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https://www.readbyqxmd.com/read/28813565/selectivity-hyperselectivity-and-the-tuning-of-v1-neurons
#1
Kedarnath P Vilankar, David J Field
In this article, we explore two forms of selectivity in sensory neurons. The first we call classic selectivity, referring to the stimulus that optimally stimulates a neuron. If a neuron is linear, then this stimulus can be determined by measuring the response to an orthonormal basis set (the receptive field). The second type of selectivity we call hyperselectivity; it is either implicitly or explicitly a component of several models including sparse coding, gain control, and some linear-nonlinear models. Hyperselectivity is unrelated to the stimulus that maximizes the response...
August 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28813555/analysis-of-item-level-bias-in-the-bayley-iii-language-subscales-the-validity-and-utility-of-standardized-language-assessment-in-a-multilingual-setting
#2
Shaun K Y Goh, Elaine K H Tham, Iliana Magiati, Litwee Sim, Shamini Sanmugam, Anqi Qiu, Mary L Daniel, Birit F P Broekman, Anne Rifkin-Graboi
Purpose: The purpose of this study was to improve standardized language assessments among bilingual toddlers by investigating and removing the effects of bias due to unfamiliarity with cultural norms or a distributed language system. Method: The Expressive and Receptive Bayley-III language scales were adapted for use in a multilingual country (Singapore). Differential item functioning (DIF) was applied to data from 459 two-year-olds without atypical language development...
August 15, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28812828/how-the-spectre-of-societal-homogeneity-undermines-equitable-healthcare-for-refugees-comment-on-defining-and-acting-on-global-health-the-case-of-japan-and-the-refugee-crisis
#3
Oliver Razum, Judith Wenner, Kayvan Bozorgmehr
Recourse to a purported ideal of societal homogeneity has become common in the context of the refugee reception crisis - not only in Japan, as Leppold et al report, but also throughout Europe. Calls for societal homogeneity in Europe originate from populist movements as well as from some governments. Often, they go along with reduced social support for refugees and asylum seekers, for example in healthcare provision. The fundamental right to health is then reduced to a citizens' right, granted fully only to nationals...
October 17, 2016: International Journal of Health Policy and Management
https://www.readbyqxmd.com/read/28812400/new-benzodiazepine-and-z-hypnotic-users-and-disability-pension-an-eight-year-nationwide-observational-follow-up-study
#4
Ingunn F Tvete, Trine Bjørner, Tor Skomedal
OBJECTIVE: To compare how newly initiated treatment with benzodiazepines, Z-hypnotics or both associates with the reception of disability pension among 40,661 individuals of a working age. DESIGN: Prescription register study. SETTING: Norwegian nationwide prescriptions socio-economic and disability status data. METHODS: Cox regression analyses. SUBJECTS: New benzodiazepine or Z-hypnotic users. MAIN OUTCOME MEASURE: Time to receive disability pension given benzodiazepine or Z-hypnotic use or both...
August 16, 2017: Scandinavian Journal of Primary Health Care
https://www.readbyqxmd.com/read/28811333/arabidopsis-lorelei-a-maternally-expressed-imprinted-gene-promotes-early-seed-development
#5
Yanbing Wang, Tatsuya Tsukamoto, Jennifer Ashley Noble, Xunliang Liu, Rebecca Mosher, Ravishankar Palanivelu
n flowering plants the female gametophyte controls pollen tube reception immediately before fertilization and regulates seed development immediately after fertilization, although controlling mechanisms remain poorly understood. Previously, we showed that LORELEI (LRE), which encodes a putative glycosylphosphatidylinositol (GPI)-anchored membrane protein, is critical for pollen tube reception by the female gametophyte before fertilization and initiation of seed development after fertilization. Here, we show that LRE is expressed in the synergid, egg, and central cells of the female gametophyte and in the zygote and proliferating endosperm of the seed...
