Analysis of Electroencephalography Signals on the Contents of Cognitive Function Game: Attention and Memory

2020 ◽  
Vol 10 (6) ◽  
pp. 1452-1458
Author(s):  
Sung-Wook Shin ◽  
Jung-Hyun Park ◽  
Woo-Jin Lee ◽  
Sung-Ho Kang ◽  
Hyunggun Kim ◽  
...  

In the current study, contents of cognitive function game were developed, and variations in Electroencephalography signals were measured and compared before performing the game tasks and during performing the game. The study sought to assess how much the game contents activated brain to see if they were suitable for cognitive functional training. For Electroencephalography signal analysis, power spectral analysis was implemented to classify signals according to frequency. To test signal variation according to the degree of brain activation before and after performing the game, variation comparison and paired t-test were conducted. Results showed that there was reduction in α wave signaling which implied that the subjects concentrate on the content, and increase in β wave signifying that they were engaged in cognitive activities such as remembering and assessing. Consequentially, the produced contents in this study are expected to be useful for cognitive functional training.

2005 ◽  
Vol 48 (2) ◽  
pp. 182
Author(s):  
Gyu Sam Hwang ◽  
In Young Huh ◽  
Su Jin Kang ◽  
Mi Ok Youn ◽  
Won Jung Shin ◽  
...  

2012 ◽  
Vol 4 (6) ◽  
pp. 330-333 ◽  
Author(s):  
Yung-Ting Kuo ◽  
Ying-Tzu Chen ◽  
Geng-Chang Yeh ◽  
Hsiao-Feng Chou ◽  
Chuan-Yu Wang ◽  
...  

SLEEP ◽  
2022 ◽  
Author(s):  
Angela L D’Rozario ◽  
Camilla M Hoyos ◽  
Keith K H Wong ◽  
Gunnar Unger ◽  
Jong Won Kim ◽  
...  

Abstract Study Objectives Untreated obstructive sleep apnea (OSA) is associated with cognitive deficits and altered brain electrophysiology. We evaluated the effect of continuous positive airway pressure (CPAP) treatment on quantitative sleep electroencephalogram (EEG) measures and cognitive function. Methods We studied 162 OSA patients (age 50±13, AHI 35.0±26.8) before and after 6 months of CPAP. Cognitive tests assessed working memory, sustained attention, visuospatial scanning and executive function. All participants underwent overnight polysomnography at baseline and after CPAP. Power spectral analysis was performed on EEG data (C3-M2) in a sub-set of 90 participants. Relative delta EEG power and sigma power in NREM and EEG slowing in REM were calculated. Spindle densities (events p/min) in N2 were also derived using automated spindle event detection. All outcomes were analysed as change from baseline. Results Cognitive function across all cognitive domains improved after six months of CPAP. In our sub-set, increased relative delta power (p<0.0001) and reduced sigma power (p=0.001) during NREM were observed after the 6-month treatment period. Overall, fast and slow sleep spindle densities during N2 were increased after treatment. Conclusions Cognitive performance was improved and sleep EEG features were enhanced when assessing the effects of CPAP. These findings suggest the reversibility of cognitive deficits and altered brain electrophysiology observed in untreated OSA following six months of treatment.


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