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Brain Cortical Activation During Imagining of the Wrist Movement Using Functional Near Infrared Spectroscopy (Fnirs) Publisher



Jalalvandi M1 ; Alam NR1, 2 ; Sharini H3 ; Hashemi H4, 5 ; Nadimi M1
Authors
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Authors Affiliations
  1. 1. Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
  2. 2. Medical Pharmaceutical Sciences Research Centre (MPRC), The Institute of Pharmaceutical Sciences, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Medical Physics and Biomedical Engineering, School of Medicine, Kermanshah University of Medical Sciences (KUMS), Kermanshah, Iran
  4. 4. Department of Radiol-ogy, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
  5. 5. Advanced Diagnostic and Interventional Radiology Research Research Centre (ADIR), Tehran University of Medical Sciences (TUMS), Tehran, Iran

Source: Journal of Biomedical Physics and Engineering Published:2021


Abstract

Background: fNIRS is a useful tool designed to record the changes in the density of blood’s oxygenated hemoglobin (oxyHb) and deoxygenated hemoglobin (deoxyHb) molecules during brain activity. This method has made it possible to evaluate the hemodynamic changes of the brain during neuronal activity in a completely non-aggres-sive manner. Objective: The present study has been designed to investigate and evaluate the brain cortex activities during imagining of the execution of wrist motor tasks by comparing fMRI and fNIRS imaging methods. Material and Methods: This novel observational Optical Imaging study aims to investigate the brain motor cortex activity during imagining of the right wrist motor tasks in vertical and horizontal directions. To perform the study, ten healthy young right-handed volunteers were asked to think about right-hand movements in different directions according to the designed movement patterns. The required data were col-lected in two wavelengths, including 845 and 763 nanometers using a 48 channeled fNIRS machine. Results: Analysis of the obtained data showed the brain activity patterns during imagining of the execution of a movement are formed in various points of the motor cortex in terms of location. Moreover, depending on the direction of the movement, activity plans have distinguishable patterns. The results showed contralateral M1 was mainly activated during imagining of the motor cortex (p<0.05). Conclusion: The results of our study showed that in brain imaging, it is possible to distinguish between patterns of activities during wrist motion in different directions using the recorded signals obtained through near-infrared Spectroscopy. The findings of this study can be useful in further studies related to movement control and BCI. © 2021, Shriaz University of Medical Sciences. All rights reserved.
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1. Assessment of Brain Cortical Activation in Passive Movement During Wrist Task Using Functional Near Infrared Spectroscopy (Fnirs), Frontiers in Biomedical Technologies (2019)
2. Deciphering Brain Activation During Wrist Movements: Comparative Fmri and Fnirs Analysis of Active, Passive, and Imagery States, Experimental Brain Research (2025)