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Biological Psychiatry: Cognitive Neuroscience and Neuroimaging

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https://www.readbyqxmd.com/read/29104945/distinct-responses-to-predictable-and-unpredictable-threat-in-anxiety-pathologies-effect-of-panic-attack
#1
Christian Grillon, Katherine O'Connell, Lynne Lieberman, Gabriella Alvarez, Marilla Geraci, Daniel S Pine, Monique Ernst
Background: Delineating specific clinical phenotypes of anxiety disorders is a crucial step toward better classification and understanding of these conditions. The present study sought to identify differential aversive responses to predictable and unpredictable threat of shock in healthy comparisons and in non-medicated anxiety patients with and without a history of panic attacks (PAs). Method: 143 adults (72 healthy controls; 71 patients with generalized anxiety disorder (GAD) or/and social anxiety disorder (SAD), 24 with and 47 without PAs) were exposed to three conditions: 1) predictable shocks signaled by a cue, 2) unpredictable shocks, and 3) no shock...
October 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29085917/stability-of-cortical-thinning-in-persons-at-increased-familial-risk-for-major-depressive-disorder-across-8-years
#2
Xuejun Hao, Ardesheer Talati, Stewart A Shankman, Jun Liu, Jurgen Kaiser, Craig E Tenke, Virginia Warner, David Semanek, Priya J Wickramaratne, Myrna M Weissman, Jonathan Posner
BACKGROUND: A biological marker of vulnerability should precede onset of illness and be independent of disease course. We previously reported that cortical thinning may serve as a potential biomarker for risk for familial depression. We now test stability of the cortical thinning across 8 years, and whether thinning mediates associations between familial risk and depressive traits. METHOD: Participants were from a 3-generation family study of depression, where 2nd and 3rd generation offspring were characterized as being at high- or low-risk for depression based on the presence/absence of major depression in the 1st generation...
October 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29057370/conditional-human-immunodeficiency-virus-transactivator-of-transcription-protein-expression-induces-depression-like-effects-and-oxidative-stress
#3
Jay P McLaughlin, Jason J Paris, Dionyssios Mintzopoulos, Kristen A Hymel, Jae K Kim, Thomas J Cirino, Timothy E Gillis, Shainnel O Eans, Gordana D Vitaliano, Jessica M Medina, Richard C Krapf, Heather M Stacy, Marc J Kaufman
BACKGROUND: The prevalence of major depression in those with HIV/AIDS is substantially higher than in the general population. Mechanisms underlying this comorbidity are poorly understood. HIV-transactivator of transcription (Tat) protein, produced and excreted by HIV, could be involved. We determined whether conditional Tat protein expression in mice is sufficient to induce depression-like behaviors and oxidative stress. Further, as oxidative stress is associated with depression, we determined whether decreasing or increasing oxidative stress by administering methylsulfonylmethane (MSM) or diethylmaleate (DEM), respectively, altered depression-like behavior...
October 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29034354/prefrontal-connectivity-and-glutamate-transmission-relevance-to-depression-pathophysiology-and-ketamine-treatment
#4
Chadi G Abdallah, Christopher L Averill, Ramiro Salas, Lynnette A Averill, Philip R Baldwin, John H Krystal, Sanjay J Mathew, Daniel H Mathalon
BACKGROUND: Prefrontal global brain connectivity with global signal regression (GBCr) was proposed as a robust biomarker of depression, and was associated with ketamine's mechanism of action. Here, we investigated prefrontal GBCr in treatment-resistant depression (TRD) at baseline and following treatment. Then, we conducted a set of pharmacological challenges in healthy subjects to investigate the glutamate neurotransmission correlates of GBCr. METHODS: In study A, we used functional magnetic resonance imaging (fMRI) to compare GBCr between 22 TRD and 29 healthy control...
