keyword
MENU ▼
Read by QxMD icon Read
search

Ventromedial prefrontal cortex

keyword
https://www.readbyqxmd.com/read/29141188/autistic-traits-modulate-the-activity-of-the-ventromedial-prefrontal-cortex-in-response-to-female-faces
#1
Yui Murakami, Shinya Sakai, Kenta Takeda, Daisuke Sawamura, Kazuki Yoshida, Takamichi Hirose, Chisa Ikeda, Hiroki Mani, Toru Yamamoto, Ayahito Ito
Previous findings have revealed abnormal visual attention or processing of faces among individuals with autism spectrum condition (ASC). However, little attention has been paid to the relationship between autistic traits and neural mechanisms associated with representing facial values. Using fMRI, we investigated the patterns of brain activity in the vmPFC and VS in response to faces of elderly males, elderly females, young males, and young females. During fMRI, subjects with a relatively high autism quotient (high group) and those with a relatively low autism quotient (low group) were presented with a face and asked to rate its pleasantness...
November 12, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/29134457/thinking-about-others-and-the-future-neural-correlates-of-perspective-taking-relate-to-preferences-for-delayed-rewards
#2
Garret O'Connell, Chun-Ting Hsu, Anastasia Christakou, Bhismadev Chakrabarti
We infer the thoughts and feelings of others by taking their perspectives. Similar processes could be used to understand how we will be affected by future events, by allowing us to take the perspective of our future self. In this paper, we test this idea using a previously presented framework for guiding predictions. The framework proposes that a shared neural mechanism is involved in controlling egocentric bias, both while shifting our perspective away from self and towards others, and while shifting our perspective from immediate to future perspectives...
November 13, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/29125397/oxytocin-receptor-genotype-and-low-economic-privilege-reverses-ventral-striatum-social-anxiety-association
#3
Marlen Z Gonzalez, Meghan H Puglia, James P Morris, Jessica J Connelly
Oxytocin receptor gene (OXTR) polymorphisms, lower ventral striatum (VS) response to social stimuli, and lower economic privilege have been independently associated with depression and anxiety. However, the interactions between these risk factors are unknown. One hundred and fifty-seven healthy adult participants genotyped for OXTR rs237915 completed a common emotion-matching task during functional magnetic resonance imaging. Past economic privilege and depression and anxiety symptoms were concurrently assessed through validated self-report measures...
November 10, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/29122592/new-perspectives-on-the-brain-lesion-approach-implications-for-theoretical-models-of-human-memory
#4
Muireann Irish, Marlieke T R van Kesteren
Human lesion studies represent the cornerstone of modern day neuropsychology and provide an important adjunct to functional neuroimaging methods. The study of human lesion groups with damage to distinct regions of the brain permits the identification of underlying mechanisms and structures not only associated with, but essential for, complex cognitive processes. Here, we consider a recent review by McCormick et al. in which the power of the lesion model approach is elegantly presented with respect to a host of sophisticated cognitive endeavors, including autobiographical memory, future thinking, spatial navigation, and decision-making...
November 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/29116660/increased-hippocampus-to-ventromedial-prefrontal-connectivity-during-the-construction-of-episodic-future-events
#5
Karen L Campbell, Kevin P Madore, Roland G Benoit, Preston P Thakral, Daniel L Schacter
Both the hippocampus and ventromedial prefrontal cortex (vmPFC) appear to be critical for episodic future simulation. Damage to either structure affects one's ability to remember the past and imagine the future, and both structures are commonly activated as part of a wider core network during future simulation. However, the precise role played by each of these structures and, indeed, the direction of information flow between them during episodic simulation, is still not well understood. In this study, we scanned participants using functional magnetic resonance imaging while they imagined future events in response to object cues...
