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Mismatch Negativity

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https://www.readbyqxmd.com/read/29164571/assessment-of-mismatch-negativity-and-p300-response-in-patients-with-disorders-of-consciousness
#1
X-Y Wang, H-Y Wu, H-T Lu, T-T Huang, H Zhang, T Zhang
OBJECTIVE: To evaluate changes in mismatch negativity (MMN) and P300 response in vegetative state (VS) and minimally conscious state (MCS) patients before and after treatment, and their value for prediction of prognosis. PATIENTS AND METHODS: Event-related potentials (ERPs), performed on 11 patients classified as VS (n = 6) or MCS (n = 5), and five healthy participants (i.e., control group). We performed a six months telephone follow-up to monitor changes in consciousness recovery...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29163101/eeg-frequency-changes-prior-to-making-errors-in-an-easy-stroop-task
#2
Rachel Atchley, Daniel Klee, Barry Oken
Background: Mind-wandering is a form of off-task attention that has been associated with negative affect and rumination. The goal of this study was to assess potential electroencephalographic markers of task-unrelated thought, or mind-wandering state, as related to error rates during a specialized cognitive task. We used EEG to record frontal frequency band activity while participants completed a Stroop task that was modified to induce boredom, task-unrelated thought, and therefore mind-wandering. Methods: A convenience sample of 27 older adults (50-80 years) completed a computerized Stroop matching task...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29162610/angiography-versus-hemodynamics-to-predict-the-natural-history-of-coronary-stenoses-a-fame-2-substudy
#3
Giovanni Ciccarelli, Emanuele Barbato, Gabor G Toth, Brigitta Gahl, Panagiotis Xaplanteris, Stephane Fournier, Anastasios Milkas, Jozef Bartunek, Marc Vanderheyden, Nico Pijls, Pim Tonino, William F Fearon, Peter Jüni, Bernard De Bruyne
Background -Among patients with documented stable coronary artery disease (CAD) and in whom no revascularization was performed, we compared the respective values of angiographic diameter stenosis (DS) and of fractional flow reserve (FFR) in predicting natural history. Methods -The present analysis included the 607 patients from the Fractional flow reserve versus angiography in multivessel evaluation 2 (FAME 2) trial in whom no revascularization was performed. FFR varied from 0.20 to 1.00 (average 0.74 ± 0...
November 21, 2017: Circulation
https://www.readbyqxmd.com/read/29162182/child-temperament-and-teacher-relationship-interactively-predict-cortisol-expression-the-prism-of-classroom-climate
#4
Danielle S Roubinov, Melissa J Hagan, W Thomas Boyce, Marilyn J Essex, Nicole R Bush
Entry into kindergarten is a developmental milestone that children may differentially experience as stressful, with implications for variability in neurobiological functioning. Guided by the goodness-of-fit framework, this study tested the hypothesis that kindergarten children's (N = 338) daily cortisol would be affected by the "match" or "mismatch" between children's temperament and qualities of the classroom relational context. The robustness of these associations was also explored among a separate sample of children in third grade (N = 165)...
December 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29152888/the-sensitivity-of-breeding-songbirds-to-changes-in-seasonal-timing-is-linked-to-population-change-but-cannot-be-directly-attributed-to-the-effects-of-trophic-asynchrony-on-productivity
#5
Samantha E Franks, James W Pearce-Higgins, Sian Atkinson, James R Bell, Marc S Botham, Tom M Brereton, Richard Harrington, David I Leech
A consequence of climate change has been an advance in the timing of seasonal events. Differences in the rate of advance between trophic levels may result in predators becoming mismatched with prey availability, reducing fitness and potentially driving population declines. Such "trophic asynchrony" is hypothesized to have contributed to recent population declines of long-distance migratory birds in particular. Using spatially extensive survey data from 1983 to 2010 to estimate variation in spring phenology from 280 plant and insect species and the egg-laying phenology of 21 British songbird species, we explored the effects of trophic asynchrony on avian population trends and potential underlying demographic mechanisms...