October 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29104944/psychotropic-medication-use-in-autism-spectrum-disorders-may-affect-functional-brain-connectivity
#5
Annika C Linke, Lindsay Olson, Yangfeifei Gao, Inna Fishman, Ralph-Axel Müller
Background: Prescription of psychotropic medications is common in autism spectrum disorders (ASDs), either off-label or to treat comorbid conditions such as ADHD or depression. Psychotropic medications are intended to alter brain function. Yet, studies investigating the functional brain organization in ASDs rarely take medication usage into account. This could explain some of the inconsistent findings of atypical brain network connectivity reported in the autism literature. Methods: The current study tested whether functional connectivity patterns, as assessed with functional magnetic resonance imaging (fMRI), differed in a cohort of 49 children and adolescents with ASDs based on psychotropic medication status, and in comparison with 50 matched typically developing (TD) participants...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29034353/the-default-mode-network-in-autism
#6
Aarthi Padmanabhan, Charles J Lynch, Marie Schaer, Vinod Menon
Autism spectrum disorder (ASD) is characterized by deficits in social communication and interaction. Since its discovery as a major functional brain system, the default mode network (DMN) has been implicated in a number of psychiatric disorders, including ASD. Here we review converging multimodal evidence for DMN dysfunction in the context of specific components of social cognitive dysfunction in ASD: 'self-referential processing' - the ability to process social information relative to oneself and 'theory of mind' or 'mentalizing' - the ability to infer the mental states such as beliefs, intentions, and emotions of others...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28993819/vigilance-the-amygdala-and-anxiety-in-youths-with-a-history-of-institutional-care
#7
Jennifer A Silvers, Bonnie Goff, Laurel J Gabard-Durnam, Dylan G Gee, Dominic S Fareri, Christina Caldera, Nim Tottenham
BACKGROUND: Early adversity is commonly associated with alterations of amygdala circuitry and increased anxiety. While many theoretical and clinical accounts of early adversity suggest that it increases vigilance to threatening stimuli, the present study tested whether heightened anxiety and amygdala reactivity associated with early adversity enhanced goal-directed attention for threatening stimuli. Showing this association would provide support that these adversity-induced alterations are developmental adaptations of the individual...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28924621/an-altered-scaffold-for-information-processing-cognitive-control-development-in-adolescents-with-autism
#8
Marjorie Solomon, Jeremy Hogeveen, Lauren Libero, Christine Nordahl
We investigated how cognitive neuroscientific studies during the last decade have advanced understanding of cognitive control from adolescence to young adulthood in individuals with autism spectrum disorder (ASD). To do so, we conducted a selective review of the larger structural, resting state, and diffusion imaging studies of brain regions and networks related to cognitive control that have been conducted since 2007 in individuals with ASD and typical development (TYP) ages 10 to 30 years that examined how these regions and networks support behavioral and task-based fMRI performance on tasks assessing cognitive control during this period...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28993818/metabotropic-glutamate-receptor-5-and-glutamate-involvement-in-major-depressive-disorder-a-multimodal-imaging-study
#9
Chadi G Abdallah, Jonas Hannestad, Graeme F Mason, Sophie E Holmes, Nicole DellaGioia, Gerard Sanacora, Lihong Jiang, David Matuskey, Ritvij Satodiya, Fabrizio Gasparini, Xin Lin, Jonathan Javitch, Beata Planeta, Nabeel Nabulsi, Richard E Carson, Irina Esterlis
BACKGROUND: Preclinical and postmortem studies have implicated the metabotropic glutamate receptor 5 (mGluR5) in the pathophysiology of major depressive disorder (MDD). The goal of the present study was to determine the role of mGluR5 in a large group of individuals with MDD compared to healthy controls (HC) in vivo with [(18)F]FPEB and positron emission tomography (PET). Furthermore, we sought to determine the role glutamate plays on mGluR5 availability in MDD. METHODS: Sixty-five participants (30 MDD and 35 HC) completed [(18)F]FPEB PET to estimate the primary outcome measure - mGluR5 volume of distribution (VT), and the secondary outcome measure - mGluR5 distribution volume ratio (DVR)...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28920096/competition-effects-in-visual-cortex-between-emotional-distractors-and-a-primary-task-in-remitted-depression