November 8, 2017: Hippocampus
https://www.readbyqxmd.com/read/29109237/sleep-deprivation-promotes-habitual-control-over-goal-directed-control-behavioral-and-neuroimaging-evidence
#6
Jie Chen, Jie Liang, Xiao Lin, Yang Zhang, Yan Zhang, Lin Lu, Jie Shi
Sleep is one of the most fundamental processes of life, playing an important role in the regulation of brain function. The long-term lack of sleep can cause memory impairments, declines in learning ability, and executive dysfunction. In the present study, we evaluated the effects of sleep deprivation on instrumental learning behavior, particularly goal-directed and habitual actions in humans, and investigated the underlying neural mechanisms. Healthy college students of either gender were enrolled and randomly divided into sleep deprivation group and sleep control group...
November 6, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29108366/neural-correlates-of-childhood-trauma-with-executive-function-in-young-healthy-adults
#7
Shaojia Lu, Fen Pan, Weijia Gao, Zhaoguo Wei, Dandan Wang, Shaohua Hu, Manli Huang, Yi Xu, Lingjiang Li
The aim of this study was to investigate the relationship among childhood trauma, executive impairments, and altered resting-state brain function in young healthy adults. Twenty four subjects with childhood trauma and 24 age- and gender-matched subjects without childhood trauma were recruited. Executive function was assessed by a series of validated test procedures. Localized brain activity was evaluated by fractional amplitude of low frequency fluctuation (fALFF) method and compared between two groups. Areas with altered fALFF were further selected as seeds in subsequent functional connectivity analysis...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29108016/behavioral-and-pathophysiological-outcomes-associated-with-caffeine-consumption-and-repetitive-mild-traumatic-brain-injury-rmtbi-in-adolescent-rats
#8
Glenn R Yamakawa, Connor Lengkeek, Sabrina Salberg, Simon C Spanswick, Richelle Mychasiuk
Given that caffeine consumption is exponentially rising in adolescents and they are at increased risk for repetitive mild traumatic brain injury (RmTBI), we sought to examine the pathophysiological outcomes associated with early life caffeine consumption and RmTBI. Adolescent male and female Sprague Dawley rats received either caffeine in the drinking water or normal water and were then randomly assigned to 3 mild injuries using our lateral impact device or 3 sham procedures. Following injury induction, behavioral outcomes were measured with a test battery designed to examine symptoms consistent with clinical manifestation of PCS (balance and motor coordination, anxiety, short-term working memory, and depressive-like behaviours)...
2017: PloS One
https://www.readbyqxmd.com/read/29096718/stress-amplifies-sex-differences-in-primate-prefrontal-profiles-of-gene-expression
#9
Alex G Lee, Megan Hagenauer, Devin Absher, Kathleen E Morrison, Tracy L Bale, Richard M Myers, Stanley J Watson, Huda Akil, Alan F Schatzberg, David M Lyons
BACKGROUND: Stress is a recognized risk factor for mood and anxiety disorders that occur more often in women than men. Prefrontal brain regions mediate stress coping, cognitive control, and emotion. Here, we investigate sex differences and stress effects on prefrontal cortical profiles of gene expression in squirrel monkey adults. METHODS: Dorsolateral, ventrolateral, and ventromedial prefrontal cortical regions from 18 females and 12 males were collected after stress or no-stress treatment conditions...
November 2, 2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/29074339/effect-of-deep-brain-stimulation-of-the-ventromedial-prefrontal-cortex-on-the-noradrenergic-system-in-rats
#10
Sonia Torres-Sanchez, Laura Perez-Caballero, Juan A Mico, Pau Celada, Esther Berrocoso
BACKGROUND: Deep Brain Stimulation (DBS) of the subgenual cingulate cortex (SCC) is a promising therapeutic alternative to treat resistant major depressive disorder. In preclinical studies, DBS of the ventromedial prefrontal cortex (vmPFC, the rodent SCC correlate) provokes an antidepressant-like effect, along with changes in noradrenaline levels at the site of stimulation. Hence, DBS appears to activate the noradrenergic-locus coeruleus (LC) system. OBJECTIVE/HYPOTHESIS: The aim of this study was to evaluate the effect of vmPFC DBS on the electrical activity of noradrenergic LC neurons, cortical oscillations and coherence between both brain areas in male rats...
