Results 1 to 10 of about 390,558 (314)

Topographic numerosity maps cover subitizing and estimation ranges

Nature Communications, 2021
Here, the authors show that the brain represents small and large numerosity ranges in a continuous topographic map, in line with the idea that differences in map properties underlie differences in perception.
Yuxuan Cai, Shir Hofstetter, Jelle van Dijk, Wietske Zuiderbaan, Wietske van der Zwaag, Ben M. Harvey, Serge O. Dumoulin   +6 more
doaj   +1 more source

Evaluating the effects of brain injury, disease and tasks on cognitive fatigue

Scientific Reports, 2023
Because cognitive fatigue (CF) is common and debilitating following brain injury or disease we investigated the relationships among CF, behavioral performance, and cerebral activation within and across populations by combining the data from two cross ...
Glenn R. Wylie, Helen M. Genova, Bing Yao, Nancy Chiaravalloti, Cristina A. F. Román, Brian M. Sandroff, John DeLuca   +6 more
doaj   +1 more source

Identification of single-dose, dual-echo based CBV threshold for fractional tumor burden mapping in recurrent glioblastoma

Frontiers in Oncology, 2023
BackgroundRelative cerebral blood volume (rCBV) obtained from dynamic susceptibility contrast (DSC) MRI is widely used to distinguish high grade glioma recurrence from post treatment radiation effects (PTRE).
Aliya Anil, Ashley M. Stokes, Renee Chao, Leland S. Hu, Lea Alhilali, John P. Karis, Laura C. Bell, C. Chad Quarles   +7 more
doaj   +1 more source

Evaluating blood–brain barrier permeability in a rat model of type 2 diabetes

Journal of Translational Medicine, 2020
Background This is an exploratory study using a novel imaging modality, quantitative ultrashort time-to-echo, contrast enhanced (QUTE-CE) magnetic resonance imaging to evaluate the permeability of the blood–brain barrier in a rat model of type 2 diabetes
Ju Qiao, Christopher M. Lawson, Kilian F. G. Rentrup, Praveen Kulkarni, Craig F. Ferris   +4 more
doaj   +1 more source

CannaCount: an improved metric for quantifying estimates of maximum possible cannabinoid exposure

Scientific Reports, 2023
Increasing numbers of individuals have access to cannabinoid-based products containing various amounts of delta-9-tetrahydrocannabinol (THC), cannabidiol (CBD), and other cannabinoids. Exposure to specific cannabinoids likely influences outcomes; however,
Ashley M. Lambros, Kelly A. Sagar, M. Kathryn Dahlgren, Deniz Kosereisoglu, Celine El-Abboud, Rosemary T. Smith, Staci A. Gruber   +6 more
doaj   +1 more source

An in-vivo study of BOLD laminar responses as a function of echo time and static magnetic field strength

Scientific Reports, 2021
Layer specific functional MRI requires high spatial resolution data. To compensate the associated poor signal to noise ratio it is common to integrate the signal from voxels at a given cortical depth.
Irati Markuerkiaga, José P. Marques, Lauren J. Bains, David G. Norris   +3 more
doaj   +1 more source

Neuroimaging in Narcolepsy [PDF]

Sleep Medicine, 2010
Narcolepsy is a chronic neurological disorder, has no specific cause, and is characterized by excessive daytime sleepiness and uncontrollable sleep attacks. In case of strong emotions such as laughter, anger or joy, a cataplexy (sudden loss of muscle tone, lasting for a short period of time) may occur (1, 2).
Hakyemez, BAHATTİN, Bican, AYLİN, Alper, E., Ozkol, V., Algin, O., Bora, I.   +5 more
openaire   +5 more sources

Deep Interpretability Methods for Neuroimaging

, 2022
Brain dynamics are highly complex and yet hold the key to understanding brain function and dysfunction. The dynamics captured by resting-state functional magnetic resonance imaging data are noisy, high-dimensional, and not readily interpretable.
Rahman, Md Mahfuzur
core   +1 more source

Evaluation of Amyotrophic Lateral Sclerosis-Induced Muscle Degeneration Using Magnetic Resonance-Based Relaxivity Contrast Imaging (RCI)

Tomography, 2021
(1) Background: This work characterizes the sensitivity of magnetic resonance-based Relaxivity Contrast Imaging (RCI) to Amyotrophic Lateral Sclerosis (ALS)-induced changes in myofiber microstructure.
Sudarshan Ragunathan, Laura C. Bell, Natenael Semmineh, Ashley M. Stokes, Jeremy M. Shefner, Robert Bowser, Shafeeq Ladha, C. Chad Quarles   +7 more
doaj   +1 more source

Using functional connectivity changes associated with cognitive fatigue to delineate a fatigue network

Scientific Reports, 2020
Cognitive fatigue, or fatigue related to mental work, is a common experience. A growing body of work using functional neuroimaging has identified several regions that appear to be related to cognitive fatigue and that potentially comprise a “fatigue ...
G. R. Wylie, B. Yao, H. M. Genova, M. H. Chen, J. DeLuca   +4 more
doaj   +1 more source