November 20, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29152205/genetic-structure-and-demographic-history-of-lymantria-dispar-linnaeus-1758-lepidoptera-erebidae-in-its-area-of-origin-and-adjacent-areas
#6
Tae Hwa Kang, Sang Hoon Han, Heung Sik Lee
We analyzed the population genetic structure and demographic history of 20 Lymantria dispar populations from Far East Asia using microsatellite loci and mitochondrial genes. In the microsatellite analysis, the genetic distances based on pairwise FST values ranged from 0.0087 to 0.1171. A NeighborNet network based on pairwise FST genetic distances showed that the 20 regional populations were divided into five groups. Bayesian clustering analysis (K = 3) demonstrated the same groupings. The populations in the Korean Peninsula and adjacent regions, in particular, showed a mixed genetic pattern...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29151101/psychoacoustics-and-neurophysiological-alterations-after-30-36-hours-of-sleep-deprivation
#7
Adrián Poblano, Sergio Díaz-Leines, Olga Gama-Moreno, Blanca Flores-Avalos
BACKGROUND AND AIM: Sleep deprivation (SD) may result in perceptual and cognitive alterations in healthy subjects. Our objective was to compare whether psychoacoustics and neurophysiological variables in healthy subjects were altered after SD of 30-36 h. METHOD: We examined 22 subjects by means of several psychoacoustics tests, P300 and mismatch negativity (MMN) recordings, and brainstem auditory evoked potentials (BAEP) before and after 30-36 h of SD. RESULTS: In the psychoacoustics tests, we found that after SD, difficulties were experienced by the left ear in the discrimination of words in noise and by the right ear in music discrimination...
November 18, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/29139557/using-somatosensory-mismatch-responses-as-a-window-into-somatotopic-processing-of-tactile-stimulation
#8
Guannan Shen, Nathan J Smyk, Andrew N Meltzoff, Peter J Marshall
Brain responses to tactile stimulation have often been studied through the examination of ERPs elicited to touch on the body surface. Here, we examined two factors potentially modulating the amplitude of the somatosensory mismatch negativity (sMMN) and P300 responses elicited by touch to pairs of body parts: (a) the distance between the representation of these body parts in somatosensory cortex, and (b) the physical distances between the stimulated points on the body surface. The sMMN and the P300 response were elicited by tactile stimulation in two oddball protocols...
November 15, 2017: Psychophysiology
https://www.readbyqxmd.com/read/29137563/stem-anteversion-mismatch-to-the-anatomical-anteversion-causes-loss-of-periprosthetic-bone-density-after-tha
#9
Shinya Hayashi, Shingo Hashimoto, Tomoyuki Matsumoto, Koji Takayama, Kotaro Nishida, Kazunari Ishida, Ryosuke Kuroda
The short tapered-wedge stem is popular worldwide because it potentially preserves more bone stock during total hip arthroplasty (THA). However, stem version mismatch may affect physiological stress distribution. In this study, we analyzed the correlations between periprosthetic bone mineral density (BMD) changes and anteversion mismatch in patients who underwent THA using a short tapered-wedge stem. The study included 44 patients (44 joints) who underwent THA with a Tri-Lock stem. At baseline and at 6 and 24 months postoperatively, the BMDs in the seven Gruen zones were evaluated using dual-energy X-ray absorptiometry...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29133142/dedifferentiated-endometrial-carcinomas-with-neuroendocrine-features-a-clinicopathologic-immunohistochemical-and-molecular-genetic-study
#10
Iñigo Espinosa, Antonio De Leo, Emanuela D'Angelo, Juan M Rosa-Rosa, Marina Corominas, Alan Gonzalez, José Palacios, Jaime Prat
Undifferentiated endometrial carcinoma is an aggressive type of uterine cancer which is occasionally associated with a low-grade endometrioid carcinoma component. This combination is referred to as "dedifferentiated endometrioid endometrial carcinoma." Neuroendocrine expression may occur in undifferentiated endometrial carcinoma but its significance in dedifferentiated endometrial carcinomas is unknown. To gain insight into the pathogenesis of these tumors we have analyzed the immunophenotype (ARID1A, MLH1, PMS2, MSH2, MSH6, p53, b-catenin, SMARCB1, synaptophysin, chromogranin A, and CD56) and mutational status (PTEN, KRAS, PIK3CA, TP53 and POLE) of 4 dedifferentiated endometrial carcinomas with strong and diffuse neuroendocrine expression...
