Results 21 to 30 of about 4,839,288 (277)

B0-field dependence of MRI T1 relaxation in human brain

open access: yesNeuroImage, 2020
Tissue longitudinal relaxation characterized by recovery time T1 or rate R1 is a fundamental MRI contrast mechanism that is increasingly being used to study the brain’s myelination patterns in both health and disease.
Yicun Wang   +3 more
doaj   +1 more source

Diagnosis and treatment of paraneoplastic neurological disorders [PDF]

open access: yes, 2004
In about two thirds of cases, patients with paraneoplastic neurological disorders present to the neurologist without a known tumor. Due to the ongoing immune response, this tumor tends to stay biologically relatively benign, and therefore difficult to ...
Voltz, R., Graus, F.
core   +1 more source

Decomposition of Spontaneous Brain Activity into Distinct fMRI Co-activation Patterns

open access: yesFrontiers in Systems Neuroscience, 2013
Recent fMRI studies have shown that analysis of the human brain’s spontaneous activity may provide a powerful approach to reveal its functional organization. Dedicated methods have been proposed to investigate co-variation of signals from different brain
Xiao eLiu, Catie eChang, Jeff H. Duyn
doaj   +1 more source

Transient resting-state salience-limbic co-activation patterns in functional neurological disorders. [PDF]

open access: yesNeuroimage Clin
BACKGROUND Functional neurological disorders were historically regarded as the manifestation of a dynamic brain lesion which might be linked to trauma or stress, although this association has not yet been directly tested yet.
Weber S   +6 more
europepmc   +4 more sources

Ex vivo MR microscopy of a human brain with multiple sclerosis: Visualizing individual cells in tissue using intrinsic iron

open access: yesNeuroImage, 2020
Purpose: To perform magnetic resonance microscopy (MRM) on human cortex and a cortical lesion as well as the adjacent normal appearing white matter. To shed light on the origins of MRI contrast by comparison with histochemical and immunostaining. Methods:
Govind Nair   +4 more
doaj   +1 more source

Scaling up services for mental and neurological disorders in low-resource settings. [PDF]

open access: yes, 2009
Mental and neurological disorders (MNDs) account for a large, and growing, burden of disease in low- and middle-income countries. Most people do not have access to even basic health care for these disorders.
Vikram Patel   +5 more
core   +2 more sources

Hiding in Plain Sight: Functional Neurological Disorders in the News [PDF]

open access: yes, 2019
Objective: Functional movement and seizure disorders are still widely misunderstood and receive little public and academic attention. This is in stark contrast to their high prevalence and levels of associated disability. In an exploratory observational
Reuber, M.   +88 more
core   +3 more sources

Anatomical and functional investigation of the marmoset default mode network

open access: yesNature Communications, 2019
The default mode network (DMN) is a core brain network in humans. Here, the authors show that marmoset primates also possess a DMN-like network but, unlike in the human DMN, dlPFC is a more prominent node than mPFC, suggesting mPFC is more developed in ...
Cirong Liu   +5 more
doaj   +1 more source

Detection of demyelination in multiple sclerosis by analysis of T2* relaxation at 7 T

open access: yesNeuroImage: Clinical, 2015
Multiple sclerosis (MS) is a relatively common cause of inflammatory demyelinating lesions of the central nervous system. In an attempt to detect and characterize ongoing demyelination in MS patient brains, we used a novel magnetic resonance imaging (MRI)
Xiaozhen Li   +5 more
doaj   +1 more source

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