keyword
MENU ▼
Read by QxMD icon Read
search

limbic

keyword
https://www.readbyqxmd.com/read/28727713/local-brain-activity-differences-between-herpes-zoster-and-postherpetic-neuralgia-patients-a-resting-state-functional-mri-study
#1
Song Cao, Ying Li, Wenwen Deng, Bangyong Qin, Yi Zhang, Peng Xie, Jie Yuan, Buwei Yu, Tian Yu
BACKGROUND: Herpes zoster (HZ) can develop into postherpetic neuralgia (PHN), both of which are painful diseases. PHN patients suffer chronic pain and emotional disorders. Previous studies showed that the PHN brain displayed abnormal activity and structural change, but the difference in brain activity between HZ and PHN is still not known. OBJECTIVES: To identify regional brain activity changes in HZ and PHN brains with resting-state functional magnetic resonance imaging (rs-fMRI) technique, and to observe the differences between HZ and PHN patients...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28725202/emotional-picture-perception-repetition-effects-in-free-viewing-and-during-an-explicit-categorization-task
#2
Serena Mastria, Vera Ferrari, Maurizio Codispoti
Several studies have found that, despite a decrease in the overall amplitude of the late positive potential (LPP) with repeated presentation of the same picture, emotional stimuli continue to elicit a larger LPP than neutral ones. These findings seem to support the hypothesis that the affective modulation of the LPP reflects a mandatory process and does not rely on stimulus novelty. However, in these studies participants were asked to merely look at the pictures, without carrying out any additional task (free-viewing), making picture emotionality the most salient aspect of the stimulus, despite its repetition...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28723697/the-history-and-future-of-ablative-neurosurgery-for-major-depressive-disorder
#3
Matthew Volpini, Peter Giacobbe, G Rees Cosgrove, Anthony Levitt, Andres M Lozano, Nir Lipsman
BACKGROUND: There is an urgent need to develop safe and effective treatments for patients with treatment-resistant depression (TRD). Several neurosurgical procedures have been developed to treat the dysfunctional brain circuits implicated in major depression. OBJECTIVES: This review describes the most common ablative procedures used to treat major depressive disorder: anterior cingulotomy, subcaudate tractotomy, limbic leucotomy, and anterior capsulotomy. The efficacy and safety of each are discussed and compared with other current and emerging modalities, including deep brain stimulation (DBS) and MR-guided focused ultrasound (MRgFUS)...
July 20, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28723654/disrupted-small-world-brain-network-topology-in-pure-conduct-disorder
#4
Feng-Mei Lu, Jian-Song Zhou, Jiang Zhang, Xiao-Ping Wang, Zhen Yuan
OBJECTIVES: Conduct disorder (CD) is characterized by the violation of the rights of others or basic social rules and a repetitive, persistent pattern of antisocial and aggressive behaviors. A large number of functional and structural neuroimaging studies have identified widely abnormalities in specific brain regions in CD, but the alterations in the topological organization of functional networks among them remain largely unknown. METHODS: Resting-state functional magnetic resonance imaging was applied to investigate the intrinsic functional connectivity in 18 pure CD patients and eighteen typically developing healthy controls...
July 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28720552/autoimmune-limbic-encephalitis-associated-with-type-1-diabetes-mellitus
#5
Onur Akın, Aylin Kılınç Uğurlu, Emine Demet Akbaş, Esra Döğer, Yılmaz Akbaş, Aysun Bideci, Özge Yüce, Kıvılcım Gücüyener, Orhun Çamurdan, Neşe Karabacak, Peyami Cinaz
Glutamic acid decarboxylase (GAD) antibodies can participate in the pathogenesis of both type 1 diabetes mellitus (T1DM) and limbic encephalitis (LE). However, an association between T1DM and LE is very rare. We report a patient who was diagnosed with type 1 diabetes mellitus six months after encountering limbic encephalitis. A 16-year-old boy was admitted with behavioral changes, confusion, and headache. He was diagnosed with LE. Anti-GAD levels were high. He was treated with pulse methylprednisolone. During the steroid treatment, neurological symptoms improved but hyperglycemia occurred...
