scholarly journals Age-related changes in effective connectivity as revealed by Dynamic Bayesian theory using near-infrared spectroscopy

2017 ◽  
Author(s):  
Congcong Huo ◽  
Gongcheng Xu ◽  
Zengyong Li
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Effective Connectivity ◽  
Bayesian Theory ◽  
Age Related ◽  
Age Related Changes

scholarly journals Cognitive Difficulty Intensifies Age-related Changes in Anterior Frontal Hemodynamics: Novel Evidence from Near-infrared Spectroscopy

2016 ◽  
Vol 72 (2) ◽  
pp. 181-188 ◽  
Author(s):  
Kirstin L. Bierre ◽  
Samuel J. E. Lucas ◽  
Hayley Guiney ◽  
James D. Cotter ◽  
Liana Machado
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Age Related ◽  
Cognitive Difficulty ◽  
Age Related Changes

scholarly journals Median Nerve Electrical Stimulation–Induced Changes in Effective Connectivity in Patients With Stroke as Assessed With Functional Near-Infrared Spectroscopy

2019 ◽  
Vol 33 (12) ◽  
pp. 1008-1017 ◽  
Author(s):  
Congcong Huo ◽  
Xinglou Li ◽  
Jing Jing ◽  
Yanping Ma ◽  
Wenhao Li ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Infrared Spectroscopy ◽  
Median Nerve ◽  
Near Infrared Spectroscopy ◽  
Resting State ◽  
Near Infrared ◽  
Cerebral Oxygenation ◽  
Effective Connectivity ◽  
Stroke Patients ◽  
Functional Near Infrared Spectroscopy

Background. The cortical plastic changes in response to median nerve electrical stimulation (MNES) in stroke patients have not been entirely illustrated. Objective. This study aimed to investigate MNES-related changes in effective connectivity (EC) within a cortical network after stroke by using functional near-infrared spectroscopy (fNIRS). Methods. The cerebral oxygenation signals in the bilateral prefrontal cortex (LPFC/RPFC), motor cortex (LMC/RMC), and occipital lobe (LOL/ROL) of 20 stroke patients with right hemiplegia were measured by fNIRS in 2 conditions: (1) resting state and (2) MNES applied to the right wrist. Coupling function together with dynamical Bayesian inference was used to assess MNES-related changes in EC among the cerebral low-frequency fluctuations. Results. Compared with the resting state, EC from LPFC and RPFC to LOL was significantly increased during the MNES state in stroke patients. Additionally, MNES triggered significantly higher coupling strengths from LMC and LOL to RPFC. The interregional main coupling direction was observed from LPFC to bilateral motor and occipital areas in responding to MNES, suggesting that MNES could promote the regulation function of ipsilesional prefrontal areas in the functional network. MNES can induce muscle twitch of the stroke-affected hand involving a decreased neural coupling of the contralesional motor area on the ipsilesional MC. Conclusions. MNES can trigger sensorimotor stimulations of the affected hand that sequentially involved functional reorganization of distant cortical areas after stroke. Investigating MNES-related changes in EC after stroke may help further our understanding of the neural mechanisms underlying MNES.

scholarly journals Assessment of age-related decline of neurovascular coupling responses by functional near-infrared spectroscopy (fNIRS) in humans

GeroScience ◽  
2019 ◽  
Vol 41 (5) ◽  
pp. 495-509 ◽  
Author(s):  
Tamas Csipo ◽  
Peter Mukli ◽  
Agnes Lipecz ◽  
Stefano Tarantini ◽  
Dhay Bahadli ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Neurovascular Coupling ◽  
Functional Near Infrared Spectroscopy ◽  
Age Related

scholarly journals Similar Age-Related Decline in Cortical Activity Over Frontotemporal Regions in Schizophrenia: A Multichannel Near-Infrared Spectroscopy Study

2014 ◽  
Vol 41 (1) ◽  
pp. 268-279 ◽  
Author(s):  
P.-H. Chou ◽  
S. Koike ◽  
Y. Nishimura ◽  
Y. Satomura ◽  
A. Kinoshita ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cortical Activity ◽  
Spectroscopy Study ◽  
Age Related
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