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preLekára.sk / Odborné časopisy / PLOS One / 2020 - 1

Functional interactions in patients with hemianopia: A graph theory-based connectivity study of resting fMRI signal

English version

Autoři: Caterina A. Pedersini aff001;  Joan Guàrdia-Olmos aff002;  Marc Montalà-Flaquer aff003;  Nicolò Cardobi aff001;  Javier Sanchez-Lopez aff001;  Giorgia Parisi aff001;  Silvia Savazzi aff001;  Carlo A. Marzi aff001
Působiště autorů: Physiology and Psychology Section, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy aff001;  Department of Social Psychology and Quantitative Psychology, School of Psychology, Institute of Neuroscience, Institute of Complex Systems, University of Barcelona, Barcelona, Spain aff002;  Department of Social Psychology and Quantitative Psychology, School of Psychology, Institute of Complex Systems, University of Barcelona, Barcelona, Spain aff003;  Perception and Awareness (PandA) Laboratory, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy aff004;  National Institute of Neuroscience, Verona, Italy aff005
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0226816

Souhrn

The assessment of task-independent functional connectivity (FC) after a lesion causing hemianopia remains an uncovered topic and represents a crucial point to better understand the neural basis of blindsight (i.e. unconscious visually triggered behavior) and visual awareness. In this light, we evaluated functional connectivity (FC) in 10 hemianopic patients and 10 healthy controls in a resting state paradigm. The main aim of this study is twofold: first of all we focused on the description and assessment of density and intensity of functional connectivity and network topology with and without a lesion affecting the visual pathway, and then we extracted and statistically compared network metrics, focusing on functional segregation, integration and specialization. Moreover, a study of 3-cycle triangles with prominent connectivity was conducted to analyze functional segregation calculated as the area of each triangle created connecting three neighboring nodes. To achieve these purposes we applied a graph theory-based approach, starting from Pearson correlation coefficients extracted from pairs of regions of interest. In these analyses we focused on the FC extracted by the whole brain as well as by four resting state networks: The Visual (VN), Salience (SN), Attention (AN) and Default Mode Network (DMN), to assess brain functional reorganization following the injury. The results showed a general decrease in density and intensity of functional connections, that leads to a less compact structure characterized by decrease in functional integration, segregation and in the number of interconnected hubs in both the Visual Network and the whole brain, despite an increase in long-range inter-modules connections (occipito-frontal connections). Indeed, the VN was the most affected network, characterized by a decrease in intra -⁠ and inter-network connections and by a less compact topology, with less interconnected nodes. Surprisingly, we observed a higher functional integration in the DMN and in the AN regardless of the lesion extent, that may indicate a functional reorganization of the brain following the injury, trying to compensate for the general reduced connectivity. Finally we observed an increase in functional specialization (lower between-network connectivity) and in inter-networks functional segregation, which is reflected in a less compact network topology, highly organized in functional clusters. These descriptive findings provide new insight on the spontaneous brain activity in hemianopic patients by showing an alteration in the intrinsic architecture of a large-scale brain system that goes beyond the impairment of a single RSN.

Klíčová slova:

Network analysis – Visual impairments – Neural networks – Vision – Brain damage – Lesions – Clustering coefficients – Occipital lobe

