EEG, quantitative EEG, BAEP and ERP in centenarians

Area of Science:

• Neuroscience
• Gerontology
• Biomedical Engineering

Background:

• Aging is associated with cognitive and neurological changes.
• Understanding electrophysiological markers in centenarians is crucial for aging research.
• Previous studies on brain activity in extreme longevity are limited.

Purpose of the Study:

• To investigate electroencephalography (EEG) and quantitative EEG (qEEG) characteristics in healthy centenarians.
• To assess Brainstem Auditory Evoked Potentials (BAEP) and Event-Related Potentials (ERP) in this population.
• To identify age-related electrophysiological changes associated with extreme longevity.

Main Methods:

• Electroencephalography (EEG) and quantitative EEG (qEEG) were performed on 11 healthy centenarians.
• Brainstem Auditory Evoked Potentials (BAEP) and Event-Related Potentials (ERP) were measured in 6 participants.
• Analysis focused on background frequency, power, regional differences, and latencies of specific EEG/ERP components.

Main Results:

• Centenarians exhibited slower background EEG frequencies and lower power compared to younger adults.
• qEEG showed higher posterior than anterior activity, unlike standard EEG.
• Prolonged latencies were observed in endogenous ERP components (N200, P300), while exogenous components remained normal.

Conclusions:

• Healthy centenarians display distinct EEG and qEEG patterns, characterized by slower background activity and regional power distribution.
• Electrophysiological findings suggest age-related alterations in neural processing, particularly in endogenous cognitive functions.
• These findings contribute to understanding the neurophysiology of healthy aging and extreme longevity.