author(s):  
Rihab Bousseta ◽  
Salma Tayeb ◽  
Issam El Ouakouak ◽  
Mourad Gharbi ◽  
Fakhita Regragui ◽  
...  

Africa ◽  
1961 ◽  
Vol 31 (3) ◽  
pp. 250-257 ◽  
Author(s):  
T. O. Beidelman

Opening ParagraphThis paper presents the general features of dualistic symbolic classification among the Kaguru, a Bantu people of east-central Tanganyika, East Africa.It has been written as a result of my reading Needham's stimulating article, ‘The Left Hand of the Mugwe’, which recently appeared in Africa. Using Bernardi's ethnographic data on the Meru, Needham isolates a dualistic symbolic classification of those people. The result is a very striking illustration of the order and understanding gained by the social anthropologist once this important feature of Meru ideology is shown. Needham then goes on to indicate some of the relations which such a symbolic classification may have to certain structural divisions of a society.


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