Adrian P. Crawley

artykuł

Invalidation of fMRI experiments secondary to neurovascular uncoupling in patients with cerebrovascular disease

Andrea E. Para, Kevin Sam, Julien Poublanc, Joseph A. Fisher, więcej

Journal of Magnetic Resonance Imaging > 46 > 5 > 1448 - 1455

Purpose Blood oxygen level‐dependent (BOLD) functional magnetic resonance imaging (fMRI) is a technique used to infer neuronal activity from the observed changes in blood flow. Cerebrovascular reactivity (CVR) is the ability of arterioles to increase blood flow in response to vasodilatory stimulus. We hypothesize that in areas of disease where there is exhausted vascular reserve and impaired CVR...

artykuł

Impaired dynamic cerebrovascular response to hypercapnia predicts development of white matter hyperintensities

Kevin Sam, John Conklin, Kenneth R. Holmes, Olivia Sobczyk, więcej

NeuroImage: Clinical > 2016 > 11 > C > 796-801

To evaluate the relationship between both dynamic and steady-state measures of cerebrovascular reactivity (CVR) and the progression of age-related white matter disease.Blood oxygen level-dependent (BOLD) MRI CVR scans were acquired from forty-five subjects (age range: 50–90years, 25 males) with moderate to severe white matter disease, at baseline and one-year follow-up. To calculate the dynamic (τ)...

artykuł

Abnormal gray matter aging in chronic pain patients

Massieh Moayedi, Irit Weissman-Fogel, Tim V. Salomons, Adrian P. Crawley, więcej

Brain Research > 2012 > 1456 > Complete > 82-93

Widespread brain gray matter (GM) atrophy is a normal part of the aging process. However, recent studies indicate that age-related GM changes are not uniform across the brain and may vary according to health status. Therefore the aims of this study were to determine whether chronic pain in temporomandibular disorder (TMD) is associated with abnormal GM aging in focal cortical regions associated with...

artykuł

Contribution of chronic pain and neuroticism to abnormal forebrain gray matter in patients with temporomandibular disorder

Massieh Moayedi, Irit Weissman-Fogel, Adrian P. Crawley, Michael B. Goldberg, więcej

NeuroImage > 2011 > 55 > 1 > 277-286

Cortical plasticity is thought to occur following continuous barrage of nociceptive afferent signals to the brain. Hence, chronic pain is presumed to induce anatomical and physiological changes in the brain over time. Inherent factors, some pre-dating the onset of chronic pain, may also contribute to brain abnormalities present in patients. In this study we used structural MRI to examine whether patients...

artykuł

Reduced gray matter in the anterior cingulate gyrus in familial schizophrenia: A preliminary report

Gregory Costain, Andrew Ho, Adrian P. Crawley, David J. Mikulis, więcej

Schizophrenia Research > 2010 > 122 > 1-3 > 81-84

Few brain imaging studies of schizophrenia involve samples with enhanced genetic homogeneity. We compared MRI volumetric data between individuals with 1q21–q23 linked familial schizophrenia associated with NOS1AP and their first and second degree unaffected relatives. We found significant gray matter reductions in the anterior cingulate gyrus in both affected individuals and their unaffected first...

artykuł

Blood‐oxygen level dependent MRI measures of cerebrovascular reactivity using a controlled respiratory challenge: Reproducibility and gender differences

Andrea Kassner, Jeff D. Winter, Julien Poublanc, David J. Mikulis, więcej

Journal of Magnetic Resonance Imaging > 31 > 2 > 298 - 304

Purpose:To evaluate the reproducibility and gender differences in cerebrovascular reactivity (CVR) measurements obtained using the blood‐oxygen level dependent (BOLD) response to controlled changes in end‐tidal partial pressure of carbon dioxide (PETCO₂). Materials and Methods:We obtained ethical approval to image 19 healthy volunteers (10 men, 9 women) on a 1.5 Tesla (T) MRI scanner twice on two...