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Článek Antenatal depression and its association with adverse birth outcomes in low and middle-income countries: A systematic review and meta-analysis
Článek The role of refugee and migrant migration status on medication adherence: Mediation through illness perceptions
Článek Effects of CK2β subunit down-regulation on Akt signalling in HK-2 renal cells
Článek Novel broad-spectrum activity-based probes to profile malarial cysteine proteases
Článek Association between opioid analgesic therapy and initiation of buprenorphine management: An analysis of prescription drug monitoring program data
Článek Effect of a community-based approach of iron and folic acid supplementation on compliance by pregnant women in Kiambu County, Kenya: A quasi-experimental study
Článek An updated evaluation of serum sHER2, CA15.3, and CEA levels as biomarkers for the response of patients with metastatic breast cancer to trastuzumab-based therapies
Článek Genome-wide association study of metabolic syndrome in Korean populations
Článek Plasma kynurenines and prognosis in patients with heart failure
Článek Occurrence and distribution of anthropogenic persistent organic pollutants in coastal sediments and mud shrimps from the wetland of central Taiwan
Článek Gut microbiota composition alterations are associated with the onset of diabetes in kidney transplant recipients
Článek Metabolic analysis of amino acids and vitamin B6 pathways in lymphoma survivors with cancer related chronic fatigue
Článek Immunopathogenesis of canine chronic ulcerative stomatitis
Článek Generalizing findings from a randomized controlled trial to a real-world study of the iLookOut, an online education program to improve early childhood care and education providers’ knowledge and attitudes about reporting child maltreatment
Článek When and what to test for: A cost-effectiveness analysis of febrile illness test-and-treat strategies in the era of responsible antibiotic use
Článek Comparison of effects and safety in providing controlled hypotension during surgery between dexmedetomidine and magnesium sulphate: A meta-analysis of randomized controlled trials
Článek The gene encoding the ketogenic enzyme HMGCS2 displays a unique expression during gonad development in mice
Článek Association of endothelial nitric oxide synthase (NOS3) gene polymorphisms with primary open-angle glaucoma in a Saudi cohort
Článek Antitrust analysis with upward pricing pressure and cost efficiencies
Článek Natural selection contributes to food web stability
Článek Pyramiding QTLs controlling tolerance against drought, salinity, and submergence in rice through marker assisted breeding
Článek Diversity and plant growth-promoting functions of diazotrophic/N-scavenging bacteria isolated from the soils and rhizospheres of two species of Solanum
Článek Sofosbuvir-based regimen for genotype 2 HCV infected patients in Taiwan: A real world experience
Článek The virulence domain of Shigella IcsA contains a subregion with specific host cell adhesion function
Článek Quantitative analysis of adsorption and desorption of volatile organic compounds on reusable zeolite filters using gas chromatography
Článek Quo vadis Pantanal? Expected precipitation extremes and drought dynamics from changing sea surface temperature
Článek Cloud-computing and machine learning in support of country-level land cover and ecosystem extent mapping in Liberia and Gabon
Článek The Brief Measure of Emotional Preoperative Stress (B-MEPS) as a new predictive tool for postoperative pain: A prospective observational cohort study
Článek The impact of diabetes mellitus medication on the incidence of endogenous endophthalmitis
Článek Correction: Chl1 DNA helicase and Scc2 function in chromosome condensation through cohesin deposition
Článek Clinical and pathological features of thrombotic microangiopathy influencing long-term kidney transplant outcomes
Článek Occupational exposure to particulate matter from air pollution in the outdoor workplaces in Almaty during the cold season
Článek Key necroptotic proteins are required for Smac mimetic-mediated sensitization of cholangiocarcinoma cells to TNF-α and chemotherapeutic gemcitabine-induced necroptosis
Článek Concurrent lipidomics and proteomics on malignant plasma cells from multiple myeloma patients: Probing the lipid metabolome
Článek Retraction: SDR9C7 Promotes Lymph Node Metastases in Patients with Esophageal Squamous Cell Carcinoma
Článek Association between tuberculosis and depression on negative outcomes of tuberculosis treatment: A systematic review and meta-analysis
Článek Control of the microsporidian parasite Nosema ceranae in honey bees (Apis mellifera) using nutraceutical and immuno-stimulatory compounds
Článek Role of donor genotype in RT-QuIC seeding activity of chronic wasting disease prions using human and bank vole substrates
Článek Oral magnesium supplementation for leg cramps in pregnancy—An observational controlled trial
Článek Health care professionals’ knowledge of commonly used sedative, analgesic and neuromuscular drugs: A single center (Rambam Health Care Campus), prospective, observational survey
Článek Campylobacter portucalensis sp. nov., a new species of Campylobacter isolated from the preputial mucosa of bulls
Článek Transgenic interleukin 11 expression causes cross-tissue fibro-inflammation and an inflammatory bowel phenotype in mice
Článek Sleep quality and sex modify the relationships between trait energy and fatigue on state energy and fatigue
