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Brain Imaging and Behavior

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https://www.readbyqxmd.com/read/27882449/diametrical-relationship-between-gray-and-white-matter-volumes-in-autism-spectrum-disorder-and-schizophrenia
#1
Serge A Mitelman, Marie-Cecile Bralet, M Mehmet Haznedar, Eric Hollander, Lina Shihabuddin, Erin A Hazlett, Monte S Buchsbaum
Autism spectrum disorders and schizophrenia have been variously characterized as separate nosological entities with overlapping deficits in social cognition or diametrical extremes of a phenotypic continuum. This study aimed to determine how these models apply to comparative morphometric data. MRI scans of the brain were obtained in 49 subjects with schizophrenia, 20 subjects with autism and 39 healthy controls. Images were parcellated into 40 Brodmann areas and entered into repeated-measures ANOVA for between-group comparison of global and localized gray and white matter volumes...
November 23, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27848149/midlife-managerial-experience-is-linked-to-late-life-hippocampal-morphology-and-function
#2
C Suo, N Gates, M Fiatarone Singh, N Saigal, G C Wilson, J Meiklejohn, P Sachdev, H Brodaty, W Wen, N Singh, B T Baune, M Baker, N Foroughi, Y Wang, Michael J Valenzuela
An active cognitive lifestyle has been suggested to have a protective role in the long-term maintenance of cognition. Amongst healthy older adults, more managerial or supervisory experiences in midlife are linked to a slower hippocampal atrophy rate in late life. Yet whether similar links exist in individuals with Mild Cognitive Impairment (MCI) is not known, nor whether these differences have any functional implications. 68 volunteers from the Sydney SMART Trial, diagnosed with non-amnestic MCI, were divided into high and low managerial experience (HME/LME) during their working life...
November 15, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27848148/disrupted-functional-connectivity-density-in-irritable-bowel-syndrome-patients
#3
Yifei Weng, Rongfeng Qi, Chang Liu, Jun Ke, Qiang Xu, Fangyu Wang, Long Jiang Zhang, Guang Ming Lu
Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder resulting from a dysregulation of the brain-gut axis. However, its exact neural substrate still remains unclear. This study investigated the changes of intrinsic whole brain functional connectivity pattern in IBS using functional connectivity density (FCD). We acquired resting-state functional magnetic resonance imaging (rs-fMRI) data from thirty-two IBS patients and thirty-two healthy controls. Functional connectivity density, a data-driven algorithm, was used to compute the long-range and short-range FCD values for each voxel in the brain of each subject, implying the amount of distant and local functional connections of cortical hubs...
November 15, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27832450/neural-correlates-of-correct-and-failed-response-inhibition-in-heavy-versus-light-social-drinkers-an-fmri-study-during-a-go-no-go-task-by-healthy-participants
#4
Salvatore Campanella, Julie Absil, Carina Carbia Sinde, Elisa Schroder, Philippe Peigneux, Mathieu Bourguignon, Mathieu Petieau, Thierry Metens, Mustapha Nouali, Serge Goldman, Guy Cheron, Paul Verbanck, Xavier Detiège
The ability to suppress responses that are inappropriate, as well as the mechanisms monitoring the accuracy of actions in order to compensate for errors, is central to human behavior. Neural alterations that prevent stopping an inaccurate response, combined with a decreased ability of error monitoring, are considered to be prominent features of alcohol abuse. Moreover, (i) alterations of these processes have been reported in heavy social drinkers (i.e. young healthy individuals who do not yet exhibit a state of alcohol dependence); and (ii) through longitudinal studies, these alterations have been shown to underlie subsequent disinhibition that may lead to future alcohol use disorders...
November 10, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27832449/abnormal-structure-and-functional-connectivity-of-the-anterior-insula-at-pain-free-periovulation-is-associated-with-perceived-pain-during-menstruation
#5
Wang-Huan Dun, Jing Yang, Ling Yang, Dun Ding, Xue-Ying Ma, Feng-Li Liang, Karen M von Deneen, Shao-Hui Ma, Xiao-Ling Xu, Jixin Liu, Ming Zhang
Neuroimaging studies have demonstrated the critical role of the insula in pain pathways and its close relation with the perceived intensity of nociceptive stimuli. We aimed to identify the structural and functional characteristics of the insula during periovulatory phase in women with primary dysmenorrhea (PDM), and further investigate its association with the intensity of perceived pain during menstruation. Optimized voxel-based morphometry and functional connectivity (FC) analyses were applied by using 3-dimensional T1-weighted and resting functional magnetic resonance imaging (fMRI) in 36 patients at the peri-ovulation phase and 29 age-, education-, and gender-matched healthy controls (HC)...