artykuł

Voxel-based morphometry and automated lobar volumetry: The trade-off between spatial scale and statistical correction

Eduard H.J. Voormolen, Corie Wei, Eva W.C. Chow, Anne S. Bassett, więcej

NeuroImage > 2010 > 49 > 1 > 587-596

Voxel-based morphometry (VBM) and automated lobar region of interest (ROI) volumetry are comprehensive and fast methods to detect differences in overall brain anatomy on magnetic resonance images. However, VBM and automated lobar ROI volumetry have detected dissimilar gray matter differences within identical image sets in our own experience and in previous reports. To gain more insight into how diverging...

artykuł

The effects of simulated stuttering and prolonged speech on the neural activation patterns of stuttering and nonstuttering adults

Luc F. De Nil, Deryk S. Beal, Sophie J. Lafaille, Robert M. Kroll, więcej

Brain and Language > 2008 > 107 > 2 > 114-123

Functional magnetic resonance imaging was used to investigate the neural correlates of passive listening, habitual speech and two modified speech patterns (simulated stuttering and prolonged speech) in stuttering and nonstuttering adults. Within-group comparisons revealed increased right hemisphere biased activation of speech-related regions during the simulated stuttered and prolonged speech tasks,...

artykuł

Characterizing spatial and temporal features of autobiographical memory retrieval networks: a partial least squares approach

Donna Rose Addis, Anthony R. McIntosh, Morris Moscovitch, Adrian P. Crawley, więcej

NeuroImage > 2004 > 23 > 4 > 1460-1471

Conway (Conway, M.A., 1992. A structural model of autobiographical memory. In: Conway, M.A., Spinnler, H., Wagenaar, W.A. (Eds.), Theoretical Perspectives on Autobiological Memory. Kluwer Academic Publishers, Dordrecht, The Netherlands, pp. 167–194) proposed that two types of autobiographical memories (AMs) exist within a hierarchical AM system: unique, specific events and repeated, general memories...

artykuł

Direct Activation of the Ventral Striatum in Anticipation of Aversive Stimuli

Jimmy Jensen, Anthony R. McIntosh, Adrian P. Crawley, David J. Mikulis, więcej

Neuron > 2003 > 40 > 6 > 1251-1257

The brain ''reward'' system, centered on the limbic ventral striatum, plays a critical role in the response to pleasure and pain. The ventral striatum is activated in animal and human studies during anticipation of appetitive/pleasurable events, but its role in aversive/painful events is less clear. Here we present data from three human fMRI studies based on aversive conditioning using unpleasant...

artykuł

The Effect of Task Relevance on the Cortical Response to Changes in Visual and Auditory Stimuli: An Event-Related fMRI Study

Jonathan Downar, Adrian P. Crawley, David J. Mikulis, Karen D. Davis

NeuroImage > 2001 > 14 > 6 > 1256-1267

Attention is, in part, a mechanism for identifying features of the sensory environment of potential relevance to behavior. The network of brain areas sensitive to the behavioral relevance of multimodal sensory events has not been fully characterized. We used event-related fMRI to identify brain regions responsive to changes in both visual and auditory stimuli when those changes were either behaviorally...

artykuł

A cortical network for the detection of novel events across multiple sensory modalities

Jonathan Downar, Adrian P. Crawley, David J. Mikulis, Karen D. Davis

NeuroImage > 2001 > 13 > 6 Supplement > 310

artykuł

SI cortex is shut down in chronic pain patients with hysterical anaesthesia

Karen D. Davis, Irene Giannoylis, Jonathan Downar, Chun L. Kwan, więcej

NeuroImage > 2001 > 13 > 6 Supplement > 781

artykuł

The dominant hemisphere speech system mapped with event-related FMRI

Stephen J. Taylor, Mary Pat McAndrews, Adrian P. Crawley, David Mikulis

NeuroImage > 2000 > 11 > 5 Supplement > S346

artykuł

Language lateralization in epilepsy patients with fMRI: A comparison of verb generation and naming tasks

