keyword
MENU ▼
Read by QxMD icon Read
search

Fmri aging

keyword
https://www.readbyqxmd.com/read/29667272/different-brain-networks-underlying-intelligence-in-autism-spectrum-disorders
#1
Emmanuel Peng Kiat Pua, Charles B Malpas, Stephen C Bowden, Marc L Seal
There has been sustained clinical and cognitive neuroscience research interest in how network correlates of brain-behavior relationships might be altered in Autism Spectrum Disorders (ASD) and other neurodevelopmental disorders. As previous work has mostly focused on adults, the nature of whole-brain connectivity networks underlying intelligence in pediatric cohorts with abnormal neurodevelopment requires further investigation. We used network-based statistics (NBS) to examine the association between resting-state functional Magnetic Resonance Imaging (fMRI) connectivity and fluid intelligence ability in male children (n = 50) with Autism Spectrum Disorders (ASD; M = 10...
April 17, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29667212/breathlessness-amplifies-amygdala-responses-during-affective-processing
#2
M Cornelia Stoeckel, Roland W Esser, Matthias Gamer, Andreas von Leupoldt
Breathlessness is an aversive symptom in many prevalent somatic and psychiatric diseases and is usually experienced as highly threatening. It is strongly associated with negative affect, but the underlying neural processes remain poorly understood. Therefore, using fMRI, the present study examined the effects of breathlessness on the neural processing of affective visual stimuli within candidate brain areas including the amygdala, insula, and anterior cingulate cortex (ACC). During scanning, 42 healthy volunteers, mean (SD) age: 29...
April 17, 2018: Psychophysiology
https://www.readbyqxmd.com/read/29659125/extremely-preterm-children-exhibit-increased-interhemispheric-connectivity-for-language-findings-from-fmri-constrained-meg-analysis
#3
Maria E Barnes-Davis, Stephanie L Merhar, Scott K Holland, Darren S Kadis
Children born extremely preterm are at significant risk for cognitive impairment, including language deficits. The relationship between preterm birth and neurological changes that underlie cognitive deficits is poorly understood. We use a stories-listening task in fMRI and MEG to characterize language network representation and connectivity in children born extremely preterm (n = 15, <28 weeks gestation, ages 4-6 years), and in a group of typically developing control participants (n = 15, term birth, 4-6 years)...
April 16, 2018: Developmental Science
https://www.readbyqxmd.com/read/29659087/robust-spinal-cord-resting-state-fmri-using-independent-component-analysis-based-nuisance-regression-noise-reduction
#4
Yong Hu, Richu Jin, Guangsheng Li, Keith Dk Luk, Ed X Wu
BACKGROUND: Physiological noise reduction plays a critical role in spinal cord (SC) resting-state fMRI (rsfMRI). PURPOSE: To reduce physiological noise and increase the robustness of SC rsfMRI by using an independent component analysis (ICA)-based nuisance regression (ICANR) method. STUDY TYPE: Retrospective. SUBJECTS: Ten healthy subjects (female/male = 4/6, age = 27 ± 3 years, range 24-34 years). FIELD STRENGTH/SEQUENCE: 3T/gradient-echo echo planar imaging (EPI)...
April 16, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29651518/updating-impairments-and-the-failure-to-explore-new-hypotheses-following-right-brain-damage
#5
Elisabeth Stöttinger, Carolyn Louise Guay, James Danckert, Britt Anderson
We have shown recently that damage to the right hemisphere impairs the ability to update mental models when evidence suggests an old model is no longer appropriate. We argue that this deficit is generic in the sense that it crosses multiple cognitive and perceptual domains. Here, we examined the nature of this updating impairment to determine more precisely the underlying mechanisms. We had right (RBD, N = 12) and left brain damaged (LBD, N = 10) patients perform versions of our picture-morphing task in which pictures gradually morph from one object (e...
April 12, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29648462/a-systematic-review-of-neuroimaging-findings-in-children-and-adolescents-with-sports-related-concussion
#6
Emilie Chamard, Jonathan D Lichtenstein
BACKGROUND: Sport-related concussion (SRC) generally does not result in structural anomalies revealed through clinical imaging techniques such as MRI and CT. While advanced neuroimaging techniques offer another avenue to investigate the subtle alterations following SRC, the current pediatric literature in this area has yet to be reviewed. The aim of this review is to systematically explore the literature on magnetic resonance spectroscopy (MRS), diffusion tensor imaging (DTI), functional magnetic resonance imaging (fMRI), and cortical thickness following SRC in children and adolescents...