July 17, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28720416/emotional-fmr-auditory-paradigm-demonstrates-normalization-of-limbic-hyperactivity-after-cognitive-behavior-therapy-for-auditory-hallucinations
#6
Eduardo J Aguilar, Iluminada Corripio, Gracián García-Martí, Eva Grasa, Luis Martí-Bonmatí, Beatriz Gómez-Ansón, Julio Sanjuán, Fidel Núñez-Marín, Esther Lorente-Rovira, María J Escartí, Alison Brabban, Douglas Turkington
No abstract text is available yet for this article.
July 15, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28717094/limbic-encephalitis-associated-with-human-herpesvirus-7-hhv-7-in-an-immunocompetent-adult-the-first-reported-case-in-japan
#7
Yoko Aburakawa, Takayuki Katayama, Tsukasa Saito, Jun Sawada, Tatsuo Suzutani, Hitoshi Aizawa, Naoyuki Hasebe
A 35-year-old male who had not previously suffered any major illnesses was admitted to our hospital because of general fatigue, fever, headache, vomiting, consciousness disturbance, and seizures. A neurological examination showed that he was in a semi-comatose state and exhibited neck stiffness. Brain magnetic resonance imaging detected high-intensity areas in the bilateral hippocampi and periventricular white matter. A cerebrospinal fluid examination revealed mononuclear pleocytosis, an elevated protein level, and positivity for human herpesvirus-7 (HHV-7) DNA...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28716962/gamma-oscillations-in-the-rat-ventral-striatum-originate-in-the-piriform-cortex
#8
James E Carmichael, Jimmie M Gmaz, Matthijs A A van der Meer
Local field potentials (LFPs) recorded from the human and rodent ventral striatum (vStr) exhibit prominent, behaviorally relevant gamma-band oscillations. These oscillations are related to local spiking activity and transiently synchronize with anatomically related areas, suggesting a possible role in organizing vStr activity. However, the origin of vStr gamma is unknown. We recorded vStr gamma oscillations across a 1.4mm(2) grid spanned by 64 recording electrodes as male rats rested and foraged for rewards, revealing a highly consistent power gradient originating in the adjacent piriform cortex...
July 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28716399/prelimbic-%C3%AE-1-adrenoceptors-are-involved-in-the-regulation-of-depressive-like-behaviors-in-the-hemiparkinsonian-rats
#9
Zhong Heng Wu, Qiao Jun Zhang, Cheng Xue Du, Yue Xi, Wen Juan Li, Fang Yuan Guo, Shu Qi Yu, Ya Xin Yang, Jian Liu
At present, it is not clear whether α1-adrenoceptors in the prelimbic cortex (PrL) are involved in Parkinson's disease-related depression. Here we examined effects of PrL α1-adrenoceptors on depressive-like behaviors in rats with unilateral 6-hydroxydopamine lesions of the medial forebrain bundle. The lesion induced depressive-like responses as measured by the sucrose preference and forced swim tests compared to sham-operated rats. Intra-PrL injection of α1-adrenoceptor agonist phenylephrine induced or increased the expression of depressive-like behaviors in sham-operated and the lesioned rats...
July 14, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28715675/resting-state-brain-networks-in-patients-with-parkinson-s-disease-and-impulse-control-disorders
#10
Alessandro Tessitore, Gabriella Santangelo, Rosa De Micco, Alfonso Giordano, Simona Raimo, Marianna Amboni, Fabrizio Esposito, Paolo Barone, Gioacchino Tedeschi, Carmine Vitale
INTRODUCTION: To investigate intrinsic neural networks connectivity changes in Parkinson's disease (PD) patients with and without impulse control disorders (ICD). METHODS: Fifteen patients with PD with ICD (ICD+), 15 patients with PD without ICD (ICD-) and 24 age and sex-matched healthy controls (HC) were enrolled in the study. To identify patients with and without ICD and/or punding, we used the Minnesota Impulsive Disorders Interview (MIDI) and a clinical interview based on diagnostic criteria for each symptom...