October 13, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29073749/neurodevelopmental-changes-in-social-reinforcement-processing-a-functional-magnetic-resonance-imaging-study
#11
Soonjo Hwang, Harma Meffert, Michelle R VanTieghem, Stuart F White, Stephen Sinclair, Susan Y Bookheimer, James Blair
Objective: In the current study we investigated neurodevelopmental changes in response to social and non-social reinforcement. Methods: Fifty-three healthy participants including 16 early adolescents (age, 10-15 years), 16 late adolescents (age, 15-18 years), and 21 young adults (age, 21-25 years) completed a social/non-social reward learning task while undergoing functional magnetic resonance imaging. Participants responded to fractal image stimuli and received social or non-social reward/non-rewards according to their accuracy...
November 30, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29073459/physical-aggressiveness-and-gray-matter-deficits-in-ventromedial-prefrontal-cortex
#12
David S Chester, Donald R Lynam, Richard Milich, C Nathan DeWall
What causes individuals to hurt others? Since the famous case of Phineas Gage, lesions of the ventromedial prefrontal cortex (VMPFC) have been reliably linked to physically aggressive behavior. However, it is unclear whether naturally-occurring deficits in VMPFC, among normal individuals, might have widespread consequences for aggression. Using voxel based morphometry, we regressed gray matter density from the brains of 138 normal female and male adults onto their dispositional levels of physical aggression, verbal aggression, and sex, simultaneously...
October 7, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29066518/apathy-a-neurocircuitry-model-based-on-frontotemporal-dementia
#13
REVIEW
Simon Ducharme, Bruce H Price, Bradford C Dickerson
Apathy is a symptom shared among many neurological and psychiatric disorders. However, the underlying neurocircuitry remains incompletely understood. Apathy is one of the core features of behavioural variant frontotemporal dementia (bvFTD), a neurodegenerative disease presenting with heterogeneous combinations of socioaffective symptoms and executive dysfunction. We reviewed all neuroimaging studies of apathy in frontotemporal dementia (FTD) attempting to refine a neurocircuitry model and inform clinical definitions...
October 24, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29064617/social-comparison-in-the-brain-a-coordinate-based-meta-analysis-of-functional-brain-imaging-studies-on-the-downward-and-upward-comparisons
#14
Yi Luo, Simon B Eickhoff, Sébastien Hétu, Chunliang Feng
Social comparison is ubiquitous across human societies with dramatic influence on people's well-being and decision making. Downward comparison (comparing to worse-off others) and upward comparison (comparing to better-off others) constitute two types of social comparisons that produce different neuropsychological consequences. Based on studies exploring neural signatures associated with downward and upward comparisons, the current study utilized a coordinate-based meta-analysis to provide a refinement of understanding about the underlying neural architecture of social comparison...
October 24, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29064475/brain-substrates-of-unhealthy-versus-healthy-food-choices-influence-of-homeostatic-status-and-body-mass-index
#15
I H Harding, Z B Andrews, F Mata, S Orlandea, I Martínez-Zalacaín, C Soriano-Mas, E Stice, A Verdejo-Garcia
BACKGROUND/OBJECTIVES: Unhealthy dietary choices are a major contributor to harmful weight gain and obesity. This study interrogated the brain substrates of unhealthy versus healthy food choices in vivo, and evaluated the influence of hunger state and body mass index (BMI) on brain activation and connectivity. SUBJECTS/METHODS: Thirty adults (BMI: 18-38 kg m(-2)) performed a food-choice task involving preference-based selection between beverage pairs consisting of high-calorie (unhealthy) or low-calorie (healthy) options, concurrent with functional magnetic resonance imaging (fMRI)...
