Analytic Signal-Based Causal Network Estimator for Hemodynamic Signal Analysis in the Brain
- Authors
- Park, Jang-Woo; Lee, Gihyoun; Kim, Beop-Min; Chang, Yongmin; Jung, Young-Jin
- Issue Date
- 5월-2019
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Causality; Connectivity; fMRI; f-NIRS; Phase-locking value
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.74, no.9, pp.847 - 854
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 74
- Number
- 9
- Start Page
- 847
- End Page
- 854
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/65869
- DOI
- 10.3938/jkps.74.847
- ISSN
- 0374-4884
- Abstract
- The connectivity and the causality were estimated using functional magnetic resonance imaging (fMRI) and functional near-infrared spectroscopy (f-NIRS) signals to introduce an optimal networks analysis technique for hemodynamic signals. Instantaneous phase information was utilized to analyze the fMRI time series and the f-NIRS signals in order to estimate connectivity and causal networks in the brain. To identify an optimal estimator, the conducted computer-based Monte Carlo simulation using fMRI mimicking signals under various realistic conditions. The simulation results showed that the phase-information-based approach can be an optimal causal estimator for hemodynamic signals.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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