#10
Mary L Woody, Vladimir Miskovic, Max Owens, Kiera M James, Cope Feurer, Effua E Sosoo, Brandon E Gibb
BACKGROUND: Attentional biases, particularly difficulty inhibiting attention to negative stimuli, are implicated in risk for major depressive disorder (MDD). The current study examined a neural measure of attentional bias using a continuous index of visuocortical engagement (steady-state visual evoked potentials [SSVEPs]) before and after a negative mood induction in a population at high-risk for MDD recurrence due to a recently remitted MDD (rMDD) episode. Additionally, we examined working memory (WM) capacity as a potential moderator of the link between rMDD and visuocortical responses...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28890942/hyperactivation-in-cognitive-control-and-visual-attention-brain-regions-during-emotional-interference-in-adolescent-depression
#11
Natalie L Colich, Tiffany C Ho, Lara C Foland-Ross, Caitlin Eggleston, Sarah J Ordaz, Manpreet K Singh, Ian H Gotlib
BACKGROUND: Individuals with Major Depressive Disorder (MDD) are characterized by biases in attention to negative emotional material. While there is evidence that anomalous functioning in frontocingulate regions may underlie these biases, we know little about the neural correlates of negative emotional biases in depressed adolescents. METHODS: Eighteen adolescents diagnosed with MDD and 21 matched healthy control (CTL) adolescents underwent fMRI while performing an emotional distractor task...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28871288/error-specific-cognitive-control-alterations-in-generalized-anxiety-disorder
#12
James F Cavanagh, Alexandria Meyer, Greg Hajcak
BACKGROUND: Trait anxiety is reliably associated with enhanced neural responses following errors: meta analyses have described how the electrophysiological response to errors known as the Error-Related Negativity (ERN) is increased in anxious individuals, particularly in relation to worry. The ERN has been related to a broader class of control signals, particularly via a common theta band denominator, but it is unknown whether worry relates to these alternative medial frontal metrics...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28730183/aberrant-cerebellar-connectivity-in-bipolar-disorder-with-psychosis
#13
Ann K Shinn, Youkyung S Roh, Caitlin T Ravichandran, Justin T Baker, Dost Öngür, Bruce M Cohen
BACKGROUND: The cerebellum, which modulates affect and cognition in addition to motor functions, may contribute substantially to the pathophysiology of mood and psychotic disorders, such as bipolar disorder. A growing literature points to cerebellar abnormalities in bipolar disorder. However, no studies have investigated the topographic representations of resting state cerebellar networks in bipolar disorder, specifically their functional connectivity to cerebral cortical networks. METHODS: Using a well-defined cerebral cortical parcellation scheme as functional connectivity seeds, we compared ten cerebellar resting state networks in 49 patients with bipolar disorder and a lifetime history of psychotic features and 55 healthy control participants matched for age, sex, and image signal-to-noise ratio...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28730182/tracking-deceased-related-thinking-with-neural-pattern-decoding-of-a-cortical-basal-ganglia-circuit
#14
Noam Schneck, Stefan Haufe, Tao Tu, George A Bonanno, Kevin Ochsner, Paul Sajda, J John Mann
BACKGROUND: Deceased-related thinking is central to grieving and potentially critical to processing of the loss. Self-report measurements might fail to capture important elements of deceased-related thinking and processing. Here, we used a machine learning approach applied to fMRI - known as neural decoding - to develop a measure of ongoing deceased-related processing. METHODS: 23 subjects grieving the loss of a first-degree relative, spouse or partner within 14 months underwent two fMRI tasks...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28989984/hippocampal-volume-changes-following-electroconvulsive-therapy-a-systematic-review-and-meta-analysis
#15
Samuel T Wilkinson, Gerard Sanacora, Michael H Bloch
INTRODUCTION: Reduced hippocampal volume is one of the most consistent morphological findings in Major Depressive Disorder (MDD). Electroconvulsive therapy (ECT) is the most effective therapy for MDD, yet its mechanism of action remains poorly understood. Animal models show that ECT induces several neuroplastic processes, which lead to hippocampal volume increases. We conducted a meta-analysis of ECT studies in humans to investigate its effects on hippocampal volume. METHODS: PubMed was searched for studies examining hippocampal volume before and after ECT...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28944306/reward-related-neural-correlates-of-antisocial-behavior-and-callous-unemotional-traits-in-young-men