August 15, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28810356/relationship-cognitions-and-longitudinal-trajectories-of-sexual-risk-behavior-among-young-gay-and-bisexual-men-the-p18-cohort-study
#6
Stephanie H Cook, Perry N Halkitis, Farzana Kapadia
This study examines how romantic relationship cognitions are associated with changes of condomless anal sex among emerging adult gay and bisexual men. The sample was drawn from four waves of a prospective cohort study ( N = 598; Mage = 18.2). Results suggest that condomless anal sex increased over the emerging adulthood period. Romantic relationship fear was associated with increased receptive condomless anal sex. Perceptions of greater romantic relationship control increased the likelihood of having insertive and receptive condomless anal sex...
October 1, 2016: Journal of Health Psychology
https://www.readbyqxmd.com/read/28810163/decoding-the-architecture-and-origins-of-mechanisms-for-developmental-polyphenism
#7
REVIEW
Joana Projecto-Garcia, Joseph F Biddle, Erik J Ragsdale
Developmental polyphenism affords a single genotype multiple solutions to match an organism to its environment. Because polyphenism is the extreme example of how development deviates from a linear genetic blueprint, it demands a genetic explanation for how environmental cues shunt development to hypothetically alternative modules. We highlight several recent advances that have begun to illuminate genetic mechanisms for polyphenism and how this recurring developmental novelty may arise. An emerging genetic knowledge of polyphenism is providing precise targets for testing hypotheses of how switch mechanisms are built-out of olfactory, nutrient-sensing, hormone-reception, and developmental and genetic buffering systems-to accommodate plasticity...
August 12, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28809898/analog-receiver-for-coherent-optical-analog-radio-over-fiber-transmission
#8
Bernhard Schrenk, Markus Hofer, Thomas Zemen
A receiver for low-cost coherent optical applications is presented. Conceptual simplicity is guaranteed through the use of a monolithic integrated externally modulated laser. Local oscillators and fast photodetectors are provided by the distributed feedback section and electro-absorption modulator of the monolithic laser. The injection-locking feature, which is obtained by virtue of the inline configuration of the receiver, guarantees exact frequency translation during coherent reception and obviates the need for digital signal processing typically employed for the purpose of signal recovery...
August 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28808131/intercellular-communication-via-the-comx-inducing-peptide-xip-of-streptococcus-mutans
#9
Justin Kaspar, Simon A M Underhill, Robert C Shields, Adrian Reyes, Suzanne Rosenzweig, Stephen J Hagen, Robert A Burne
Gram-positive bacteria utilize exported peptides to coordinate genetic and physiological processes required for biofilm formation, stress responses and ecological competitiveness. One example is activation of natural genetic competence by ComR and the comX-inducing peptide (XIP) in Streptococcus mutans Although the competence pathway can be activated by addition of synthetic XIP in defined medium, the hypothesis that XIP is able to function as an intercellular signal molecule has not been rigorously tested...
August 14, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28807864/reducing-diagnostic-turnaround-times-of-exome-sequencing-for-families-requiring-timely-diagnoses
#10
Aurélie Bourchany, Christel Thauvin-Robinet, Daphné Lehalle, Ange-Line Bruel, Alice Masurel-Paulet, Nolwenn Jean, Sophie Nambot, Marjorie Willems, Laetitia Lambert, Salima El Chehadeh-Djebbar, Elise Schaefer, Aurélia Jaquette, Judith St-Onge, Charlotte Poe, Thibaud Jouan, Martin Chevarin, Patrick Callier, Anne-Laure Mosca-Boidron, Nicole Laurent, Mathilde Lefebvre, Frédéric Huet, Nada Houcinat, Sébastien Moutton, Christophe Philippe, Frédéric Tran-Mau-Them, Antonio Vitobello, Paul Kuentz, Yannis Duffourd, Jean-Baptiste Rivière, Julien Thevenon, Laurence Faivre
BACKGROUND AND OBJECTIVE: Whole-exome sequencing (WES) has now entered medical practice with powerful applications in the diagnosis of rare Mendelian disorders. Although the usefulness and cost-effectiveness of WES have been widely demonstrated, it is essential to reduce the diagnostic turnaround time to make WES a first-line procedure. Since 2011, the automation of laboratory procedures and advances in sequencing chemistry have made it possible to carry out diagnostic whole genome sequencing from the blood sample to molecular diagnosis of suspected genetic disorders within 50 h...