November 10, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27817134/insulin-like-growth-factor-binding-protein-2-interactions-with-alzheimer-s-disease-biomarkers
#6
Elizabeth M Lane, Timothy J Hohman, Angela L Jefferson
Plasma levels of insulin-like growth factor binding protein-2 (IGFBP-2) have been associated with Alzheimer's disease (AD) and brain atrophy. Some evidence suggests a potential synergistic effect of IGFBP-2 and AD neuropathology on neurodegeneration, while other evidence suggests the effect of IGFBP-2 on neurodegeneration is independent of AD neuropathology. Therefore, the current study investigated the interaction between plasma IGFBP-2 and cerebrospinal fluid (CSF) biomarkers of AD neuropathology on hippocampal volume and cognitive function...
November 5, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27815774/the-topological-organization-of-white-matter-network-in-internet-gaming-disorder-individuals
#7
Jinquan Zhai, Lin Luo, Lijun Qiu, Yongqiang Kang, Bo Liu, Dahua Yu, Xiaoqi Lu, Kai Yuan
White matter (WM) integrity abnormalities had been reported in Internet gaming disorder (IGD). Diffusion tensor imaging (DTI) tractography allows identification of WM tracts, potentially providing information about the integrity and organization of relevant underlying WM fiber tracts' architectures, which has been used to investigate the connectivity of cortical and subcortical structures in several brain disorders. Unfortunately, relatively little is known about the thoroughly circuit-level characterization of topological property changes of WM network with IGD...
November 4, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27815773/the-neural-correlates-of-priming-emotion-and-reward-systems-for-conflict-processing-in-alcoholics
#8
T Schulte, Y-C Jung, E V Sullivan, A Pfefferbaum, M Serventi, E M Müller-Oehring
Emotional dysregulation in alcoholism (ALC) may result from disturbed inhibitory mechanisms. We therefore tested emotion and alcohol cue reactivity and inhibitory processes using negative priming. To test the neural correlates of cue reactivity and negative priming, 26 ALC and 26 age-matched controls underwent functional MRI performing a Stroop color match-to-sample task. In cue reactivity trials, task-irrelevant emotion and alcohol-related pictures were interspersed between color samples and color words. In negative priming trials, pictures primed the semantic content of an alcohol or emotion Stroop word...
November 4, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27812851/pineal-volume-and-evening-melatonin-in-young-people-with-affective-disorders
#9
Joanne S Carpenter, Amy C Abelmann, Sean N Hatton, Rébecca Robillard, Daniel F Hermens, Maxwell R Bennett, Jim Lagopoulos, Ian B Hickie
Affective disorders in young people have been associated with disruptions in circadian rhythms, including abnormalities in secretion of the pineal hormone melatonin. Previous research reports relationships between pineal gland volumes, melatonin secretion, and sleep-wake cycles, but the relationship between these factors has not been explored in affective disorders. This study aimed to characterize these factors and explore associations with mood symptoms and functioning in a sample of young people with affective disorders...
November 3, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27796732/white-matter-microstructure-of-patients-with-neurofibromatosis-type-1-and-its-relation-to-inhibitory-control
#10
M Koini, S A R B Rombouts, I M Veer, M A Van Buchem, S C J Huijbregts
Neurofibromatosis Type 1 (NF1) is commonly associated with deficits in executive functions such as working memory and inhibitory control. A valid biomarker to describe the pathological basis of these deficits in NF1 is not available. The aim of this study was to investigate whether any abnormalities in white matter integrity of the executive function related anterior thalamic radiation (ATR), cingulate bundle (CB), and superior longitudinal fasciculus (SLF) may be regarded as a pathological basis for inhibitory control deficits in adolescents with NF1...