November 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/29132815/impaired-mismatch-negativity-to-frequency-deviants-in-individuals-at-ultra-high-risk-for-psychosis-and-preliminary-evidence-for-further-impairment-with-transition-to-psychosis
#11
Suzie Lavoie, Bradley N Jack, Oren Griffiths, Ayaka Ando, Paul Amminger, Anthony Couroupis, Aidan Jago, Connie Markulev, Patrick D McGorry, Barnaby Nelson, Andrea Polari, Hok Pan Yuen, Thomas J Whitford
BACKGROUND: There is evidence to suggest that people with established psychotic disorders show impairments in the mismatch negativity induced by a frequency-deviant sound (fMMN), and that these impairments worsen with the deterioration of psychotic symptoms. This study aimed to test whether individuals at ultra-high risk (UHR) for psychosis show pre-morbid impairments in fMMN, and if so, whether fMMN continues to deteriorate with transition to psychosis. METHOD: fMMN was recorded in a cohort of UHR individuals (n=42) and compared to healthy controls (n=29)...
November 10, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29132813/mismatch-negativity-a-simple-and-useful-biomarker-of-n-methyl-d-aspartate-receptor-nmdar-type-glutamate-dysfunction-in-schizophrenia
#12
Michael Avissar, Daniel Javitt
No abstract text is available yet for this article.
November 10, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29129398/genomic-markers-in-prostate-cancer-decision-making
#13
REVIEW
Vito Cucchiara, Matthew R Cooperberg, Marc Dall'Era, Daniel W Lin, Francesco Montorsi, Jack A Schalken, Christopher P Evans
CONTEXT: Although the widespread use of prostate-specific antigen (PSA) has led to an early detection of prostate cancer (PCa) and a reduction of metastatic disease at diagnosis, PSA remains one of the most controversial biomarkers due to its limited specificity. As part of emerging efforts to improve both detection and management decision making, a number of new genomic tools have recently been developed. OBJECTIVE: This review summarizes the ability of genomic biomarkers to recognize men at high risk of developing PCa, discriminate clinically insignificant and aggressive tumors, and facilitate the selection of therapies in patients with advanced disease...
November 9, 2017: European Urology
https://www.readbyqxmd.com/read/29129289/craving-for-the-future-the-brain-as-a-nutritional-prediction-system
#14
REVIEW
Samuel J Walker, Dennis Goldschmidt, Carlos Ribeiro
In the last decades, predictive coding has emerged as an important framework for understanding how the brain processes information. It states that the brain is constantly inferring and predicting sensory data from statistical regularities in its environment. While this framework has been largely applied to sensory processing and motor control, we argue here that it could also serve as framework for a better understanding of how animals regulate nutrient homeostasis. Mechanisms that underlie nutrient homeostasis are commonly described in terms of negative feedback control, which compares current states with a reference point, called setpoint, and counteracts any mismatches...
October 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29128519/genetic-structure-of-two-erythrocyte-binding-antigens-of-plasmodium-falciparum-reveals-a-contrasting-pattern-of-selection
#15
Pramita Chowdhury, Srikanta Sen, Sumana Datta Kanjilal, Sanghamitra Sengupta
Erythrocyte binding antigens 175 (EBA-175) and 140 (EBA-140) play key roles in erythrocyte invasion by binding to glycophorin A (GPA) and C (GPC) respectively in human malaria. Since antigenic variation in malaria endemic region is a major barrier to development of effective vaccine, we explore the nature and pattern of sequence diversity of these two vaccine candidates in Kolkata, India. Population genetic parameters based on parasite sequences representing region II of Pfeba-175 and Pfeba-140 genes were estimated using DnaSP V...
November 8, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29128380/low-influenza-vaccine-effectiveness-and-the-effect-of-previous-vaccination-in-preventing-admission-with-a-h1n1-pdm09-or-b-victoria-lineage-in-patients-60-years-old-or-older-during-the-2015-2016-influenza-season
#16
Joan Puig-Barberà, Beatriz Guglieri-López, Miguel Tortajada-Girbés, F Xavier López-Labrador, Mario Carballido-Fernández, Joan Mollar-Maseres, Germán Schwarz-Chavarri, Víctor Baselga-Moreno, Ainara Mira-Iglesias, Javier Díez-Domingo
BACKGROUND: The 2015/2016 influenza season was characterized in Europe by the circulation of A(H1N1)pdm09 clade 6B.1 and B/Victoria-lineage influenza viruses. The components of the vaccines used in the current and past two seasons in the Valencia region were similar but not well matched to the 2015/2016 dominant influenza-circulating strains. We estimate influenza vaccine effectiveness (IVE) and interference of previous vaccination in preventing admission with A(H1N1)pdm09 or B/Victoria-lineage in this particular season...