April 12, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29644923/patients-characteristics-and-their-influence-on-course-of-fear-during-agoraphobic-symptom-provocation-may-ss-n-ri-treatment-compensate-unfavorable-individual-preconditions
#7
Jens Plag, Moritz B Petzold, Johanna Gechter, Carolin Liebscher, Andreas Ströhle
BACKGROUND: Patients' characteristics and antidepressants are discussed to be relevant in the context of phobic exposure. AIMS: To identify patients characteristics associated with a differential course of fear during disorder-specific symptom provocation as well as to elucidate the effect of selective serotonin-(noradrenalin-) reuptake inhibitors [SS(N)RI] on development of fear in the context of re-exposure to the phobic stimuli. METHODS: Twenty-eight clinically well-characterized patients with panic disorder and agoraphobia (PD/AG) were classified into subjects who show a reduction of fear ('Fear-') during a symptom provocation via a picture-based paradigm (T1) and those who did not ('Fear+')...
April 12, 2018: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/29642425/lutein-and-zeaxanthin-are-positively-associated-with-visual-spatial-functioning-in-older-adults-an-fmri-study
#8
Catherine M Mewborn, Cutter A Lindbergh, Talia L Robinson, Marissa A Gogniat, Douglas P Terry, Kharine R Jean, Billy Randy Hammond, Lisa M Renzi-Hammond, Lloyd Stephen Miller
Lutein (L) and zeaxanthin (Z) are two xanthophyll carotenoids that have antioxidant and anti-inflammatory properties. Previous work has demonstrated their importance for eye health and preventing diseases such as age-related macular degeneration. An emerging literature base has also demonstrated the importance of L and Z in cognition, neural structure, and neural efficiency. The present study aimed to better understand the mechanisms by which L and Z relate to cognition, in particular, visual-spatial processing and decision-making in older adults...
April 7, 2018: Nutrients
https://www.readbyqxmd.com/read/29629499/reduced-brain-entropy-by-repetitive-transcranial-magnetic-stimulation-on-the-left-dorsolateral-prefrontal-cortex-in-healthy-young-adults
#9
Donghui Song, Da Chang, Jian Zhang, Wei Peng, Yuanqi Shang, Xin Gao, Ze Wang
Entropy indicates system irregularity and the capacity for information processing. Recent research has identified interesting voxel-wise entropy distribution patterns in normal brain and its changes due to aging and brain disorders. A question of great scientific and clinical importance is whether brain entropy (BEN) can be modulated using non-invasive neuromodulations. The purpose of this study was to address this open question using high-frequency repetitive transcranial magnetic stimulation (rTMS). BEN was calculated from resting state fMRI at each voxel acquired before and after applying 20 Hz rTMS or SHAM (control) stimulation...
April 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29627273/neural-functional-correlates-of-the-impact-of-socio-emotional-stimuli-on-performances-on-a-flanker-task-in-children-aged-9-11-years
#10
Morgane Réveillon, François Lazeyras, Laurens Van Calster, Yann Cojan, David Sander, Petra S Hüppi, Koviljka Barrisnikov
Immature cognition is susceptible to interference from competing information, and particularly in affectively charged situations. Several studies have reported activation in the anterior cingulate cortex, prefrontal cortex and amygdala associated with emotional conflict processing in adults but literature is lacking regarding children. Moreover, studies in children and adolescents still disagree regarding the functional activation of amygdala related to facial stimuli. In the purpose of investigating both the effect of socio-emotional stimuli and its interaction with interference control, we designed a flanker task associated with an event-related fMRI paradigm in 30 healthy children ages 9-11...
April 5, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29626776/a-fmri-study-on-the-impact-of-advertising-for-flavored-e-cigarettes-on-susceptible-young-adults
#11
Kathleen A Garrison, Stephanie S O'Malley, Ralitza Gueorguieva, Suchitra Krishnan-Sarin
BACKGROUND: E-cigarettes are sold in flavors such as "skittles," "strawberrylicious," and "juicy fruit," and no restrictions are in place on marketing e-cigarettes to youth. Sweets/fruits depicted in e-cigarette advertisements may increase their appeal to youth and interfere with health warnings. This study tested a brain biomarker of product preference for sweet/fruit versus tobacco flavor e-cigarettes, and whether advertising for flavors interfered with warning labels...
