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Event related potentials

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https://www.readbyqxmd.com/read/28110475/pattern-recognition-of-spectral-entropy-features-for-detection-of-alcoholic-and-control-visual-erp-s-in-multichannel-eegs
#1
T K Padma Shri, N Sriraam
This paper presents a novel ranking method to select spectral entropy (SE) features that discriminate alcoholic and control visual event-related potentials (ERP'S) in gamma sub-band (30-55 Hz) derived from a 64-channel electroencephalogram (EEG) recording. The ranking is based on a t test statistic that rejects the null hypothesis that the group means of SE values in alcoholics and controls are identical. The SE features with high ranks are indicative of maximal separation between their group means. Various sizes of top ranked feature subsets are evaluated by applying principal component analysis (PCA) and k-nearest neighbor (k-NN) classification...
January 21, 2017: Brain Informatics
https://www.readbyqxmd.com/read/28109781/teasing-apart-coercion-and-surprisal-evidence-from-eye-movements-and-erps
#2
Francesca Delogu, Matthew W Crocker, Heiner Drenhaus
Previous behavioral and electrophysiological studies have presented evidence suggesting that coercion expressions (e.g., began the book) are more difficult to process than control expressions like read the book. While this processing cost has been attributed to a specific coercion operation for recovering an event-sense of the complement (e.g., began reading the book), an alternative view based on the Surprisal Theory of language processing would attribute the cost to the relative unpredictability of the complement noun in the coercion compared to the control condition, with no need to postulate coercion-specific mechanisms...
January 18, 2017: Cognition
https://www.readbyqxmd.com/read/28109666/diminished-auditory-sensory-gating-during-active-auditory-verbal-hallucinations
#3
Robert J Thoma, Andrew Meier, Jon Houck, Vincent P Clark, Jeffrey D Lewine, Jessica Turner, Vince Calhoun, Julia Stephen
Auditory sensory gating, assessed in a paired-click paradigm, indicates the extent to which incoming stimuli are filtered, or "gated", in auditory cortex. Gating is typically computed as the ratio of the peak amplitude of the event related potential (ERP) to a second click (S2) divided by the peak amplitude of the ERP to a first click (S1). Higher gating ratios are purportedly indicative of incomplete suppression of S2 and considered to represent sensory processing dysfunction. In schizophrenia, hallucination severity is positively correlated with gating ratios, and it was hypothesized that a failure of sensory control processes early in auditory sensation (gating) may represent a larger system failure within the auditory data stream; resulting in auditory verbal hallucinations (AVH)...
January 18, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28109399/targeting-kras-mutated-non-small-cell-lung-cancer-a-history-of-failures-and-a-future-of-hope-for-a-diverse-entity
#4
REVIEW
Alexios Matikas, Dimitrios Mistriotis, Vasilios Georgoulias, Athanasios Kotsakis
Lung cancer remains the leading cause of cancer-related deaths in both men and women. However, the discovery of several oncogenic driver mutations and the development of immune checkpoint inhibitors resulted in improved clinical outcomes for most patients. Although activating KRAS mutations are the most common recurring molecular events in lung adenocarcinoma, little progress has been made during the past decades with no new agents being approved for this indication. The elucidation of the underlying biology of this diverse patient subgroup offers great potential and renewed hope regarding the rational development, rigorous evaluation and subsequent approval of novel targeted agents and combinations which will effectively suppress compensatory escape routes and the emergence of resistance, issues that have plagued previous attempts...
February 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28109160/antibiotics-for-infection-prevention-after-excision-of-the-cervical-transformation-zone
#5
REVIEW
Chumnan Kietpeerakool, Bandit Chumworathayi, Jadsada Thinkhamrop, Butsakorn Ussahgij, Pisake Lumbiganon
BACKGROUND: Excision of the transformation zone of the cervix is the most commonly used approach to treat cervical precancerous lesions (cervical intraepithelial neoplasia (CIN)) to reduce the risk of developing cervical cancer. As the excision of the transformation zone leaves a raw area on the cervix, there is a risk of infection following the procedure. The incidence of infection after cold knife conization (CKC) is 36%, whereas the incidence for large loop excision of the transformation zone (LLETZ, also known as loop electrical excision procedure (LEEP)) is much lower (0...