Mary Pat McAndrews, Adrian P. Crawley, Irene Giannoylis, David J. Mikulis

NeuroImage > 2000 > 11 > 5 Supplement > S347

artykuł

An fMRI study of the anterior cingulate cortex and surrounding medial wall activations evoked by noxious cutaneous heat and cold stimuli

Chun L. Kwan, Adrian P. Crawley, David J. Mikulis, Karen D. Davis

Pain > 2000 > 85 > 3 > 359-374

The anterior cingulate cortex (ACC) and adjacent regions in the medial wall have been implicated in sensory, motor and cognitive processes, including pain. Our previous functional magnetic resonance imaging (fMRI) studies have demonstrated pain-related activation of the posterior portion of the ACC during transcutaneous electrical nerve stimulation (TENS) and variable patterns of cortical activation...

artykuł

Regionalized sensorimotor plasticity after hemispherectomy fMRI evaluation - A PET study

Chantal J. Graveline, David J. Mikulis, Adrian P. Crawley, Paul Andrew Hwang

Pediatric Neurology > 1998 > 19 > 5 > 337-342

This study demonstrates the transfer of both motor and sensory functions from one hemisphere to the other in children who had an entire cortical hemisphere surgically removed. The areas of the cortex responsible for these new functions in the remaining hemisphere are associative motor and sensory areas and do not include the typical primary motor and somatosensory regions, thus suggesting the regionalization...

INFONA - portal komunikacji naukowej

Wyniki wyszukiwania dla: Adrian P. Crawley

Invalidation of fMRI experiments secondary to neurovascular uncoupling in patients with cerebrovascular disease

Impaired dynamic cerebrovascular response to hypercapnia predicts development of white matter hyperintensities

Abnormal gray matter aging in chronic pain patients

Contribution of chronic pain and neuroticism to abnormal forebrain gray matter in patients with temporomandibular disorder

Reduced gray matter in the anterior cingulate gyrus in familial schizophrenia: A preliminary report

Blood‐oxygen level dependent MRI measures of cerebrovascular reactivity using a controlled respiratory challenge: Reproducibility and gender differences

Voxel-based morphometry and automated lobar volumetry: The trade-off between spatial scale and statistical correction

The effects of simulated stuttering and prolonged speech on the neural activation patterns of stuttering and nonstuttering adults

Characterizing spatial and temporal features of autobiographical memory retrieval networks: a partial least squares approach

Direct Activation of the Ventral Striatum in Anticipation of Aversive Stimuli

The Effect of Task Relevance on the Cortical Response to Changes in Visual and Auditory Stimuli: An Event-Related fMRI Study

A cortical network for the detection of novel events across multiple sensory modalities

SI cortex is shut down in chronic pain patients with hysterical anaesthesia

The dominant hemisphere speech system mapped with event-related FMRI

Language lateralization in epilepsy patients with fMRI: A comparison of verb generation and naming tasks

An fMRI study of the anterior cingulate cortex and surrounding medial wall activations evoked by noxious cutaneous heat and cold stimuli

Regionalized sensorimotor plasticity after hemispherectomy fMRI evaluation - A PET study

Opcje filtrowania

Data publikacji

Słowa kluczowe

Zbiór danych

Czasopismo

INFONA - portal komunikacji naukowej

Wyniki wyszukiwania dla: Adrian P. Crawley

Dodaj adresata

Anulowanie wysłania wiadomości

Czy na pewno chcesz anulować wysłanie wiadomości?

Wyślij wiadomość

Opcje filtrowania

Data publikacji

Ustawianie zakresu dat

Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.

Słowa kluczowe

Zbiór danych

Czasopismo

Zgłaszanie błędu / nadużycia

Nieudane wysłanie zgłoszenia

Ułatwienia dostępu