March 23, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29619759/severity-of-anxiety-moderates-the-association-between-neural-circuits-and-maternal-behaviors-in-the-postpartum-period
#12
Chaohui Guo, Eydie Moses-Kolko, Mary Phillips, James E Swain, Alison E Hipwell
Neuroimaging research has suggested that activity in the amygdala, center of the socioemotional network, and functional connectivity between the amygdala and cortical regions are associated with caregiving behaviors in postpartum mothers. Anxiety is common in the early postpartum period, with severity ranging from healthy maternal preoccupation to clinical disorder. However, little is known about the influence of anxiety on the neural correlates of early caregiving. We examined these relationships in a community cohort of 75 postpartum women (ages 18-22; predominantly low-SES, minority race) who listened to infant cry sounds while undergoing an fMRI assessment...
April 4, 2018: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/29618992/fronto-temporal-connectivity-predicts-ect-outcome-in-major-depression
#13
Amber M Leaver, Benjamin Wade, Megha Vasavada, Gerhard Hellemann, Shantanu H Joshi, Randall Espinoza, Katherine L Narr
Background: Electroconvulsive therapy (ECT) is arguably the most effective available treatment for severe depression. Recent studies have used MRI data to predict clinical outcome to ECT and other antidepressant therapies. One challenge facing such studies is selecting from among the many available metrics, which characterize complementary and sometimes non-overlapping aspects of brain function and connectomics. Here, we assessed the ability of aggregated, functional MRI metrics of basal brain activity and connectivity to predict antidepressant response to ECT using machine learning...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29618564/postnatal-zika-virus-infection-is-associated-with-persistent-abnormalities-in-brain-structure-function-and-behavior-in-infant-macaques
#14
Maud Mavigner, Jessica Raper, Zsofia Kovacs-Balint, Sanjeev Gumber, Justin T O'Neal, Siddhartha K Bhaumik, Xiaodong Zhang, Jakob Habib, Cameron Mattingly, Circe E McDonald, Victoria Avanzato, Mark W Burke, Diogo M Magnani, Varian K Bailey, David I Watkins, Thomas H Vanderford, Damien Fair, Eric Earl, Eric Feczko, Martin Styner, Sherrie M Jean, Joyce K Cohen, Guido Silvestri, R Paul Johnson, David H O'Connor, Jens Wrammert, Mehul S Suthar, Mar M Sanchez, Maria C Alvarado, Ann Chahroudi
The Zika virus (ZIKV) epidemic is associated with fetal brain lesions and other serious birth defects classified as congenital ZIKV syndrome. Postnatal ZIKV infection in infants and children has been reported; however, data on brain anatomy, function, and behavioral outcomes following infection are absent. We show that postnatal ZIKV infection of infant rhesus macaques (RMs) results in persistent structural and functional alterations of the central nervous system compared to age-matched controls. We demonstrate ZIKV lymphoid tropism and neurotropism in infant RMs and histopathologic abnormalities in the peripheral and central nervous systems including inflammatory infiltrates, astrogliosis, and Wallerian degeneration...
April 4, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29618332/schizophrenia-alters-intra-network-functional-connectivity-in-the-caudate-for-detecting-speech-under-informational-speech-masking-conditions
#15
Yingjun Zheng, Chao Wu, Juanhua Li, Ruikeng Li, Hongjun Peng, Shenglin She, Yuping Ning, Liang Li
BACKGROUND: Speech recognition under noisy "cocktail-party" environments involves multiple perceptual/cognitive processes, including target detection, selective attention, irrelevant signal inhibition, sensory/working memory, and speech production. Compared to health listeners, people with schizophrenia are more vulnerable to masking stimuli and perform worse in speech recognition under speech-on-speech masking conditions. Although the schizophrenia-related speech-recognition impairment under "cocktail-party" conditions is associated with deficits of various perceptual/cognitive processes, it is crucial to know whether the brain substrates critically underlying speech detection against informational speech masking are impaired in people with schizophrenia...