November 8, 2017: Vaccine
https://www.readbyqxmd.com/read/29127513/pentosidine-concentration-is-associated-with-degenerative-lumbar-scoliosis-in-older-women-preliminary-results
#17
Yawara Eguchi, Toru Toyoguchi, Kazuhide Inage, Kazuki Fujimoto, Sumihisa Orita, Kazuyo Yamauchi, Miyako Suzuki, Hirohito Kanamoto, Koki Abe, Masaki Norimoto, Tomotaka Umimura, Masao Koda, Takeo Furuya, Yasuchika Aoki, Kazuhisa Takahashi, Seiji Ohtori
PURPOSE: Advanced glycation end products (AGEs) have been implicated in the pathogenesis of sarcopenia. The objective of the study was to investigate the prevalence of sarcopenia in degenerative lumbar scoliosis (DLS), and the relationship between biochemical markers including major AGEs, pentosidine, and DLS in older women. METHODS: Our study participants were 20 elderly women with idiopathic DLS (mean age 76.4 years, range 56-88). Nineteen age- and sex-matched volunteers (mean age 74...
November 10, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29127383/tunable-mid-ir-focusing-in-inas-based-semiconductor-hyperbolic-metamaterial
#18
Mai Desouky, Ahmed M Mahmoud, Mohamed A Swillam
Noble Metals such as Gold and Silver demonstrated for mid IR metamaterials have suffered many obstacles such as: high losses and lack of tunability. The application of doped semiconductors has allowed overcoming the tunability restriction, besides, possessing lower losses as compared to metals. In addition, doped semiconductors have small magnitude of negative real permittivity which is required to realize mid IR Hyperbolic Metamaterials (HMMs). We theoretically demonstrate super focusing based on an all Semiconductor planar HMM using InAs heterostructure...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29125681/2015-16-i-move-i-move-multicentre-case-control-study-in-europe-moderate-vaccine-effectiveness-estimates-against-influenza-a-h1n1-pdm09-and-low-estimates-against-lineage-mismatched-influenza-b-among-children
#19
Esther Kissling, Marta Valenciano, Francisco Pozo, Ana-Maria Vilcu, Annicka Reuss, Caterina Rizzo, Amparo Larrauri, Judit Krisztina Horváth, Mia Brytting, Lisa Domegan, Monika Korczyńska, Adam Meijer, Ausenda Machado, Alina Ivanciuc, Vesna Višekruna Vučina, Sylvie van der Werf, Brunhilde Schweiger, Antonino Bella, Alin Gherasim, Annamária Ferenczi, Katherina Zakikhany, Joan O Donnell, Iwona Paradowska-Stankiewicz, Frederika Dijkstra, Raquel Guiomar, Mihaela Lazar, Sanja Kurečić Filipović, Kari Johansen, Alain Moren
BACKGROUND: During the 2015/16 influenza season in Europe, the co-circulating influenza viruses were A(H1N1)pdm09 and B/Victoria, which was antigenically distinct from the B/Yamagata component in the trivalent influenza vaccine. METHODS: We used the test negative design in a multicentre case-control study in twelve European countries to measure 2015/16 influenza vaccine effectiveness (VE) against medically-attended influenza-like illness (ILI) laboratory-confirmed as influenza...
November 10, 2017: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29121982/application-of-ultrasound-imaging-biomarkers-histoscanning%C3%A2-improves-staging-reliability-of-prostate-biopsies
#20
M F Hamann, D Meyer, S Knüpfer, J Fuchs, K P Jünemann, C M Naumann
OBJECTIVE: Imaging biomarkers like HistoScanning™ augment the informative value of ultrasound. Analogue image-guidance might improve the diagnostic accuracy of prostate biopsies and reduce misclassifications in preoperative staging and grading. RESULTS: Comparison of 77 image-guided versus 88 systematic prostate biopsies revealed that incorrect staging and Gleason misclassification occurs less frequently in image-guided than in systematic prostate biopsies. Systematic prostate biopsies (4-36 cores, median 12 cores) tended to detect predominantly unilateral tumors (39% sensitivity, 90...
November 9, 2017: BMC Research Notes
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