Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults

Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults

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Background: Quantitative Electroencephalography (qEEG) is a non-invasive method used to quantify electrical activity over the cortex.QEEG provides an accurate temporal resolution of the brain activity, making it a useful tool for assessing cortical function during challenging tasks.Objective: This study aimed Spades to investigate postural adjustments in older adults in response to an external perturbation.

Material and Methods: In this observational study, nineteen healthy older adults were involved.A 32-channel qEEG was employed to track alterations in beta power on the electrodes over the two sensory-motor areas.Integrated electromyographic activity (IntEMG) of the leg muscles was evaluated in response to perturbations under predictable and unpredictable conditions.

Results: The results indicated higher beta power during late-phase in the Cz electrode in both conditions.IntEMG was significantly greater in the tibialis anterior muscle during both conditions in the CPA epoch.In predictable condition, a positive correlation was found between the beta power over C4 (r = 0.

560, p = 0.013) and C3 (r = 0.458, p = 0.

048) electrodes and tibialis anterior muscle amplitude, and between beta power in C4 and gastrocnemius amplitude (r = 0.525, p = 0.021).

In unpredictable condition, there was a positive correlation between beta power over the C4 and the tibialis anterior amplitude (r = 0.580, Evaporator Fan Motor Cover p = 0.009) and also it over the C3 and the tibialis anterior amplitude (r = 0.

452, p = 0.049).Conclusion: Our findings demonstrate that sensorimotor processing occurs in the brain during response to perturbation.

Furthermore, cortical activity appeared to be greatest during the recruitment of the muscles upon late-phase in older adults.