Topography of the maximum of the amplitude of EEG frequency bands in dementia of the Alzheimer type

被引：41

作者：

Ihl, R ^{[1
]}

Dierks, T ^{[1
]}

Martin, EM ^{[1
]}

Frolich, L ^{[1
]}

Maurer, K ^{[1
]}

机构：

[1] UNIV WURZBURG,DEPT PSYCHIAT,W-8700 WURZBURG,GERMANY

来源：

BIOLOGICAL PSYCHIATRY | 1996年 / 39卷 / 05期

关键词：

dementia; Alzheimer's disease; electroencephalogram (EEG); Brief Cognitive Rating Scale (BCRS); test; beta rhythm;

D O I：

10.1016/0006-3223(95)00174-3

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The localization of the maxima of activity of 36 patients with dementia of the Alzheimer type and 36 age-matched controls was calculated after Fourier transformation of EEG data in six frequency bands (4 Hz steps between 1 and 24 Hz). Patients were divided into three groups of severity (BCRS mean <3.9, 4.0-4.9, and >4.9). Significant differences were found in the beta frequency band. In the distribution of the maxima of the activity, the maxima of patients were located more frontally than the maxima of controls. The alterations were stage dependent, The beta activity in EEG is said to be correlated with cognitive processes; the correlation between cognitive decline and decreasing beta activity in dementia of the Alzheimer type might support this assumption. Differences in the location of the maxima between patients and controls might allow for differentiation between both groups.

引用

页码：319 / 325

页数：7

共 30 条

[1] The electron-cephalogram of humans - Third announcement [J].