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medial frontal negativity

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https://www.readbyqxmd.com/read/29332091/the-association-among-default-mode-network-functional-connectivity-mentalization-and-psychopathology-in-a-nonclinical-sample-an-eloreta-study
#1
Benedetto Farina, Giacomo Della Marca, Giulia Maestoso, Noemi Amoroso, Enrico Maria Valenti, Giuseppe Alessio Carbone, Chiara Massullo, Anna Contardi, Claudio Imperatori
AIMS: We investigated default mode network (DMN) electroencephalography (EEG) functional connectivity differences between individuals with self-reported high mentalization capability and low psychopathological symptoms, versus participants with mentalization impairments and high psychopathological symptoms. METHODS: Forty-nine students (35 women) with a mean age of 22.92 ± 2.53 years were administered the Mentalization Questionnaire (MZQ) and the Symptom Checklist-90-Revised...
January 13, 2018: Psychopathology
https://www.readbyqxmd.com/read/29318488/disrupted-topological-organization-of-the-frontal-mesolimbic-network-in-obese-patients
#2
Qianqian Meng, Yu Han, Gang Ji, Guanya Li, Yang Hu, Li Liu, Qingchao Jin, Karen M von Deneen, Jizheng Zhao, Guangbin Cui, Huaning Wang, Dardo Tomasi, Nora D Volkow, Jixin Liu, Yongzhan Nie, Yi Zhang, Gene-Jack Wang
Neuroimaging studies have revealed brain functional abnormalities in frontal-mesolimbic regions in obesity. However, the effects of obesity on brain network topology remains largely unknown. In the current study, we employed resting-state functional magnetic resonance imaging and graph theory methods to investigate obesity-related changes in brain network topology in 26 obese patients and 28 normal weight subjects. Results revealed that the whole-brain networks of the two groups exhibited typical features of small-world topology...
January 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29309827/adverse-childhood-experiences-are-associated-with-self-regulation-and-the-magnitude-of-the-error-related-negativity-difference
#3
Christine L Lackner, Diane L Santesso, Jane Dywan, Deborah O'Leary, Terrance J Wade, Sidney J Segalowitz
Trauma and stress, like that which occurs as a result of adverse childhood experiences (ACEs), can change brain structure and function, especially in medial prefrontal and hippocampal areas, and can impact self-regulatory skill. The error-related negativity (ERN) is a medial frontal negative event-related potential (ERP) component that is more negative when a participant makes an erroneous versus correct response. We investigated the association of ACEs to adolescents' ERN and self-regulation. Forty-three 12-15 year olds performed a flanker task while EEG data were recorded...
January 5, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29273689/multiple-pathways-of-reserve-simultaneously-present-in-cognitively-normal-older-adults
#4
Hwamee Oh, Qolamreza R Razlighi, Yaakov Stern
OBJECTIVE: To examine neural correlates of intellectual activity underlying multiple pathways imparting reserve by testing that higher intellectual activity is associated with lower brain amyloid pathology, greater gray matter (GM) volume, and differential task-evoked brain activation levels as a function of amyloid positivity status among clinically intact older adults. METHODS: Eighty-two cognitively normal older adults and 46 healthy young participants underwent fMRI during task switching...
December 22, 2017: Neurology
https://www.readbyqxmd.com/read/29249364/resting-state-fmri-studies-in-spg4-linked-hereditary-spastic-paraplegia
#5
Xinxin Liao, Mufang Huang, Wu Xing, Xinwei Wu, Weihua Liao, Xiaoyi Wang, Beisha Tang, Lu Shen
OBJECTIVE: The study aimed to investigate the functional alterations of spontaneous brain activity in patients with spastic paraplegia type 4 (SPG4), and the relationship with the severity of spasticity. METHODS: Twelve patients with SPG4 and ten healthy controls underwent resting-state functional magnetic resonance imaging (rs-fMRI). Amplitude of low-frequency fluctuation (ALFF) and regional homogeneity (ReHo) were used to characterize regional neural function, and functional connectivity (FC) was used to evaluate the functional integration of the brain network...
