Does the Brain Rest?: An Independent Component Analysis of Temporally Coherent Brain Networks at Rest and During a Cognitive Task

Author(s):  
Vince D. Calhoun
NeuroImage ◽  
2021 ◽  
pp. 118167
Author(s):  
Xiaotian T. Fang ◽  
Takuya Toyonaga ◽  
Ansel T. Hillmer ◽  
David Matuskey ◽  
Sophie E. Holmes ◽  
...  

NeuroImage ◽  
2015 ◽  
Vol 110 ◽  
pp. 182-193 ◽  
Author(s):  
Diana López-Barroso ◽  
Pablo Ripollés ◽  
Josep Marco-Pallarés ◽  
Bahram Mohammadi ◽  
Thomas F. Münte ◽  
...  

2009 ◽  
Author(s):  
S. M. Rolfe ◽  
L. Finney ◽  
R. F. Tungaraza ◽  
J. Guan ◽  
L. G. Shapiro ◽  
...  

2019 ◽  
Vol 15 (1) ◽  
pp. 13-27
Author(s):  
Zaineb Alhakeem ◽  
Ramzy Ali

Training the user in Brain-Computer Interface (BCI) systems based on brain signals that recorded using Electroencephalography Motor Imagery (EEG-MI) signal is a time-consuming process and causes tiredness to the trained subject, so transfer learning (subject to subject or session to session) is very useful methods of training that will decrease the number of recorded training trials for the target subject. To record the brain signals, channels or electrodes are used. Increasing channels could increase the classification accuracy but this solution costs a lot of money and there are no guarantees of high classification accuracy. This paper introduces a transfer learning method using only two channels and a few training trials for both feature extraction and classifier training. Our results show that the proposed method Independent Component Analysis with Regularized Common Spatial Pattern (ICA-RCSP) will produce about 70% accuracy for the session to session transfer learning using few training trails. When the proposed method used for transfer subject to subject the accuracy was lower than that for session to session but it still better than other methods.


Author(s):  
Shaik Basheera ◽  
M. Satya Sai Ram

Medical segmentation is the primary task performed to diagnosis the abnormalities in the human body. The brain is the complex organ and anatomical segmentation of brain tissues is a challenging task. In this paper, we used Enhanced Independent component analysis to perform the segmentation of gray matter. We used modified K means, Expected Maximization and Hidden Markov random field to provide better spatial correlation that overcomes in-homogeneity, noise and low contrast. Our objective is achieved in two steps (i) initially unwanted tissues are clipped from the MRI image using skull stripped Algorithm (ii) Enhanced Independent Component analysis is used to perform the segmentation of gray matter. We apply the proposed method on both T1w and T2w MRI to perform segmentation of gray matter at different noisy environments. We evaluate the the performance of our proposed system with Jaccard Index, Dice Coefficient and Accuracy. We further compared the proposed system performance with the existing frameworks. Our proposed method gives better segmentation of gray matter useful for diagnosis neurodegenerative disorders.


2017 ◽  
Vol 11 ◽  
Author(s):  
Dusica Bajic ◽  
Michael M. Craig ◽  
Chandler R. L. Mongerson ◽  
David Borsook ◽  
Lino Becerra

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