The cognitive triad network - oscillation - behaviour links individual differences in EEG theta frequency with task...

Area of Science:

• Cognitive Neuroscience
• Network Neuroscience
• Neuroimaging

Background:

• The relationship between brain structure, function, and behavior is a key area of research.
• Oscillatory brain processes, specifically EEG frequency, are increasingly recognized for their role in behavioral performance.

Purpose of the Study:

• To investigate the interconnectedness of behavioral performance, electroencephalography (EEG) oscillation frequency, and brain network connectivity at the individual level.
• To reconcile findings from research on brain architecture and oscillatory processes in relation to behavior.

Main Methods:

• Recruited young and old healthy adults to capture performance variations.
• Utilized an auditory inhibitory control task to measure behavioral performance.
• Analyzed EEG frontal theta frequency and its correlation with task performance and network connectivity.

Main Results:

• Task performance significantly correlated with individual EEG frontal theta frequency.
• Older adults exhibited slower theta frequencies compared to younger adults.
• Both theta frequency and task performance were linked to the strength of specific network connections involved in inhibitory control and speech processing.

Conclusions:

• Task-specific functional networks and induced oscillation frequencies are inseparable and reflect individual differences.
• These findings establish a direct link between brain structure, function, and behavior in healthy aging and potentially in disease.
• Network neuroscience principles are supported by the tight coupling of behavior, EEG oscillations, and network connectivity.