June 24, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28714607/new-insights-into-how-serotonin-selective-reuptake-inhibitors-shape-the-developing-brain
#11
REVIEW
Jay A Gingrich, Heli Malm, Mark S Ansorge, Alan Brown, Andre Sourander, Deepika Suri, Cátia M Teixeira, Martha K Caffrey Cagliostro, Darshini Mahadevia, Myrna M Weissman
Development passes through sensitive periods, during which plasticity allows for genetic and environmental factors to exert indelible influence on the maturation of the organism. In the context of central nervous system (CNS) development, such sensitive periods shape the formation of neuro-circuits that mediate, regulate, and control behavior. This general mechanism allows for development to be guided by both the genetic blueprint, as well as the environmental context. While allowing for adaptation, such sensitive periods are also windows of vulnerability during which external and internal factors can confer risk to brain disorders by derailing adaptive developmental programs...
July 17, 2017: Birth defects research
https://www.readbyqxmd.com/read/28714085/neural-control-of-sweat-secretion-a-review
#12
REVIEW
Y Hu, C Converse, M C Lyons, W H Hsu
Humans have 4 million exocrine sweat glands, which can be classified into two types: eccrine and apocrine glands. Sweat secretion is a constitutive feature, which is directly involved in thermoregulation and metabolism. Sweat secretion is regulated by both the central nervous system(1) and autonomic nervous system.(2) In peripheral areas, the ANS, especially the sympathetic nervous system (SNS), mediates the transmission of neurotransmitters to sweat glands. Two principal chemical mediators, acetylcholine and noradrenaline (NA)/adrenaline (ADR), are released by the SNS, which stimulate sweat secretion...
July 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28709746/the-most-promising-advances-in-our-understanding-and-treatment-of-functional-psychogenic-movement-disorders
#13
Mark Hallett
The name functional rather than psychogenic is getting to be more widely used for terminology of this condition. It is better accepted by patients and keeps an open mind in searching for greater understanding of the pathophysiology. Advances in the pathophysiology show an overactive limbic system with connections to the motor system. Moreover, there is a disruption of the self-agency network, possibly due to a failure of feedforward signaling. There has recently been more success in treating patients. The strongest evidence is for intensive physical therapy coupled with at least some psychological support...
July 8, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28709732/medial-geniculate-neurons-show-diverse-effects-in-response-to-electrical-stimulation-of-prefrontal-cortex
#14
K M Barry, D Robertson, W H A M Mulders
Phantom perceptions have been proposed to arise due to dysfunctional sensory gating at the level of the thalamus. Recently, it has been suggested that tinnitus, a phantom perception of sound, may arise from altered cortico-limbic circuitry and its connection with the auditory thalamus, the medial geniculate nucleus (MGN). Indeed, some elements of this cortico-limbic circuitry, such as the prefrontal cortex (PFC), as well as elements of the auditory pathway, have been shown to be altered in humans with tinnitus...
July 8, 2017: Hearing Research
https://www.readbyqxmd.com/read/28709046/ankle-brachial-index-mri-markers-and-cognition-the-epidemiology-of-dementia-in-singapore-study
#15
Muhammad Amin Shaik, Narayanaswamy Venketasubramanian, Ching-Yu Cheng, Tien Yin Wong, Henri Vrooman, Mohammad Kamran Ikram, Saima Hilal, Christopher Chen
BACKGROUND AND AIMS: Previous studies showed an independent association of low ankle-brachial index (ABI) with cognitive impairment. However, the association between low ABI and cognition in the presence of both cerebrovascular disease (CeVD) and neurodegeneration is lacking. We aimed at investigating a) the association of low ABI with markers of CeVD and cortical thickness, and b) whether the association of low ABI with cognition is influenced by these markers. METHODS: Data was drawn from the Epidemiology of Dementia In Singapore (EDIS) study where all participants (n = 832) underwent neuropsychological tests and 3T brain magnetic resonance imaging (MRI) to assess CeVD markers as well as cortical thicknesses...