January 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28108878/stigma-and-conspiracy-beliefs-related-to-pre-exposure-prophylaxis-prep-and-interest-in-using-prep-among-black-and-white-men-and-transgender-women-who-have-sex-with-men
#6
Lisa A Eaton, Seth C Kalichman, Devon Price, Stephanie Finneran, Aerielle Allen, Jessica Maksut
The HIV/AIDS epidemic in the US continues to persist, in particular, among race, sexual orientation, and gender minority populations. Pre-exposure prophylaxis (PrEP), or using antiretroviral medications for HIV prevention, is an effective option, but uptake of PrEP has been slow. Sociocultural barriers to using PrEP have been largely underemphasized, yet have the potential to stall uptake and, therefore, warrant further understanding. In order to assess the relationships between potential barriers to PrEP (i...
January 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28108852/missing-the-target-the-neural-processing-underlying-the-omission-error
#7
Rinaldo Livio Perri, Donatella Spinelli, Francesco Di Russo
The omissions are infrequent errors consisting in missing responses to the target stimuli. This is the first study aimed at investigating the brain activities associated with omissions in a decision-making task. We recorded event-related potentials (ERPs) in 12 subjects which reported a suitable number of omissions in a visual go/no-go task. We investigated both the pre- and post-stimulus brain activities associated with correct and omitted trials. The electrical neuroimaging technique (BESA) was adopted to extract the anterior insula (aIns) activity associated with the prefrontal P2 component (pP2) peaking about 300 ms after the stimulus and reflecting the stimulus-response mapping process...
January 20, 2017: Brain Topography
https://www.readbyqxmd.com/read/28108507/flt3-and-jak2-mutations-in-acute-myeloid-leukemia-promote-inter-chromosomal-homologous-recombination-and-the-potential-for-copy-neutral-loss-of-heterozygosity-cn-loh
#8
Terry J Gaymes, Azim Mohamedali, Anthony Eiliazadeh, David Darling, Ghulam J Mufti
Acquired copy neutral loss-of-heterozygosity (CN-LOH) is a frequent occurrence in myeloid malignancies and is often associated with resistance to standard therapeutic modalities and poor survival. Here we show that constitutive signaling driven by mutated FLT3 and JAK2 confers inter-chromosomal homologous recombination (iHR), a precedent for CN-LOH. Using a targeted recombination assay, we determined significant iHR activity in internal tandem duplication FLT3 (FLT3-ITD) and JAK2V617F mutated cells. Sister chromatid exchanges, a surrogate measure of iHR, was significantly elevated in primary FLT3-ITD normal karyotype acute myeloid leukemia (NK-AML) compared to wild type FLT3 NK-AML...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108415/how-does-mindfulness-modulate-self-regulation-in-pre-adolescent-children-an-integrative-neurocognitive-review
#9
REVIEW
Rebekah Jane Kaunhoven, Dusana Dorjee
Pre-adolescence is a key developmental period in which complex intrinsic volitional methods of self-regulation are acquired as a result of rapid maturation within the brain networks underlying the self-regulatory processes of attention control and emotion regulation. Fostering adaptive self-regulation skills during this stage of development has strong implications for physical health, emotional and socio-economic outcomes during adulthood. There is a growing interest in mindfulness-based programmes for pre-adolescents with initial findings suggesting self-regulation improvements, however, neurodevelopmental studies on mindfulness with pre-adolescents are scarce...
January 17, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28108054/acute-respiratory-compromise-in-the-emergency-department-a-description-and-analysis-of-3571-events-from-the-get-with-the-guidelines-resuscitation%C3%A2-registry
#10
Carl Mathias Karlsson, Michael W Donnino, Hans Kirkegaard, Michael N Cocchi, Maureen Chase, Lars W Andersen
BACKGROUND: Respiratory events requiring the use of assisted ventilation are relatively common in the emergency department (ED), and can be associated with substantial morbidity and mortality. OBJECTIVE: The aim of this study was to describe and elucidate patient and event characteristics associated with mortality and progression to cardiac arrest in ED patients with acute respiratory compromise. METHODS: Data were obtained from the multicenter Get With the Guidelines-Resuscitation® registry...
