Memory dysfunction and vigilance: neurophysiological and psychopharmacological aspects.

Area of Science:

• Neuroscience
• Gerontology
• Pharmacology

Background:

• Aging is associated with significant changes in human brain function, particularly in electroencephalogram (EEG) patterns.
• These EEG alterations include increased delta and theta activity, decreased alpha and beta activity, and slower dominant frequencies, indicative of impaired vigilance regulation.
• Vigilance, crucial for adaptive behavior, is linked to neural activity dynamics and can be compromised in conditions like organic brain syndrome (OBS).

Purpose of the Study:

• To investigate the relationship between EEG changes, vigilance, and memory performance in aging.
• To explore the effects of various nootropic and antihypoxidotic drugs on human brain function and vigilance.
• To discuss methods for evaluating therapeutic efficacy in conditions affecting brain function.

Main Methods:

• Computer-assisted spectral analysis of electroencephalogram (EEG) to measure brain function.
• Correlation analysis between EEG parameters, clinical symptomatology of organic brain syndrome (OBS), and memory performance.
• Evaluation of drug effects (e.g., dihydroergotoxine, nicergoline, piracetam) on EEG patterns and vigilance.

Main Results:

• Aging correlates with specific EEG changes: increased delta/theta, decreased alpha/beta activity, and slower dominant frequencies, reflecting vigilance deficits.
• Impaired vigilance is significantly correlated with OBS symptoms and memory deficits.
• Elderly individuals with poorer memory exhibit slower EEG activity and reduced alpha/beta power compared to those with better memory.
• Nootropic drugs demonstrated opposing EEG changes, suggesting potential vigilance improvement.

Conclusions:

• Age-related EEG alterations are linked to reduced vigilance and memory impairment.
• Nootropic and antihypoxidotic drugs may counteract age-related brain function decline by improving vigilance.
• Further research into therapeutic interventions for age-related cognitive deficits is warranted.