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Brain Waves

Brain Waves

Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:

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Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke

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Electroencephalogram associations to cognitive performance in clinically active nurses.

Ty Lees¹, Rami Khushaba, Sara Lal

¹Neuroscience Research Unit, School of Life Sciences, University of Technology, Sydney PO Box 123, Broadway NSW 2007, Australia.

Physiological Measurement

|June 1, 2016

Summary

Electroencephalogram (EEG) beta activity shows promise for detecting cognitive performance changes. Increased beta activity correlated with better cognitive function in nurses, suggesting potential EEG biomarkers for early cognitive health assessment.

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Area of Science:

Neuroscience
Cognitive Science
Biomarkers

Background:

Traditional cognitive screening tools struggle with early impairment detection.
Electroencephalogram (EEG) dynamics offer potential for identifying cognitive transitions.
Limited research exists on EEG in non-impaired, occupation-specific populations.

Purpose of the Study:

To investigate associations between frontal pole and central EEG activity and cognitive performance in nurses.
To determine the significance of these EEG-cognitive performance relationships.
To explore potential EEG biomarkers for cognitive health.

Main Methods:

Fifty-seven nurses underwent EEG recording (Fp1, Fp2, C3, C4) during a Stroop test.
Cognitive performance assessed using Mini-Mental State Exam (MMSE) and Cognistat.
Correlations analyzed between EEG beta activity and cognitive outcomes.

Main Results:

Significant positive correlations found between EEG beta activity and global cognitive performance (MMSE, Cognistat).
Domain-specific cognitive performance also showed significant associations with various EEG variables.
Increased beta activity linked to enhanced global cognitive function.

Conclusions:

EEG beta activity may serve as a potential biomarker for global cognitive performance.
Identified potential EEG biomarkers for domain-specific cognitive functions.
Provides foundational research for developing EEG-based biomarkers for cognitive pathologies.