January 17, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28107899/childhood-trauma-perpetrated-by-close-others-psychiatric-dysfunction-and-urological-symptoms-in-patients-with-interstitial-cystitis-bladder-pain-syndrome
#11
Chui-De Chiu, Ming-Huei Lee, Wei-Chih Chen, Hoi Lam Ho, Huei-Ching Wu
BACKGROUND: A psychosocial phenotype of interstitial cystitis/bladder pain syndrome (IC/BPS), a urogenital condition without known organic causes, was proposed. While psychosocial variables, including interpersonal maltreatment and negative affect, were studied in association with IC/BPS, the specificities of the relationships between childhood trauma by close others, psychiatric dysfunctions (negative affect and post-traumatic psychopathology), and urogenital symptoms have not been established...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28107696/a-mini-review-of-c-met-as-a-potential-therapeutic-target-in-melanoma
#12
REVIEW
Doa'a G F Al-U'datt, Belal A A Al-Husein, Ghazi Raji Qasaimeh
Melanoma is the third highest rated cancer in prevalence. Surgery, radiotherapy and targeted/biological therapies in addition to chemotherapy are available options for management of this cancer. Met is an appealing target for management of this type of cancer, since it targets many cancer vital processors, such as angiogenesis, cell growth, scattering and differentiation. In this review, we provide an overview about pathway abnormalities associated with melanoma. We also provide a summary about the events involved in Met signaling and related signaling molecules...
January 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28107228/contribution-of-oxidative-stress-to-non-aids-events-in-hiv-infected-patients
#13
Mar Masiá, Sergio Padilla, Marta Fernández, Xavier Barber, Santiago Moreno, José Antonio Iribarren, Joaquín Portilla, Alejandro Peña, Francesc Vidal, Félix Gutiérrez
OBJECTIVE: Recognition of potentially modifiable mechanisms implicated in the pathogenesis of non-AIDS events (NAEs) might help improve outcomes of HIV-infected individuals. HIV infection has been associated with increased oxidative stress. We assessed the association between F2-isoprostanes and serious NAEs, and whether they improve the predictive performance of inflammation and coagulation biomarkers. METHODS: Prospective multicenter cohort. Individuals who had an incident serious NAE and two sex and age matched participants with no events were selected...
January 18, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28107106/news-reports-and-their-role-in-child-agricultural-injury-prevention
#14
Barbara Marlenga, Richard L Berg, Susan S Gallagher
OBJECTIVES: The news media can be important sources of health information. We examined news reports of child agricultural injuries to assess what was reported and to evaluate potential implications for health communication and surveillance efforts. METHODS: A content analysis was conducted of a convenience sample of 113 US news reports from 2012 to 2014 involving agricultural injuries to children less than 18 years-of-age. The data collection instrument included basic elements of injury surveillance, as well as variables related to injury causation and prevention...
January 20, 2017: Journal of Agromedicine
https://www.readbyqxmd.com/read/28106121/endoplasmic-reticulum-oxidative-stress-triggers-tgf-beta-dependent-muscle-dysfunction-by-accelerating-ascorbic-acid-turnover
#15
Diego Pozzer, Mariagrazia Favellato, Marco Bolis, Roberto William Invernizzi, Francesca Solagna, Bert Blaauw, Ester Zito
Endoplasmic reticulum (ER) and oxidative stress are two related phenomena that have important metabolic consequences. As many skeletal muscle diseases are triggered by oxidative stress, we explored the chain of events linking a hyperoxidized ER (which causes ER and oxidative stress) with skeletal muscle dysfunction. An unbiased exon expression array showed that the combined genetic modulation of the two master ER redox proteins, selenoprotein N (SEPN1) and endoplasmic oxidoreductin 1 (ERO1), led to an SEPN1-related myopathic phenotype due to excessive signalling of transforming growth factor (TGF)-beta...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106001/impact-of-femoral-artery-puncture-using-digital-subtraction-angiography-and-road-mapping-on-vascular-and-bleeding-complications-after-transfemoral-transcatheter-aortic-valve-implantation
#16
Mohamed El-Mawardy, Bettina Schwarz, Martin Landt, Dmitriy Sulimov, Julia Kebernik, Abdelhakim Allali, Bjoern Becker, Ralph Toelg, Gert Richardt, Mohamed Abdel-Wahab
AIMS: The use of large-diameter sheaths carries the risk of significant vascular and bleeding complications after transfemoral transcatheter aortic valve implantation (TAVI). In this analysis, we sought to assess the impact of a modified femoral artery puncture technique using digital subtraction angiography (DSA) and road mapping during transfemoral TAVI on periprocedural vascular and bleeding events. METHODS AND RESULTS: This is a retrospective analysis of transfemoral TAVI patients included in a prospective institutional database...