January 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29247749/regional-and-long-range-neural-synchronization-abnormality-during-passive-hyperthermia
#6
Wei Han, Shaowen Qian, Qingjun Jiang, Kai Liu, Bo Li, Gang Sun
Passive hyperthermia would impair wide-domain cognitive performances (e.g. attention, working memory), which may involve abnormal regional and long-range neural activity. Combining the regional homogeneity (ReHo) and seed-based functional connectivity analysis, this study investigated the regional and long-range neural synchronization abnormality during passive hyperthermia. We acquired the resting-state blood oxygenation level dependent (BOLD) data from twenty-three healthy male participants in two simulated thermal conditions: normothermic condition (NC) with temperature at 25°C for 1 h and hyperthermic condition (HC) with temperature at 50°C for 1 h...
December 13, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29247631/the-effects-of-trait-impulsivity-on-proactive-and-reactive-interference-control
#7
Ling Xiang, Yan Chen, Antao Chen, Fenghua Zhang, Fuming Xu, Baoxi Wang
The current study used event-related brain potentials (ERPs) to explore whether self-reported trait impulsivity in healthy individuals might be differentially related to proactive and reactive interference control. Participants with high and low impulsivity (HI and LI, respectively) performed a modified version of the prime-target interference task. Proactive interference control was induced in the mostly incongruent (MI) context and reactive interference control was induced in the mostly congruent (MC) context...
December 13, 2017: Brain Research
https://www.readbyqxmd.com/read/29243121/neural-processing-of-food-and-monetary-rewards-is-modulated-by-metabolic-state
#8
Mushfa Yousuf, Marcus Heldmann, Martin Göttlich, Thomas F Münte, Nuria Doñamayor
In humans, food is considered a powerful primary reinforcer, whereas money is a secondary reinforcer, as it gains a value through learning experience. Here, we aimed to identify the neural regions supporting the processing of food-related reinforcers, relate it to the neural underpinnings of monetary reinforcers, and explore their modulation by metabolic state (hunger vs satiety). Twenty healthy male participants were tested in two experimental sessions, once hungry and once satiated, using functional magnetic resonance imaging...
December 14, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29228201/widespread-brain-tau-and-its-association-with-ageing-braak-stage-and-alzheimer-s-dementia
#9
Val J Lowe, Heather J Wiste, Matthew L Senjem, Stephen D Weigand, Terry M Therneau, Bradley F Boeve, Keith A Josephs, Ping Fang, Mukesh K Pandey, Melissa E Murray, Kejal Kantarci, David T Jones, Prashanthi Vemuri, Jonathan Graff-Radford, Christopher G Schwarz, Mary M Machulda, Michelle M Mielke, Rosebud O Roberts, David S Knopman, Ronald C Petersen, Clifford R Jack
Autopsy data have proposed that a topographical pattern of tauopathy occurs in the brain with the development of dementia due to Alzheimer's disease. We evaluated the findings of tau-PET to better understand neurofibrillary tangle development as it is seen in cognitively unimpaired and impaired individuals. The evolution of Alzheimer's disease tauopathy in cognitively unimpaired individuals needs to be examined to better understand disease pathogenesis. Tau-PET was performed in 86 cognitively impaired individuals who all had abnormal amyloid levels and 601 cognitively unimpaired individuals...
December 8, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29226961/detection-of-deception-event-related-potential-markers-of-attention-and-cognitive-control-during-intentional-false-responses
#10
Henning Gibbons, Robert Schnuerch, Christina Wittinghofer, Anne-Simone Armbrecht, Jutta Stahl
Successful deception requires the coordination of multiple mental processes, such as attention, conflict monitoring, and the regulation of emotion. We employed a simple classification task, assessing ERPs to further investigate the attentional and cognitive control components of (instructed) deception. In Experiment 1, 20 participants repeatedly categorized visually presented names of five animals and five plants. Prior to the experiment, however, each participant covertly selected one animal and one plant for deliberate misclassification...
