Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Kamil Uludaǧ"'
Publikováno v:
Frontiers in Physiology, Vol 14 (2024)
Cerebral blood flow (CBF) is a critical physiological parameter of brain health, and it can be non-invasively measured with arterial spin labeling (ASL) MRI. In this study, we evaluated and optimized whole-brain, high-resolution ASL as an alternative
Externí odkaz:
https://doaj.org/article/f6975f403a4f40aa82774afda7dcec91
Autor:
Kâmil Uludağ
Publikováno v:
NeuroImage, Vol 277, Iss , Pp 120249- (2023)
In this primer, I provide an overview of the physiological processes that contribute to the observed BOLD signal (i.e., the generative biophysical model), including their time course properties within the framework of the physiologically-informed dyn
Externí odkaz:
https://doaj.org/article/f8f088d634604a52881f488e34c388d1
Autor:
Sayan Nag, Kamil Uludag
Publikováno v:
Frontiers in Human Neuroscience, Vol 17 (2023)
Functional MRI (fMRI) is an indirect reflection of neuronal activity. Using generative biophysical model of fMRI data such as Dynamic Causal Model (DCM), the underlying neuronal activities of different brain areas and their causal interactions (i.e.,
Externí odkaz:
https://doaj.org/article/d0218f372e7d4a188212deba1ea7a38a
Autor:
Jacob Benjamin Schulman, Ece Su Sayin, Angelica Manalac, Julien Poublanc, Olivia Sobczyk, James Duffin, Joseph A. Fisher, David Mikulis, Kâmil Uludağ
Publikováno v:
Frontiers in Neuroimaging, Vol 2 (2023)
IntroductionDynamic susceptibility contrast (DSC) MRI allows clinicians to determine perfusion parameters in the brain, such as cerebral blood flow, cerebral blood volume, and mean transit time. To enable quantification, susceptibility changes can be
Externí odkaz:
https://doaj.org/article/ce71c70ddd594426a2ccf68897f08e29
Autor:
Heidi IL Jacobs, Nikos Priovoulos, Benedikt A Poser, Linda HG Pagen, Dimo Ivanov, Frans RJ Verhey, Kâmil Uludağ
Publikováno v:
eLife, Vol 9 (2020)
A body of animal and human evidence points to the norepinephrine (NE) locus coeruleus (LC) system in modulating memory for arousing experiences, but whether the LC would recast its role along memory stages remains unknown. Sedation precluded examinat
Externí odkaz:
https://doaj.org/article/eb88ec82ddf3497e8b7b2a1585bc92b2
Autor:
Ingo Marquardt, Peter De Weerd, Marian Schneider, Omer Faruk Gulban, Dimo Ivanov, Yawen Wang, Kâmil Uludağ
Publikováno v:
eLife, Vol 9 (2020)
Human visual surface perception has neural correlates in early visual cortex, but the role of feedback during surface segmentation in human early visual cortex remains unknown. Feedback projections preferentially enter superficial and deep anatomical
Externí odkaz:
https://doaj.org/article/f49132518d49436f85cc752a53bbc0c2
Publikováno v:
NeuroImage, Vol 264, Iss , Pp 119675- (2022)
The most widely used gradient-echo (GE) blood oxygenation level-dependent (BOLD) contrast has high sensitivity, but low specificity due to draining vein contributions, while spin-echo (SE) BOLD approach at ultra-high magnetic fields is highly specifi
Externí odkaz:
https://doaj.org/article/24fbdd998e9443729437a7ffd1c8f759
This volume explores the revolutionary fMRI field from basic principles to state-of-the-art research. It covers a broad spectrum of topics, including the history of fMRI's development using endogenous MR blood contrast, neurovascular coupling, pulse
Publikováno v:
NeuroImage, Vol 241, Iss , Pp 118435- (2021)
Mapping mesoscopic cortical functional units such as columns or laminae is increasingly pursued by ultra-high field (UHF) functional magnetic resonance imaging (fMRI). The most popular approach for high-resolution fMRI is currently gradient-echo (GE)
Externí odkaz:
https://doaj.org/article/fba499ff7a984e30911ac1c22b46021a
Autor:
Emrah Düzel, Julio Acosta‐Cabronero, David Berron, Geert Jan Biessels, Isabella Björkman‐Burtscher, Michel Bottlaender, Richard Bowtell, Mark v Buchem, Arturo Cardenas‐Blanco, Fawzi Boumezbeur, Dennis Chan, Stuart Clare, Mauro Costagli, Ludovic deRochefort, Ariane Fillmer, Penny Gowland, Oskar Hansson, Jeroen Hendrikse, Oliver Kraff, Mark E. Ladd, Itamar Ronen, Esben Petersen, James B. Rowe, Hartwig Siebner, Tony Stoecker, Sina Straub, Michela Tosetti, Kamil Uludag, Alexandre Vignaud, Jaco Zwanenburg, Oliver Speck
Publikováno v:
Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, Vol 11, Iss 1, Pp 538-549 (2019)
Abstract Introduction The goal of European Ultrahigh‐Field Imaging Network in Neurodegenerative Diseases (EUFIND) is to identify opportunities and challenges of 7 Tesla (7T) MRI for clinical and research applications in neurodegeneration. EUFIND co
Externí odkaz:
https://doaj.org/article/25c6b44ea5a441e7af8da50154653a2c