April 4, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29615896/brain-aging-and-apoe-%C3%AE%C2%B54-interact-to-reveal-potential-neuronal-compensation-in-healthy-older-adults
#16
Elisa Scheller, Lena V Schumacher, Jessica Peter, Jacob Lahr, Julius Wehrle, Christoph P Kaller, Christian Gaser, Stefan Klöppel
Compensation implies the recruitment of additional neuronal resources to prevent the detrimental effect of age-related neuronal decline on cognition. Recently suggested statistical models comprise behavioral performance, brain activation, and measures related to aging- or disease-specific pathological burden to characterize compensation. Higher chronological age as well as the APOE ε4 allele are risk factors for Alzheimer's disease. A more biological approach to characterize aging compared with chronological age is the brain age gap estimation (BrainAGE), taking into account structural brain characteristics...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29615873/alterations-of-white-matter-integrity-and-hippocampal-functional-connectivity-in-type-2-diabetes-without-mild-cognitive-impairment
#17
Qian Sun, Guan-Qun Chen, Xi-Bin Wang, Ying Yu, Yu-Chuan Hu, Lin-Feng Yan, Xin Zhang, Yang Yang, Jin Zhang, Bin Liu, Cong-Cong Wang, Yi Ma, Wen Wang, Ying Han, Guang-Bin Cui
Aims : To investigate the white matter (WM) integrity and hippocampal functional connectivity (FC) in type 2 diabetes mellitus (T2DM) patients without mild cognitive impairment (MCI) by using diffusion tensor imaging (DTI) and resting-state functional magnetic resonance imaging (rs-fMRI), respectively. Methods : Twelve T2DM patients without MCI and 24 age, sex and education matched healthy controls (HC) were recruited. DTI and rs-fMRI data were subsequently acquired on a 3.0T MR scanner. Tract-based spatial statistics (TBSS) combining region of interests (ROIs) analysis was used to investigate the alterations of DTI metrics (fractional anisotropy (FA), mean diffusivity (MD), λ1 and λ23 ) and FC measurement was performed to calculate hippocampal FC with other brain regions...
2018: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29615788/disturbed-retrieval-network-and-prospective-memory-decline-in-postpartum-women
#18
Na-Young Shin, Yunjin Bak, Yoonjin Nah, Sanghoon Han, Dong Joon Kim, Se Joo Kim, Jong Eun Lee, Sang-Guk Lee, Seung-Koo Lee
Prospective memory (PM) refers to the ability to remember to execute an intended action in the future. For successful PM performance, both top-down strategic monitoring and bottom-up spontaneous retrieval processes need to be appropriately recruited. We assessed PM performance and used fMRI to discover relevant neural correlates and possible predictors for PM performance in 25 postpartum and 26 nulliparous age- and education-matched women. Postpartum women showed decreased PM performance, a higher number of nocturnal awakenings, and lower estradiol level...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29611256/an-fmri-study-of-finger-tapping-in-children-and-adults
#19
Ted K Turesky, Olumide A Olulade, Megan M Luetje, Guinevere F Eden
Functional brain imaging studies have characterized the neural bases of voluntary movement for finger tapping in adults, but equivalent information for children is lacking. When contrasted to adults, one would expect children to have relatively greater activation, reflecting compensation for an underdeveloped motor system combined with less experience in the execution of voluntary movement. To test this hypothesis, we acquired functional magnetic resonance imaging (fMRI) data on 17 healthy right-handed children (7...
April 2, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29611255/translational-validity-of-pasat-and-the-effect-of-fatigue-and-mood-in-patients-with-relapsing-remitting-ms-a-functional-mri-study
#20
Dessislava Iancheva, Anastasiya G Trenova, Kiril Terziyski, Sevdalina Kandilarova, Stefka Mantarova
RATIONALE, AIMS, AND OBJECTIVES: Paced Auditory Serial Addition Test (PASAT) is used for assessment of information processing speed, attention, and working memory, which are the most frequently affected cognitive domains in multiple sclerosis (MS) patients, and may be significantly affected by fatigue. However, the effect of fatigue and mood on the PASAT performance in MS patients translationally validated by fMRI has not been studied yet. The aim of this study is to investigate the translational validity of the PASAT, using fMRI during a paced visual serial addition test (PVSAT) paradigm in patients with relapsing remitting MS (RRMS) and to assess the impact of fatigue and mood on test performance...
April 3, 2018: Journal of Evaluation in Clinical Practice
keyword
keyword
34802
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"