December 11, 2017: Psychophysiology
https://www.readbyqxmd.com/read/29225975/correlation-between-traits-of-emotion-based-impulsivity-and-intrinsic-default-mode-network-activity
#11
Jizheng Zhao, Dardo Tomasi, Corinde E Wiers, Ehsan Shokri-Kojori, Şükrü B Demiral, Yi Zhang, Nora D Volkow, Gene-Jack Wang
Negative urgency (NU) and positive urgency (PU) are implicated in several high-risk behaviors, such as eating disorders, substance use disorders, and nonsuicidal self-injury behavior. The current study aimed to explore the possible link between trait of urgency and brain activity at rest. We assessed the amplitude of low-frequency fluctuations (ALFF) of the resting-state functional magnetic resonance imaging (fMRI) signal in 85 healthy volunteers. Trait urgency measures were related to ALFF in the lateral orbitofrontal cortex, dorsolateral prefrontal cortex, ventral and dorsal medial frontal cortex, anterior cingulate, and posterior cingulate cortex/precuneus...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29209234/altered-brain-functional-connectivity-in-betel-quid-dependent-chewers
#12
Xiaojun Huang, Weidan Pu, Haihong Liu, Xinmin Li, Andrew J Greenshaw, Serdar M Dursun, Zhimin Xue, Zhening Liu
Background: Betel quid (BQ) is a common psychoactive substance worldwide with particularly high usage in many Asian countries. This study aimed to explore the effect of BQ use on functional connectivity by comparing global functional brain networks and their subset between BQ chewers and healthy controls (HCs). Methods: Resting-state functional magnetic resonance imaging (fMRI) was obtained from 24 betel quid-dependent (BQD) male chewers and 27 healthy male individuals on a 3...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29204343/episodic-memory-after-trauma-exposure-medial-temporal-lobe-function-is-positively-related-to-re-experiencing-and-inversely-related-to-negative-affect-symptoms
#13
Jennifer S Stevens, Renuka Reddy, Ye Ji Kim, Sanne J H van Rooij, Timothy D Ely, Stephan Hamann, Kerry J Ressler, Tanja Jovanovic
Hippocampal structure is particularly sensitive to trauma and other stressors. However, previous findings linking hippocampal function with trauma-related psychopathology have been mixed. Heterogeneity in psychological responses to trauma has not been considered with respect to hippocampal function and may contribute to mixed findings. To address these issues, we examined associations between data-driven symptom dimensions and episodic memory formation, a key function of the hippocampus, in a trauma-exposed sample...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29165654/infusions-of-nerve-growth-factor-into-the-developing-frontal-cortex-leads-to-deficits-in-behavioral-flexibility-and-increased-perseverance
#14
Sagar J Desai, Brian L Allman, Nagalingam Rajakumar
In the pursuit of further establishing a neurodevelopmental animal model to investigate the mechanisms underlying impaired executive function, a core and severely debilitating symptom of schizophrenia, we sought to characterize the deficits in behavioral flexibility in adult rats following neonatal infusions of nerve growth factor (NGF) into the medial part of the developing frontal cortex. Our previous studies using this neonatal frontal cortical lesion model have shown that it leads to adult-onset positive and negative symptom-like features, and several neuropathological abnormalities of schizophrenia...
November 17, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29159058/local-and-distant-relationships-between-amyloid-tau-and-neurodegeneration-in-alzheimer-s-disease
#15
Leonardo Iaccarino, Gautam Tammewar, Nagehan Ayakta, Suzanne L Baker, Alexandre Bejanin, Adam L Boxer, Maria Luisa Gorno-Tempini, Mustafa Janabi, Joel H Kramer, Andreas Lazaris, Samuel N Lockhart, Bruce L Miller, Zachary A Miller, James P O'Neil, Rik Ossenkoppele, Howard J Rosen, Daniel R Schonhaut, William J Jagust, Gil D Rabinovici
The relationships between β-amyloid (Aβ), tau and neurodegeneration within Alzheimer's Disease pathogenesis are not fully understood. To explore these associations in vivo, we evaluated 30 Aβ PET-positive patients (mean ± sd age 62.4 ± 8.3) with mild probable AD and 12 Aβ PET-negative healthy controls (HC) (mean ± sd age 77.3 ± 6.9) as comparison. All participants underwent 3 T MRI, 11C-PiB (Aβ) PET and 18F-AV1451 (tau) PET. Multimodal correlation analyses were run at both voxel- and region-of-interest levels...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29126885/medial-frontal-cortex-response-to-unexpected-motivationally-salient-outcomes
#16
Heather E Soder, Geoffrey F Potts
The medial frontal cortex (MFC) plays a central role allocating resources to process salient information, in part by responding to prediction errors. While there is some recent debate, the feedback-related negativity (FRN) is thought to index a reward prediction error by signaling outcomes that are worse than expected. A recent study utilizing electric shock provided data inconsistent with these accounts and reported that the omission of both appetitive (money) and aversive outcomes (electric shocks) elicited a medial frontal negativity...