August 11, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28807837/characterization-of-two-odorant-binding-proteins-in-spodoptera-exigua-reveals-functional-conservation-and-difference
#11
Nai-Yong Liu, Jia-Yao Zhu, Ting Zhang, Shuang-Lin Dong
As the first biochemical step of olfactory reception and recognition, odorant binding proteins (OBPs) have been demonstrated to be essential. Considering functional diversities of OBPs within a single species, we here extended the characterization of two other OBPs from Spodoptera exigua, belonging to insect Classic OBPs. With a combination of transcriptome and Rapid Amplification of cDNA End (RACE) approaches, two OBP genes in S. exigua were first identified, namely SexiOBP1 and OBP7. Expression pattern analysis revealed that both of them exhibited a distinct expression, where OBP1 was broadly and highly expressed in several tissues including antennae of adults whereas OBP7 was abundant only in the antennae of both sexes, strongly indicative of olfactory roles...
August 11, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28807750/high-resolution-simultaneous-imaging-of-intracranial-and-extracranial-arterial-wall-with-improved-cerebrospinal-fluid-suppression
#12
Lei Zhang, Na Zhang, Jun Wu, Xin Liu, Yiu-Cho Chung
PURPOSE: To develop a technique for three dimensional (3D) high resolution joint imaging of intracranial and extracranial arterial walls with improved cerebrospinal fluid (CSF) suppression and good blood suppression based on T1 weighted sampling perfection with application optimized contrast using different angle evolutions (T1w-SPACE) and to compare this technique (hereafter, iSPACE) with alternating with nutation for tailored excitation (DANTE) prepared SPACE sequence (DANTE-SPACE) for their CSF suppression performance around the mid cerebral arteries (MCA) and blood suppression at carotid arteries...
August 11, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28807395/clinical-validation-of-pinopode-as-a-marker-of-endometrial-receptivity-a-randomized-controlled-trial
#13
Zhang Qiong, Hao Jie, Wang Yonggang, Xu Bin, Zhao Jing, Li Yanping
OBJECTIVE: To determine the clinical value of pinopodes in the human. DESIGN: Randomized controlled trial. SETTING: Academic fertility center. PATIENT(S): From December 2014 to December 2016, in a phase I trial, 363 patients were recruited in their first IVF cycles. In a phase II trial, 136 patients with at least two previous embryo implantation failures were recruited. INTERVENTION(S): In the phase I trial, in the midluteal phase, endometrial tissues were obtained for scanning electron microscopy, and their IVF treatment outcomes were followed up...
August 11, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28807160/treatment-of-chinese-herbal-medicine-for-female-infertility
#14
Dan Jiang, Lily Li, Bai-Yun Zeng
Female infertility is when a woman of reproductive age and sexual active, without contraception, cannot get pregnant after a year and more or keeps having miscarriages. Although conventional treatments for infertility such as hormone therapy, in vitro fertilization and many more, helped many female patients with infertility get pregnant during past a few decades, it is far from satisfactory with prolonging treatment time frames and emotional and financial burden. In recent years, more patients with infertile problems are seeking to alternative and complementary medicines to achieve a better outcome...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28807082/hearing-status-in-patients-with-rheumatoid-arthritis
#15
A Ahmadzadeh, M Daraei, M Jalessi, A A Peyvandi, E Amini, L A Ranjbar, A Daneshi
OBJECTIVE: Rheumatoid arthritis is thought to induce conductive hearing loss and/or sensorineural hearing loss. This study evaluated the function of the middle ear and cochlea, and the related factors. METHODS: Pure tone audiometry, speech reception thresholds, speech discrimination scores, tympanometry, acoustic reflexes, and distortion product otoacoustic emissions were assessed in rheumatoid arthritis patients and healthy volunteers. RESULTS: Pure tone audiometry results revealed a higher bone conduction threshold in the rheumatoid arthritis group, but there was no significant difference when evaluated according to the sensorineural hearing loss definition...
