dc.contributor.author | Aydore, Sergul | |
dc.contributor.author | Mihcak, M. Kivanc | |
dc.contributor.author | Çiftçi, Koray | |
dc.contributor.author | Akın, Ata | |
dc.date.accessioned | 2022-05-11T14:17:35Z | |
dc.date.available | 2022-05-11T14:17:35Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 0018-9294 | |
dc.identifier.uri | https://doi.org/10.1109/TBME.2009.2020792 | |
dc.identifier.uri | https://hdl.handle.net/20.500.11776/6409 | |
dc.description.abstract | Functional near-infrared spectroscopy (fNIRS) is an optical imaging method, which monitors the brain activation by measuring the successive changes in the concentration of oxy- and deoxyhemoglobin in real time. In this study, we present a method to investigate the functional connectivity of prefrontal cortex (PFC) Sby applying a Gauss-Markov model to fNIRS signals. The hemodynamic changes on PFC during the performance of cognitive paradigm are measured by fNIRS for 17 healthy adults. The color-word matching Stroop task is performed to activate 16 different regions of PFC. There are three different types of stimuli in this task, which can be listed as incongruent stimulus ( IS), congruent stimulus ( CS), and neutral stimulus (NS), respectively. We introduce a new measure, called information transfermetric (ITM) for each time sample. The behavior of ITMs during IS are significantly different from the ITMs during CS and NS, which is consistent with the outcome of the previous research, which concentrated on fNIRS signal analysis via color-word matching Stroop task. Our analysis shows that the functional connectivity of PFC is highly relevant with the cognitive load, i.e., functional connectivity increases with the increasing cognitive load. | en_US |
dc.description.sponsorship | Bogazici University Research FundBogazici University [04X102D, 04S101]; Turkish State Planning Organization [03K120250, 03K120240]; Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [106E117]; Turkiye Bilimler Akademisi-Genc Bilim Insanlarini Odullendirme Programi (TUBA-GEBIP)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) | en_US |
dc.description.sponsorship | Manuscript received September 8, 2008; revised December 16, 2008 and March 3, 2009. First published April 28, 2009; current version published February 17, 2010. This work was supported by the Bogazici University Research Fund under Project 04X102D and Project 04S101, and by the Turkish State Planning Organization under Project 03K120250 and Project 03K120240. The work of M. K. Mihcak was supported in part by Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) Career Award 106E117. The work of S. Aydore was supported in part by the Turkiye Bilimler Akademisi-Genc Bilim Insanlarini Odullendirme Programi (TUBA-GEBIP) Award and in part by the TUBITAK Graduate Scholarship. Asterisk indicates corresponding author. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | IEEE-Inst Electrical Electronics Engineers Inc | en_US |
dc.identifier.doi | 10.1109/TBME.2009.2020792 | |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Functional connectivity | en_US |
dc.subject | gauss markov model | en_US |
dc.subject | near infrared spectroscopy | en_US |
dc.subject | stroop test | en_US |
dc.subject | Near-Infrared Spectroscopy | en_US |
dc.subject | Matching Stroop Task | en_US |
dc.subject | Cerebral Hemodynamics | en_US |
dc.subject | Human Adults | en_US |
dc.subject | Brain | en_US |
dc.subject | Activation | en_US |
dc.subject | Interference | en_US |
dc.subject | Fmri | en_US |
dc.subject | Nirs | en_US |
dc.title | On Temporal Connectivity of PFC Via Gauss-Markov Modeling of fNIRS Signals | en_US |
dc.type | article | en_US |
dc.relation.ispartof | Ieee Transactions on Biomedical Engineering | en_US |
dc.department | Fakülteler, Çorlu Mühendislik Fakültesi, Elektronik ve Haberleşme Mühendisliği Bölümü | en_US |
dc.authorid | 0000-0001-9194-459X | |
dc.authorid | 0000-0002-1773-0857 | |
dc.authorid | 0000-0001-6137-766X | |
dc.identifier.volume | 57 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.startpage | 761 | en_US |
dc.identifier.endpage | 768 | en_US |
dc.institutionauthor | Çiftçi, Koray | |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.authorscopusid | 6602570942 | |
dc.authorscopusid | 6602209719 | |
dc.authorscopusid | 6603952578 | |
dc.authorscopusid | 8302822700 | |
dc.authorwosid | Çiftçi, Koray/ABA-6527-2020 | |
dc.authorwosid | Mihcak, M. Kivanc/M-2748-2015 | |
dc.authorwosid | Akin, Ata/AAF-2494-2019 | |
dc.identifier.wos | WOS:000274990800030 | en_US |
dc.identifier.scopus | 2-s2.0-77649149216 | en_US |
dc.identifier.pmid | 19403360 | en_US |