September 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29061508/endogenous-glutamate-within-the-prelimbic-and-infralimbic-cortices-regulates-the-incubation-of-cocaine-seeking-in-rats
#16
Christina B Shin, Taylor J Templeton, Alvin S Chiu, Jennifer Kim, Ellen S Gable, Philip A Vieira, Tod E Kippin, Karen K Szumlinski
The incubation of cue-reinforced cocaine-seeking coincides with increased extracellular glutamate within the ventromedial prefrontal cortex (vmPFC). The vmPFC is comprised of two subregions that oppositely regulate drug-seeking, with infralimbic (IL) activity inhibiting, and prelimibic (PL) activity facilitating, drug-seeking. Thus, we hypothesized that increasing and decreasing endogenous glutamate within the IL would attenuate and potentiate, respectively, cue-reinforced drug-seeking behavior, with the converse effects observed upon manipulations of endogenous glutamate within the PL...
October 20, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29061228/neural-and-computational-processes-underlying-dynamic-changes-in-self-esteem
#17
Geert-Jan Will, Robb B Rutledge, Michael Moutoussis, Raymond J Dolan
Self-esteem is shaped by the appraisals we receive from others. Here, we characterize neural and computational mechanisms underlying this form of social influence. We introduce a computational model that captures fluctuations in self-esteem engendered by prediction errors that quantify the difference between expected and received social feedback. Using functional MRI, we show these social prediction errors correlate with activity in ventral striatum/subgenual anterior cingulate cortex, while updates in self-esteem resulting from these errors co-varied with activity in ventromedial prefrontal cortex (vmPFC)...
October 24, 2017: ELife
https://www.readbyqxmd.com/read/29054735/associations-between-neural-reward-processing-and-binge-eating-among-adolescent-girls
#18
Lindsay P Bodell, Jennifer E Wildes, Andrea B Goldschmidt, Rachel Lepage, Kate E Keenan, Amanda E Guyer, Alison E Hipwell, Stephanie D Stepp, Erika E Forbes
PURPOSE: Neuroimaging studies suggest that altered brain responses to food-related cues in reward-sensitive regions characterize individuals who experience binge-eating episodes. However, the absence of longitudinal data limits the understanding of whether reward-system alterations increase vulnerability to binge eating, as theorized in models of the development of this behavior. METHODS: Adolescent girls (N = 122) completed a functional magnetic resonance imaging monetary reward task at age 16 years as part of an ongoing longitudinal study...
October 17, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/29053851/escitalopram-ameliorates-hypercortisolemia-and-insulin-resistance-in-low-birth-weight-men-with-limbic-brain-alterations
#19
Christian Selmer Buhl, Hans Stødkilde-Jørgensen, Poul Videbech, Allan Vaag, Niels Møller, Sten Lund, Esben Selmer Buhl
CONTEXT: Low birth weight (LBW, <2500 g) is linked to development of insulin resistance and limbic-hypothalamic-pituitary-adrenal (LHPA)-axis hyperactivity. OBJECTIVE: First aim was to study insulin action, LHPA-axis function and limbic brain structures in young, healthy LBW-men vs. normal birth weight controls (NBW) (Part 1). Second aim was to investigate the effects of Escitalopram vs. placebo treatment in LBW with regards to LHPA-axis and insulin sensitivity (Part 2)...
October 18, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29051739/impaired-feedback-processing-for-symbolic-reward-in-individuals-with-internet-game-overuse
#20
Jinhee Kim, Hackjin Kim, Eunjoo Kang
Reward processing, which plays a critical role in adaptive behavior, is impaired in addiction disorders, which are accompanied by functional abnormalities in brain reward circuits. Internet gaming disorder, like substance addiction, is thought to be associated with impaired reward processing, but little is known about how it affects learning, especially when feedback is conveyed by less-salient motivational events. Here, using both monetary (±500 KRW) and symbolic (Chinese characters "right" or "wrong") rewards and penalties, we investigated whether behavioral performance and feedback-related neural responses are altered in Internet game overuse (IGO) group...
2017: Frontiers in Psychiatry
keyword
keyword
55258
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"