October 29, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27796731/mental-speed-is-associated-with-the-shape-irregularity-of-white-matter-mri-hyperintensity-load
#11
Catharina Lange, Per Suppa, Anja Mäurer, Kerstin Ritter, Uwe Pietrzyk, Elisabeth Steinhagen-Thiessen, Jochen B Fiebach, Lothar Spies, Ralph Buchert
Brain MRI white matter hyperintensities (WMHs) are common in elderly subjects. Their impact on cognition, however, appears highly variable. Complementing conventional scoring of WMH load (volume and location) by quantitative characterization of the shape irregularity of WMHs might improve the understanding of the relationship between WMH load and cognitive performance. Here we propose the "confluency sum score" (COSU) as a marker of the total shape irregularity of WMHs in the brain. The study included two independent patient samples: 87 cognitively impaired geriatric inpatients from a prospective neuroimaging study (iDSS) and 198 subjects from the National Alzheimer's Coordinating Center (NACC) database (132 with, 66 w/o cognitive impairment)...
October 28, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27787708/neuropsychiatric-symptoms-of-cholinergic-deficiency-occur-with-degradation-of-the-projections-from-the-nucleus-basalis-of-meynert
#12
Jan Willem van Dalen, Matthan W A Caan, Willem A van Gool, Edo Richard
This study aims to evaluate the relation between a cluster of neuropsychiatric symptoms related to cholinergic deficiency and degradation of the cortical cholinergic projections which project from the nucleus basalis of Meynert to the cerebral cortex. An atlas of the pathway from the nucleus basalis to the cortex (NbM cortical pathway) was constructed using diffusion tensor imaging and tractography in 87 memory clinic patients. Structural degradation was considered to be represented by lower fractional anisotropy (FA) and higher mean diffusivity (MD)...
October 27, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27771857/brain-alterations-in-low-frequency-fluctuations-across-multiple-bands-in-obsessive-compulsive-disorder
#13
Mònica Giménez, Andrés Guinea-Izquierdo, Victoria Villalta-Gil, Ignacio Martínez-Zalacaín, Cinto Segalàs, Marta Subirà, Eva Real, Jesús Pujol, Ben J Harrison, Josep Maria Haro, Joao R Sato, Marcelo Q Hoexter, Narcís Cardoner, Pino Alonso, José Manuel Menchón, Carles Soriano-Mas
The extent of functional abnormalities in frontal-subcortical circuits in obsessive-compulsive disorder (OCD) is still unclear. Although neuroimaging studies, in general, and resting-state functional Magnetic Resonance Imaging (rs-fMRI), in particular, have provided relevant information regarding such alterations, rs-fMRI studies have been typically limited to the analysis of between-region functional connectivity alterations at low-frequency signal fluctuations (i.e., <0.08 Hz). Conversely, the local attributes of Blood Oxygen Level Dependent (BOLD) signal across different frequency bands have been seldom studied, although they may provide valuable information...
October 22, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27766588/different-spatial-patterns-of-brain-atrophy-and-global-functional-connectivity-impairments-in-major-depressive-disorder
#14
Chuanjun Zhuo, Jiajia Zhu, Chunli Wang, Hongru Qu, Xiaolei Ma, Wen Qin
Alterations in grey matter structure and functional connectivity (FC) are pathological features of major depressive disorder (MDD). However, the relationship between brain structural and functional impairments in MDD remains uncertain. Thus, the aim of this study was to investigate the relationship between alterations in grey matter volume (GMV) and resting-state global functional connectivity density (rs-gFCD) in MDD. Forty-five patients with MDD and 48 healthy controls underwent structural and resting-state functional magnetic resonance imaging (fMRI)...
October 20, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27766587/brain-injury-in-women-experiencing-intimate-partner-violence-neural-mechanistic-evidence-of-an-invisible-trauma
#15
Eve Valera, Aaron Kucyi
Traumatic brain injury (TBI) in women experiencing intimate-partner violence (IPV) is common, and IPV afflicts 30 % of women worldwide. However, the neurobiology and related sequelae of these TBIs have never been systematically examined. Consequently, TBI treatments are typically absent and IPV interventions are inadequate. There has been a call for a comprehensive assessment of IPV-related TBIs and their relationship to aspects of women's cognitive and neural functioning. In response, we examined brain-network organization associated with TBI and its cognitive effects using clinical interviews and neuropsychological measures as well as structural and functional Magnetic Resonance Imaging (fMRI) in women experiencing IPV-related TBI...