#16
Laura Murray, Daniel S Shaw, Erika E Forbes, Luke W Hyde
BACKGROUND: Individuals involved in antisocial behavior often engage in excessive reward-driven behavior even in the face of severe punishments including incarceration. However, the neural mechanisms of reward processing in antisocial behavior have not been examined while considering the heterogeneity of antisocial behavior and specific phases of reward and loss processing. In this study, we investigate the relationship between antisocial behavior, callous-unemotional traits, and neural activity during the anticipation and receipt of rewards and losses...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28713866/implications-of-the-hierarchical-structure-of-psychopathology-for-psychiatric-neuroimaging
#17
David H Zald, Benjamin B Lahey
Research into the neurobiological substrates of psychopathology has been impeded by heterogeneity within diagnostic categories, comorbidity among mental disorders, and the presence of symptoms that transcend diagnostic categories. Solutions to these issues increasingly focus neurobiological research on isolated or narrow groupings of symptoms or functional constructs rather than categorical diagnoses. Here we argue for a more integrative approach that also incorporates the broad hierarchical structure of psychopathological symptoms and their etiological mechanisms...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28584882/increases-in-intrinsic-thalamocortical-connectivity-and-overall-cognition-following-cognitive-remediation-in-chronic-schizophrenia
#18
Ian S Ramsay, Tasha M Nienow, Angus W MacDonald
BACKGROUND: Thalamic projections to the prefrontal cortex (PFC) are critical for cognition, and disruptions in these circuits are thought to underlie the pathophysiology of schizophrenia. Cognitive remediation (REM) is a behavioral intervention that holds promise for improving cognition and functioning in schizophrenia, however the extent to which it affects thalamo-prefrontal connections has not been researched. This study sought to determine whether patients with schizophrenia who undergo a placebo-controlled trial of REM show increased functional connectivity between the thalamus and PFC, and whether these changes correspond to improvements in cognition...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28480336/longitudinal-relationships-among-activity-in-attention-redirection-neural-circuitry-and-symptom-severity-in-youth
#19
Michele A Bertocci, Genna Bebko, Amanda Dwojak, Satish Iyengar, Cecile D Ladouceur, Jay C Fournier, Amelia Versace, Susan B Perlman, Jorge R C Almeida, Michael J Travis, Mary Kay Gill, Lisa Bonar, Claudiu Schirda, Vaibhav A Diwadkar, Jeffrey L Sunshine, Scott K Holland, Robert A Kowatch, Boris Birmaher, David Axelson, Sarah M Horwitz, Thomas Frazier, L Eugene Arnold, Mary A Fristad, Eric A Youngstrom, Robert L Findling, Mary L Phillips
BACKGROUND: Changes in neural circuitry function may be associated with longitudinal changes in psychiatric symptom severity. Identification of these relationships may aid in elucidating the neural basis of psychiatric symptom evolution over time. We aimed to distinguish these relationships using data from the Longitudinal Assessment of Manic Symptoms (LAMS) cohort. METHODS: Forty-one youth completed two study visits (mean=21.3 months). Elastic-net regression (Multiple response Gaussian family) identified emotional regulation neural circuitry that changed in association with changes in depression, mania, anxiety, affect lability, and positive mood and energy dysregulation, accounting for clinical and demographic variables...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28435932/default-mode-network-subsystems-are-differentially-disrupted-in-posttraumatic-stress-disorder
#20
Danielle R Miller, Scott M Hayes, Jasmeet P Hayes, Jeffrey M Spielberg, Ginette Lafleche, Mieke Verfaellie
BACKGROUND: Posttraumatic stress disorder (PTSD) is a psychiatric disorder characterized by debilitating re-experiencing, avoidance, and hyperarousal symptoms following trauma exposure. Recent evidence suggests that individuals with PTSD show disrupted functional connectivity in the default mode network, an intrinsic network that consists of a midline core, a medial temporal lobe (MTL) subsystem, and a dorsomedial prefrontal cortex (dMPFC) subsystem. The present study examined whether functional connectivity in these subsystems is differentially disrupted in PTSD...
May 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
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