scholarly journals Identification of abnormal motor cortex activation patterns in children with cerebral palsy by functional near-infrared spectroscopy

2010 ◽  
Vol 15 (3) ◽  
pp. 036008 ◽  
Author(s):  
Bilal Khan ◽  
Fenghua Tian ◽  
Khosrow Behbehani ◽  
Mario I. Romero ◽  
Mauricio R. Delgado ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Infrared Spectroscopy ◽  
Motor Cortex ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Functional Near Infrared Spectroscopy ◽  
Activation Patterns ◽  
Children With Cerebral Palsy ◽  
Abnormal Motor

scholarly journals Assessment of Brain Cortical Activation in Passive Movement During Wrist Task Using Functional Near Infrared Spectroscopy (fNIRS)

2019 ◽  
Author(s):  
Maziar Jalalvandi ◽  
Hamid Sharini ◽  
Yousof Naderi ◽  
Nader RiahiAlam
Keyword(s):  
Infrared Spectroscopy ◽  
Motor Cortex ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Primary Motor Cortex ◽  
Passive Movement ◽  
Cortical Activation ◽  
Movement Direction ◽  
Functional Near Infrared Spectroscopy ◽  
Activation Patterns

Purpose: Nowadays, the number of people diagnosed with movement disorders is increasing. Therefore, the evaluation of brain activity during motor task performance has attracted the attention of researchers in recent years. Functional Near-Infrared Spectroscopy (fNIRS) is a useful method that measures hemodynamic changes in the brain cortex based on optical principles. The purpose of this study was to evaluate the brain’s cortical activation in passive movement of the wrist. Materials and Methods: In current study, the activation of the brain's motor cortex during passive movement of the right wrist was investigated. To perform this study, ten healthy young right-handed volunteers were chosen. The required data were collected using a commercial 48-channel continuous wave fNIRS machine, using two different wavelengths of 765 and 855 nm at 10 Hz sampling rate. Results: Analysis of collected data showed that the brain's motor cortex during passive motion was significantly activated (p≤0.05) compared to rest. Motor cortex activation patterns depending on passive movement direction were separated. In different directions of wrist movement, the maximum activation was recorded at the primary motor cortex (M1). Conclusion: The present study has investigated the ability of fNIRS to evaluate cortical activation during passive movement of the wrist. Analysis of recording signals showed that different directions of movement have specific activation patterns in the motor cortex.

scholarly journals Quantification of functional near infrared
spectroscopy to assess cortical reorganization 
in children with cerebral palsy

2010 ◽  
Vol 18 (25) ◽  
pp. 25973 ◽  
Author(s):  
Fenghua Tian ◽  
Mauricio R. Delgado ◽  
Sameer C. Dhamne ◽  
Bilal Khan ◽  
George Alexandrakis ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cortical Reorganization ◽  
Functional Near Infrared Spectroscopy ◽  
Children With Cerebral Palsy

scholarly journals Comparison of Brain Activation Patterns during Olfactory Stimuli between Recovered COVID-19 Patients and Healthy Controls: A Functional Near-Infrared Spectroscopy (fNIRS) Study

2021 ◽  
Vol 11 (8) ◽  
pp. 968
Author(s):  
Roger C. Ho ◽  
Vijay K. Sharma ◽  
Benjamin Y. Q. Tan ◽  
Alison Y. Y. Ng ◽  
Yit-Shiang Lui ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Time Interval ◽  
Healthy Controls ◽  
Functional Near Infrared Spectroscopy ◽  
Activation Patterns ◽  
Identification Test ◽  
Olfactory Stimuli ◽  
Preliminary Study

Impaired sense of smell occurs in a fraction of patients with COVID-19 infection, but its effect on cerebral activity is unknown. Thus, this case report investigated the effect of COVID-19 infection on frontotemporal cortex activity during olfactory stimuli. In this preliminary study, patients who recovered from COVID-19 infection (n = 6) and healthy controls who never contracted COVID-19 (n = 6) were recruited. Relative changes in frontotemporal cortex oxy-hemoglobin during olfactory stimuli was acquired using functional near-infrared spectroscopy (fNIRS). The area under curve (AUC) of oxy-hemoglobin for the time interval 5 s before and 15 s after olfactory stimuli was derived. In addition, olfactory function was assessed using the Sniffin’ Sticks 12-identification test (SIT-12). Patients had lower SIT-12 scores than healthy controls (p = 0.026), but there were no differences in oxy-hemoglobin AUC between healthy controls and patients (p > 0.05). This suggests that past COVID-19 infection may not affect frontotemporal cortex function, and these preliminary results need to be verified in larger samples.

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