scholarly journals Cortical Source Multivariate EEG Synchronization Analysis on Amnestic Mild Cognitive Impairment in Type 2 Diabetes

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Dong Cui ◽  
Jing Liu ◽  
Zhijie Bian ◽  
Qiuli Li ◽  
Lei Wang ◽  
...  

Is synchronization altered in amnestic mild cognitive impairment (aMCI) and normal cognitive functions subjects in type 2 diabetes mellitus (T2DM)? Resting eye-closed EEG data were recorded in 8 aMCI subjects and 11 age-matched controls in T2DM. Three multivariate synchronization algorithms (S-estimator (S), synchronization index (SI), and global synchronization index (GSI)) were used to measure the synchronization in five ROIs of sLORETA sources for seven bands. Results showed that aMCI group had lower synchronization values than control groups in parietal delta and beta2 bands, temporal delta and beta2 bands, and occipital theta and beta2 bands significantly. Temporal (r=0.629;P=0.004) and occipital (r=0.648;P=0.003) thetaSvalues were significantly positive correlated with Boston Name Testing. In sum, each of methods reflected that the cortical source synchronization was significantly different between aMCI and control group, and these difference correlated with cognitive functions.

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
N H Elshamy ◽  
I I Salama ◽  
M S Gabal ◽  
A M Hassan ◽  
G A Abdellatif

Abstract Objective The incidence of mild cognitive impairment increases with age, so this study is conducted to assess the relation between mild cognitive impairment and type 2 diabetes. Methods 100 type 2 diabetic patients attending Zagazig University outpatient clinics with age range from 40-60 years old was included in the study. These patients were matched with 100 non-diabetic controls regarding age, sex and educational class. Patients with important risk factors for cognitive disorders (cerebro-vascular stroke, organ failure, mental disorders, etc.) were not included in the study. Montreal cognitive assessment (MoCA) was done for all participants by an expert examiner using MoCA tool. Results Mild cognitive impairment was confirmed in 22% of diabetic patients and in 9% of control group (p < 0.05) with total MoCA score lower in diabetic group than control one (p < 0.01). Conclusion Type 2 diabetes may be associated with lower levels of cognitive function.


2020 ◽  
Vol 9 (7) ◽  
pp. 2055
Author(s):  
Silvia Valenza ◽  
Lucia Paciaroni ◽  
Susy Paolini ◽  
Anna Rita Bonfigli ◽  
Mirko Di Rosa ◽  
...  

Background: Type 2 diabetes (T2D) is correlated to amnestic mild cognitive impairment (aMCI) and to non-amnestic mild cognitive impairment (naMCI). This study evaluated whether the T2D variable characterizes a peculiar cognitive profile in elderly patients. Moreover, it explores the association between glycated hemoglobin levels (HbA1c), T2D duration, insulin and oral hypoglycemic agent treatment, and cognition in elderly diabetic patients. Methods: Detailed neuropsychological battery was used to diagnose MCI subtypes. A total of 39 MCI subjects with T2D (T2D-MCI) and 37 MCI subjects without T2D (ND-MCI), matched for age, educational level, and Mini-Mental State Examination score, were included. Results: ND-MCI performed worse in memory and language domains than T2D-MCI. The amnestic subtype is more frequent among ND-MCI and non-amnestic subtype in T2D-MCI. In T2D-MCI, high HbA1c levels correlate with episodic memory (immediate recall) and T2D duration. Some indexes of episodic memory (immediate recall), attention, and visual-spatial ability correlate with insulin treatment. Conclusions: An association between T2D and non-amnestic MCI is suggested. In the T2D-MCI group, significant associations between insulin treatment and memory (immediate recall), complex figure copy, and attention were found.


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