January 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28105726/biological-stress-indicators-as-risk-markers-for-increased-alcohol-use-following-traumatic-experiences
#17
Sebastian Trautmann, Markus Muehlhan, Clemens Kirschbaum, Hans-Ulrich Wittchen, Michael Höfler, Tobias Stalder, Susann Steudte-Schmiedgen
Alcohol misuse is a common sequela of traumatic event experiences causing considerable morbidity and mortality. Although biological stress indicators have been identified as useful risk markers for the development of trauma-related disorders, no such biological indicators exist for the risk of increased alcohol use after trauma exposure. This is the first study to prospectively investigate the predictive value of long-term cortisol levels and acute stress reactivity for the risk of increased alcohol use following traumatic events...
January 20, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28104969/assessment-of-a-clinical-pharmacy-activity-in-a-pediatric-inpatient-department-in-cote-d-ivoire
#18
Danho Pascal Abrogoua, César Pacôme Békégnran, Bi Marius Gro, Elisée Doffou, Madeleine Amorissani Folquet
BACKGROUND: Clinical pharmacy activities in a pediatric inpatient department help to improve the management of patients clinically and economically. OBJECTIVE: To assess the relevance of pharmaceutical interventions (PIs) in a pediatric inpatient department in Abidjan (Cote d'Ivoire). MATERIALS AND METHODS: We carried out a cross-sectional, descriptive study from February to September 2014. The information collected was classified according to the classification of drug-related problems (DRPs) and PIs of the French Society of Clinical Pharmacy...
December 2016: Journal of Basic and Clinical Pharmacy
https://www.readbyqxmd.com/read/28103842/one-size-doesn-t-fit-all-cross-sectional-associations-between-neighborhood-walkability-crime-and-physical-activity-depends-on-age-and-sex-of-residents
#19
Andrea S Richardson, Wendy M Troxel, Madhumita B Ghosh-Dastidar, Robin Beckman, Gerald P Hunter, Amy S DeSantis, Natalie Colabianchi, Tamara Dubowitz
BACKGROUND: Low-income African American adults are disproportionately affected by obesity and are also least likely to engage in recommended levels of physical activity (Flegal et al. JAMA 303(3):235-41, 2010; Tucker et al. Am J Prev Med 40(4):454-61, 2011). Moderate-to-vigorous physical activity (MVPA) is an important factor for weight management and control, as well as for reducing disease risk (Andersen et al. Lancet 368(9532):299-304, 2006; Boreham and Riddoch J Sports Sci 19(12):915-29, 2001; Carson et al...
January 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28103746/language-based-social-feedback-processing-with-randomized-senders-an-erp-study
#20
Sebastian Schindler, Johanna Kissler
Recently, several event-related potential (ERP) studies investigated the impact of sender attributions on language-based social feedback processing. Results showed very early responses to the social context, while interactions or effects of emotional content started later. However, in these studies, sender attribution was varied across blocks, possibly inducing unspecific, anticipatory effects. Here, who was giving feedback was disclosed simultaneously with the decision itself. Participants' ERPs differentiated between attributed senders starting with the Early Posterior Negativity (EPN)...
January 20, 2017: Social Neuroscience
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