Aging and Degenerative Disorders
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Cerebral aging is associated with characteristic changes of main EEG patterns recorded during wakefulness and sleep. They include a slowing of posterior dominant rhythm, the reduction of beta activity, and the appearance of theta-delta activities particularly over left and temporal regions. With the exception of frontotemporal dementia, there is usually a good correlation between the degree of cognitive impairment in dementia syndromes and the EEG changes. In multi-infarct dementia, the presence of focal and/or epileptiform discharges depends on the location and size of infarcts. In Parkinson’s disease the EEG changes are usually nonspecific.
KeywordsAlzheimer’s dementia Cognitive impairment Dementia Differential diagnosis Elderly Vascular dementia
- 1.Babiloni C, Del Percio C, Buján A. EEG in dementing disorders. In: Schomer DL, Lopes da Silva F, editors. Niedermeyer’s electroencephalography: basic principles, clinical applications, and related fields. 7th ed. New York, NY: Oxford University Press; 2018. p. 413–32.Google Scholar