August 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28806861/impact-of-joint-attention-on-social-communication-skills-in-internationally-adopted-children
#16
Stephanie A Moberg, Rowena Ng, Dana E Johnson, Maria G Kroupina
Internationally adopted (IA) children have often experienced early adversity and are at risk for long-term deficiencies in multiple developmental domains. This study examined the association between IA children's joint attention (JA) soon after arrival and later cognitive, communicative, and socioemotional competency 6 months' postadoption. We expected a child's initial JA would positively predict later cognitive, communication, and social ability. IA children (n = 63) adopted from Eastern Europe were seen soon after their arrival into the United States to assess their JA...
August 14, 2017: Infant Mental Health Journal
https://www.readbyqxmd.com/read/28805675/changing-stem-cell-dynamics-during-papillomavirus-infection-potential-roles-for-cellular-plasticity-in-the-viral-lifecycle-and-disease
#17
REVIEW
Katerina Strati
Stem cells and cellular plasticity are likely important components of tissue response to infection. There is emerging evidence that stem cells harbor receptors for common pathogen motifs and that they are receptive to local inflammatory signals in ways suggesting that they are critical responders that determine the balance between health and disease. In the field of papillomaviruses stem cells have been speculated to play roles during the viral life cycle, particularly during maintenance, and virus-promoted carcinogenesis but little has been conclusively determined...
August 12, 2017: Viruses
https://www.readbyqxmd.com/read/28805128/the-reception-of-broadcast-terrorism-recruitment-and-radicalisation
#18
Edgar Jones
The declaration of a caliphate by Islamic State in June 2014 witnessed the recruitment of increasing numbers of foreign terrorist fighters drawn from a diverse range of nations across the globe. This paper seeks to explore the appeal of extreme groups and how recruiters persuade young people to risk either their lives or lengthy terms of imprisonment. The processes of radicalization and recruitment are differentiated and compared with conventional means of encouraging individuals to enlist in state-sanctioned armed forces...
August 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/28803967/igdb-2-an-ig-fniii-protein-binds-the-ion-channel-lgc-34-and-controls-sensory-compartment-morphogenesis-in-c-elegans
#19
Wendy Wang, Elliot A Perens, Grigorios Oikonomou, Yun Lu, Shai Shaham
Sensory organ glia surround neuronal receptive endings (NREs), forming a specialized compartment important for neuronal activity, and reminiscent of glia-ensheathed synapses in the central nervous system. We previously showed that DAF-6, a Patched-related protein, is required in glia of the C. elegans amphid sensory organ to restrict sensory compartment size. LIT-1, a Nemo-like kinase, and SNX-1, a retromer component, antagonize DAF-6 and promote compartment expansion. To further explore the machinery underlying compartment size control, we sought genes whose inactivation restores normal compartment size to daf-6 mutants...
August 10, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28802372/phonological-awareness-in-german-speaking-preschool-children-with-cochlear-implants-3-case-examples
#20
Bianka Wachtlin, Yvonne Turinsky, Frank Herrmann, Blanca Schaefer
OBJECTIVE: The aim was to explore PA skills German-speaking preschool children with cochlea implants (CIs) and how these skills may be related to their speech and language skills. METHODS: Three monolingual German-speaking pre-school children aged 5;04-6;01 with bilateral CIs were tested. Their cognitive, speech and language skills were assessed. Six subtests of a standardized PA test battery were administered (i.e. rhyme identification, rhyme production; phoneme identification- input and -output; phoneme blending-input and -output)...
September 2017: International Journal of Pediatric Otorhinolaryngology
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