Článek The role of peer, parental, and school norms in predicting adolescents’ attitudes and behaviours of majority and different minority ethnic groups in Croatia
Článek Availability, prices and affordability of selected antibiotics and medicines against non-communicable diseases in western Cameroon and northeast DR Congo
Článek The effect of mutations derived from mouse-adapted H3N2 seasonal influenza A virus to pathogenicity and host adaptation
Článek Detection of posttraumatic pneumothorax using electrical impedance tomography—An observer-blinded study in pigs with blunt chest trauma
Článek Educators’ perceptions of organisational readiness for implementation of a pre-adolescent transdisciplinary school health intervention for inter-generational outcomes
Článek Beyond the heterodimer model for mineralocorticoid and glucocorticoid receptor interactions in nuclei and at DNA
Článek The effects of sport expertise and shot results on basketball players’ action anticipation
Článek Framework and algorithms for identifying honest blocks in blockchain
Článek Exploring the impact of terminology differences in blood and organ donor decision making
Článek Platelet indices significantly correlate with liver fibrosis in HCV-infected patients
Článek The nitrate content of fresh and cooked vegetables and their health-related risks
Článek Bioreactor for mobilization of mesenchymal stem/stromal cells into scaffolds under mechanical stimulation: Preliminary results
Článek Non-gradient and genotype-dependent patterns of RSV gene expression
Článek Multiplex real-time PCR for the detection of Clavibacter michiganensis subsp. michiganensis, Pseudomonas syringae pv. tomato and pathogenic Xanthomonas species on tomato plants
Článek The 24-hour urinary cortisol in post-traumatic stress disorder: A meta-analysis
Článek Drug-eluting versus bare-metal stents for first myocardial infarction in patients with atrial fibrillation: A nationwide population-based cohort study
Článek Health-related quality of life among patients with type 2 diabetes mellitus in Eastern Province, Saudi Arabia: A cross-sectional study
Článek “I like the way I am, but I feel like I could get a little bit bigger”: Perceptions of body image among adolescents and youth living with HIV in Durban, South Africa
Článek Nanoparticle-based ‘turn-on’ scattering and post-sample fluorescence for ultrasensitive detection of water pollution in wider window
Článek Insights into the strategy of micro-environmental adaptation: Transcriptomic analysis of two alvinocaridid shrimps at a hydrothermal vent
Článek Thirty-day readmission after medical-surgical hospitalization for people who experience imprisonment in Ontario, Canada: A retrospective cohort study
Článek Hyper-spectral response and estimation model of soil degradation in Kenli County, the Yellow River Delta
Článek The association of telomere length and telomerase activity with adverse outcomes in older patients with non-ST-elevation acute coronary syndrome
Článek Construction of a high-density genetic map and fine mapping of a candidate gene locus for a novel branched-spike mutant in barley
Článek Alterations of aqueous humor Aβ levels in Aβ-infused and transgenic mouse models of Alzheimer disease
Článek Natural hybridization between Phyllagathis and Sporoxeia species produces a hybrid without reproductive organs
Článek The impact of peer attachment on prosocial behavior, emotional difficulties and conduct problems in adolescence: The mediating role of empathy
Článek Diagnostic performance of serum interferon gamma, matrix metalloproteinases, and periostin measurements for pulmonary tuberculosis in Japanese patients with pneumonia
Článek Characterization of black patina from the Tiber River embankments using Next-Generation Sequencing
Článek Problem gambling, associations with comorbid health conditions, substance use, and behavioural addictions: Opportunities for pathways to treatment
Článek Nanosheet wrapping-assisted coverslip-free imaging for looking deeper into a tissue at high resolution
Článek Validity of cerebrovascular ICD-9-CM codes in healthcare administrative databases. The Umbria Data-Value Project
Článek Torque teno virus viral load is related to age, CMV infection and HLA type but not to Alzheimer's disease
Článek Associations of cigarette smoking and burden of thoracic aortic calcification in asymptomatic individuals: A dose-response relationship
Článek Transforming assessment of speech in children with cleft palate via online crowdsourcing
Článek Human-raptor conflict in rural settlements of Colombia
Článek Assessment of peritoneal microbial features and tumor marker levels as potential diagnostic tools for ovarian cancer
Článek Deficiency syndromes in top predators associated with large-scale changes in the Baltic Sea ecosystem
Článek Perceived relative social status and cognitive load influence acceptance of unfair offers in the Ultimatum Game
Článek Hepatitis B and C virus infection among HIV patients within the public and private healthcare systems in Chile: A cross-sectional serosurvey
Článek Retraction: Oncogenic Fibulin-5 Promotes Nasopharyngeal Carcinoma Cell Metastasis through the FLJ10540/AKT Pathway and Correlates with Poor Prognosis
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PLOS One

2020 Číslo 1
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Autori: doc. MUDr. David Zemánek, Ph.D., MUDr. Anna Chaloupka, Ph.D.
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