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Saadat, Zahra, Pirouzi, Soraya, Nami, Mohammad, Rojhani-Shirazi, Zahra. (1401). Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults. سامانه مدیریت نشریات علمی, 12(3), 257-266.
Zahra Saadat; Soraya Pirouzi; Mohammad Nami; Zahra Rojhani-Shirazi. "Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults". سامانه مدیریت نشریات علمی, 12, 3, 1401, 257-266.
Saadat, Zahra, Pirouzi, Soraya, Nami, Mohammad, Rojhani-Shirazi, Zahra. (1401). 'Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults', سامانه مدیریت نشریات علمی, 12(3), pp. 257-266.
Saadat, Zahra, Pirouzi, Soraya, Nami, Mohammad, Rojhani-Shirazi, Zahra. Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults. سامانه مدیریت نشریات علمی, 1401; 12(3): 257-266.

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

Journal of Biomedical Physics and Engineering
مقاله 5، دوره 12، شماره 3، شهریور 2022، صفحه 257-266    اصل مقاله (737.67 K)
نوع مقاله: Original Research
نویسندگان
Zahra Saadat1؛ Soraya Pirouzi2؛ Mohammad Nami3، 4؛ Zahra Rojhani-Shirazi* 2، 5
1PhD Candidate, Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
2PhD, Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
3MD, PhD, Neuroscience Laboratory (Brain, Cognition and Behavior), Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
4MD, PhD, Neuroscience Center, Instituto de Investigaciones Científicasy Servicios De Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama City, Republic of Panama
5PhD, Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
چکیده
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 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, 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.
کلیدواژه‌ها
Electroencephalography؛ Brain Activity؛ Electromyography؛ Posture
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