Type
Conference PaperKAUST Department
Applied Mathematics and Computational Science ProgramComputational Bioscience Research Center (CBRC)
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2014-08Permanent link to this record
http://hdl.handle.net/10754/564965
Metadata
Show full item recordAbstract
The neurovascular coupling is a key mechanism linking the neural activity to the hemodynamic behavior. Modeling of this coupling is very important to understand the brain function but it is at the same time very complex due to the complexity of the involved phenomena. Many studies have reported a time delay between the neural activity and the cerebral blood flow, which has been described by adding a delay parameter in some of the existing models. An alternative approach is proposed in this paper, where a fractional system is used to model the neurovascular coupling. Thanks to its nonlocal property, a fractional derivative is suitable for modeling the phenomena with delay. The proposed model is coupled with the first version of the well-known balloon model, which relates the cerebral blood flow to the Blood Oxygen Level Dependent (BOLD) signal measured using functional Magnetic Resonance Imaging (fMRI). Through some numerical simulations, the properties of the fractional model are explained and some preliminary comparisons to a real BOLD data set are provided. © 2014 IEEE.Citation
Belkhatir, Z., & Laleg-Kirati, T. M. (2014). Fractional dynamical model for neurovascular coupling. 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. doi:10.1109/embc.2014.6944726Journal
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology SocietyConference/Event name
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014ISBN
9781424479290ae974a485f413a2113503eed53cd6c53
10.1109/EMBC.2014.6944726