October 20, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27766586/brain-structure-and-function-in-patients-with-ovarian-cancer-treated-with-first-line-chemotherapy-a-pilot-study
#16
D D Correa, J C Root, M Kryza-Lacombe, M Mehta, S Karimi, M L Hensley, N Relkin
Women with ovarian cancer often undergo chemotherapy involving multiple agents. However, little is known about treatment-related central neurotoxicity in this population. The goal of this cross-sectional study was to assess brain structure and function and neurocognitive abilities in patients with ovarian cancer following first-line chemotherapy. Eighteen patients with ovarian, peritoneal and fallopian tube cancer and eighteen healthy controls matched for gender, age and education participated in the study...
October 20, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27757821/distinct-effects-of-late-adulthood-cognitive-and-physical-activities-on-gray-matter-volume
#17
Eider M Arenaza-Urquijo, Robin de Flores, Julie Gonneaud, Miranka Wirth, Valentin Ourry, William Callewaert, Brigitte Landeau, Stéphanie Egret, Florence Mézenge, Béatrice Desgranges, Gaël Chételat
Engagement in cognitive activity (CA) and physical activity (PA) during the lifespan may counteract brain atrophy later in life. Here, we investigated engagement in CA and PA during late adulthood in association with gray matter volume (GM) in normal older adults, with special focus on the hippocampus. Forty-five cognitively normal older individuals (mean age: 72) underwent T1-weighted MRI and self-reported CA and PA assessment. Whole brain voxel-wise multiple regression models were carried out to assess the relationships between CA, PA and GM volume adjusted by age and sex...
October 18, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27757820/increased-brain-connectivity-and-activation-after-cognitive-rehabilitation-in-parkinson-s-disease-a-randomized-controlled-trial
#18
María Díez-Cirarda, Natalia Ojeda, Javier Peña, Alberto Cabrera-Zubizarreta, Olaia Lucas-Jiménez, Juan Carlos Gómez-Esteban, Maria Ángeles Gómez-Beldarrain, Naroa Ibarretxe-Bilbao
Cognitive rehabilitation programs have demonstrated efficacy in improving cognitive functions in Parkinson's disease (PD), but little is known about cerebral changes associated with an integrative cognitive rehabilitation in PD. To assess structural and functional cerebral changes in PD patients, after attending a three-month integrative cognitive rehabilitation program (REHACOP). Forty-four PD patients were randomly divided into REHACOP group (cognitive rehabilitation) and a control group (occupational therapy)...
October 18, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27757819/brain-network-connectivity-in-women-exposed-to-intimate-partner-violence-a-graph-theory-analysis-study
#19
Annerine Roos, Jean-Paul Fouche, Dan J Stein
Evidence suggests that women who suffer from intimate partner violence (IPV) and posttraumatic stress disorder (PTSD) have structural and functional alterations in specific brain regions. Yet, little is known about how brain connectivity may be altered in individuals with IPV, but without PTSD. Women exposed to IPV (n = 18) and healthy controls (n = 18) underwent structural brain imaging using a Siemens 3T MRI. Global and regional brain network connectivity measures were determined, using graph theory analyses...
October 18, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27752922/electrophysiological-indices-of-aberrant-error-processing-in-adults-with-adhd-a-new-region-of-interest
#20
Pál Czobor, Brigitta Kakuszi, Kornél Németh, Livia Balogh, Szilvia Papp, László Tombor, István Bitter
Deficits in error-processing are postulated in core symptoms of ADHD. Our goal was to investigate the neurophysiological basis of abnormal error-processing and adaptive adjustments in ADHD, and examine whether error-related alterations extend beyond traditional Regions of Interest (ROIs), particularly to those involved in adaptive adjustments, such as the Salience Network system. We obtained event-related potentials (ERPs) during a Go/NoGo task from 22 adult-ADHD patients and 29 matched healthy controls using a high-density 256-electrode array...
October 17, 2016: Brain Imaging and Behavior
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