November 7, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29115706/seizure-susceptible-brain-regions-in-glioblastoma-identification-of-patients-at-risk
#17
N Cayuela, M Simó, C Majós, X Rifà-Ros, J Gállego Pérez-Larraya, P Ripollés, N Vidal, J Miró, F Gil, M Gil-Gil, G Plans, F Graus, J Bruna
BACKGROUND AND PURPOSE: The main aim of this study was to identify which patients with glioblastoma multiforme (GBM) have a higher risk of presenting seizures during follow-up. METHODS: Patients with newly diagnosed GBM were reviewed (n = 306) and classified as patients with (Group 1) and without (Group 2) seizures at onset. Group 2 was split into patients with seizures during follow-up (Group 2A) and patients who never had seizures (Group 2B). The anatomical location of GBM was identified and compared by voxel-based lesion symptom mapping (discovery set)...
November 8, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29077553/greater-body-mass-index-is-associated-with-reduced-frontal-cortical-volumes-among-adolescents-with-bipolar-disorder
#18
Alvi H Islam, Arron W S Metcalfe, Bradley J MacIntosh, Daphne J Korczak, Benjamin I Goldstein
BACKGROUND: Higher body mass index (BMI) and obesity is common among youth with bipolar disorder (BD) and is associated with greater psychiatric illness severity, including suicidality. Obesity has been associated with frontal, temporal and subcortical volumetric reductions in adults with BD. We examined the neurostructural correlates of BMI in adolescents early in their course of BD. METHODS: We processed T1-weighted images of adolescents with BD and psychiatrically healthy controls using FreeSurfer to derive a priori region of interest (ROI) volumes/cortical thickness for the frontal lobe (FL), prefrontal cortex (PFC) and orbitofrontal cortex (OFC) as well as volumes for the amygdala and hippocampus...
October 27, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29018368/biclustered-independent-component-analysis-for-complex-biomarker-and-subtype-identification-from-structural-magnetic-resonance-images-in-schizophrenia
#19
Cota Navin Gupta, Eduardo Castro, Srinivas Rachkonda, Theo G M van Erp, Steven Potkin, Judith M Ford, Daniel Mathalon, Hyo Jong Lee, Bryon A Mueller, Douglas N Greve, Ole A Andreassen, Ingrid Agartz, Andrew R Mayer, Julia Stephen, Rex E Jung, Juan Bustillo, Vince D Calhoun, Jessica A Turner
Clinical and cognitive symptoms domain-based subtyping in schizophrenia (Sz) has been critiqued due to the lack of neurobiological correlates and heterogeneity in symptom scores. We, therefore, present a novel data-driven framework using biclustered independent component analysis to detect subtypes from the reliable and stable gray matter concentration (GMC) of patients with Sz. The developed methodology consists of the following steps: source-based morphometry (SBM) decomposition, selection and sorting of two component loadings, subtype component reconstruction using group information-guided ICA (GIG-ICA)...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28983326/inter-trial-coherence-of-medial-frontal-theta-oscillations-linked-to-differential-feedback-processing-in-youth-and-young-adults-with-autism
#20
Stefon van Noordt, Jia Wu, Archana Venkataraman, Michael J Larson, Mikle South, Michael J Crowley
BACKGROUND: Impairment in prediction and appreciation for choice outcomes could contribute to several core symptoms of ASD. We examined electroencephalography (EEG) oscillations in 27 youth and young adults diagnosed with autism spectrum disorder (ASD) and 22 IQ-matched neurotypical controls while they performed a chance-based reward prediction task. METHOD: We re-analyzed our previously published ERP data (Larson et al., 2011) and examined theta band oscillations (4-8 Hz) at frontal midline sites, within a timing window that overlaps with the feedback-related negativity (FRN)...
May 2017: Research in Autism Spectrum Disorders
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