July 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28707157/parcellation-of-macaque-cortex-with-anatomical-connectivity-profiles
#16
Jiaojian Wang, Zhentao Zuo, Sangma Xie, Yifan Miao, Yuanye Ma, Xudong Zhao, Tianzi Jiang
The macaque model has been widely used to investigate the brain mechanisms of specific cognitive functions and psychiatric disorders. However, a detailed functional architecture map of the macaque cortex in vivo is still lacking. Here, we aimed to construct a new macaque cortex atlas based on its anatomical connectivity profiles using in vivo diffusion MRI. First, we defined the macaque cortical seed areas using the NeuroMaps atlas. Then, we applied the anatomical connectivity patterns-based parcellation approach to parcellate the macaque cortex into 80 subareas in each hemisphere, which were approximately symmetric between the two hemispheres...
July 13, 2017: Brain Topography
https://www.readbyqxmd.com/read/28706740/action-video-game-experience-related-to-altered-large-scale-white-matter-networks
#17
Diankun Gong, Weiyi Ma, Jinnan Gong, Hui He, Li Dong, Dan Zhang, Jianfu Li, Cheng Luo, Dezhong Yao
With action video games (AVGs) becoming increasingly popular worldwide, the cognitive benefits of AVG experience have attracted continuous research attention over the past two decades. Research has repeatedly shown that AVG experience can causally enhance cognitive ability and is related to neural plasticity in gray matter and functional networks in the brain. However, the relation between AVG experience and the plasticity of white matter (WM) network still remains unclear. WM network modulates the distribution of action potentials, coordinating the communication between brain regions and acting as the framework of neural networks...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28706210/regulation-of-aromatase-expression-in-the-anterior-amygdala-of-the-developing-mouse-brain-depends-on-er%C3%AE-and-sex-chromosome-complement
#18
Carla Daniela Cisternas, Lucas Ezequiel Cabrera Zapata, María Angeles Arevalo, Luis Miguel Garcia-Segura, María Julia Cambiasso
During development sex differences in aromatase expression in limbic regions of mouse brain depend on sex chromosome factors. Genes on the sex chromosomes may affect the hormonal regulation of aromatase expression and this study was undertaken to explore that possibility. Male E15 anterior amygdala neuronal cultures expressed higher levels of aromatase (mRNA and protein) than female cultures. Furthermore, treatment with oestradiol (E2) or dihydrotestosterone (DHT) increased Cyp19a1 expression and aromatase protein levels only in female neuronal cultures...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705440/inhibition-of-trkb-at-the-nucleus-accumbens-using-ana-12-regulates-basal-and-stress-induced-orexin-a-expression-within-the-mesolimbic-system-and-affects-anxiety-sociability-and-motivation
#19
Idu Azogu, Helene Plamondon
Repeated stress exposure can lead to the development of anxiety and mood disorders. An emerging biological substrate of depression and associated pathology is the nucleus accumbens (NAc), which through interactions with limbic, cognitive and motor circuits can regulate a variety of stress responses. Within these circuits, orexin neurons are involved in arousal and stress adaptability, effects proposed mediated via brain-derived neurotrophic factor signaling. This study tested the hypotheses that 1) repeated exposure to heterotypic stress alters social ability and preference and passive avoidant behaviors, 2) TrkB receptors at the NAc shell regulates stress-induced behavioral responses and orexin expression within the mesocorticolimbic system...
July 10, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28704562/cerebral-18f-fdg-pet-in-macrophagic-myofasciitis-an-individual-svm-based-approach
#20
Paul Blanc-Durand, Axel Van Der Gucht, Eric Guedj, Mukedaisi Abulizi, Mehdi Aoun-Sebaiti, Lionel Lerman, Antoine Verger, François-Jérôme Authier, Emmanuel Itti
INTRODUCTION: Macrophagic myofasciitis (MMF) is an emerging condition with highly specific myopathological alterations. A peculiar spatial pattern of a cerebral glucose hypometabolism involving occipito-temporal cortex and cerebellum have been reported in patients with MMF; however, the full pattern is not systematically present in routine interpretation of scans, and with varying degrees of severity depending on the cognitive profile of patients. Aim was to generate and evaluate a support vector machine (SVM) procedure to classify patients between healthy or MMF 18F-FDG brain profiles...
2017: PloS One
keyword
keyword
14459
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"