Publications by authors named "William Turner"

Purpose: Class III obesity (body mass index [BMI] ≥ 40 kg·m) is associated with high rates of Cesarean deliveries and postpartum hemorrhage, with increased maternal and fetal morbidity. The doses of oxytocin and carbetocin are two to four times higher at Cesarean delivery in patients with class III obesity. We sought to investigate the efficacy of carbetocin 80 µg iv compared with oxytocin 1 IU iv (plus infusion) at elective Cesarean delivery in parturients with class III obesity.

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  • Visual illusions are systematic misperceptions that reveal how our brains construct visual experiences, with the "frame effect" being a notable example where moving frames mislead our perception of an object's position.
  • A newly identified illusion, the "split stimulus effect," shows that symmetrical motion of overlaid frames can cause observers to perceive two instances of a single stimulus, as evidenced by participants sometimes reporting two dots when only one was shown.
  • This study also explored factors influencing the illusion, such as frame speed and spatial attention, and demonstrated that individuals can hold conflicting perceptual predictions about the same object, shedding light on the underlying mechanisms of visual perception.
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Purpose: The purpose of our study was to determine the minimum effective dose of oxytocin maintenance infusion required to maintain adequate uterine tone in 90% of patients (ED) after administration of the initial bolus at elective Cesarean delivery (CD) under spinal anesthesia.

Methods: We conducted a prospective, double-blind dose-finding study with biased coin up-down design. Immediately after delivery, a 1-IU oxytocin bolus was administered, followed by a maintenance infusion.

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Borderline Personality Disorder (BPD) is characterized by rapidly shifting emotional, interpersonal, and behavioral symptoms, and is often co-morbid with mood and anxiety disorders. Females are more likely to be diagnosed with BPD than males and exhibit greater functional impairment. Hormonal fluctuations, particularly in estrogen levels, may influence the manifestation of BPD symptoms.

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Purpose: To evaluate the performance of MRI for detection of bladder cancer following transurethral resection of bladder tumour (TURBT).

Methods: This single-centre retrospective study included forty-one consecutive patients with bladder cancer who underwent bladder MRI after TURBT. Two uroradiologists retrospectively assessed the presence of tumour using bladder MRI with and without DWI (diffusion weighted imaging) using a five-point Likert scale.

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Because neural processing takes time, the brain only has delayed access to sensory information. When localising moving objects this is problematic, as an object will have moved on by the time its position has been determined. Here, we consider predictive motion extrapolation as a fundamental delay-compensation strategy.

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Motion-position illusions (MPIs) are visual motion illusions in which motion signals bias the perceived position of an object. Due to phenomenological similarities between these illusions, previous research has assumed that some are caused by common mechanisms. However, this assumption has yet to be directly tested.

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Evidence for treatment effects of group-based Intimate Partner Violence (IPV) perpetrators programmes remains, at best, inconclusive. In the present review, systematic/meta-analytic reviews were used to identify randomised controlled trials and a meta-summary approach was employed to identify methodological challenges in the design and conduct of these trials. Of the fifteen studies identified, seven were comparative effectiveness trials.

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Hierarchical predictive coding networks are a general model of sensory processing in the brain. Under neural delays, these networks have been suggested to naturally generate oscillatory activity in approximately the α frequency range (∼8-12 Hz). This suggests that α oscillations, a prominent feature of EEG recordings, may be a spectral "fingerprint" of predictive sensory processing.

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Background: Following sexual abuse, children and young people may develop a range of psychological problems, including anxiety, depression, post-traumatic stress disorder (PTSD), and a range of behaviour problems. Those working with children and young people experiencing these problems may use one or more of a range of psychological approaches.

Objectives: To assess the relative effectiveness of psychological interventions compared to other treatments or no treatment controls, to overcome psychological consequences of sexual abuse in children and young people up to 18 years of age.

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  • Advanced generation biofuels, particularly bioethanol from marine biomass like seaweed, show promise as a sustainable alternative to fossil fuels as societies aim for net-zero carbon emissions.
  • Research on the marine yeast M15 revealed its impressive tolerance to high concentrations of glucose, xylose, and ethanol, along with its ability to produce varying amounts of ethanol from different types of seaweed substrates.
  • While initial experiments with actual seaweed hydrolysates yielded lower ethanol concentrations, improved results were achieved using adapted yeast strains and concentrated seaweed extracts, suggesting potential for meeting industrial production standards.
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CHIRPS-GEFS is an operational data set that provides daily bias-corrected forecasts for next 1-day to ~15-day precipitation totals and anomalies at a quasi-global 50-deg N to 50-deg S extent and 0.05-degree resolution. These are based on National Centers for Environmental Prediction (NCEP) Global Ensemble Forecast System version 12 (GEFS v12) precipitation forecasts.

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  • People’s willingness to change decisions after making a judgment depends on their confidence level.
  • In experiments, participants judging brightness found that higher levels of absolute evidence made them less accurate but more confident in their decisions.
  • The studies indicate that initial high confidence can make people less likely to reconsider or correct their decisions.
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Here we report the one-pot, cell-free enzymatic synthesis of the plant monoterpene nepetalactol starting from the readily available geraniol. A pair of orthogonal cofactor regeneration systems permitted NAD-dependent geraniol oxidation followed by NADPH-dependent reductive cyclization without isolation of intermediates. The orthogonal cofactor regeneration system maintained a high ratio of NAD to NADH and a low ratio of NADP to NADPH.

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We often need to rapidly change our mind about perceptual decisions in order to account for new information and correct mistakes. One fundamental, unresolved question is whether information processed prior to a decision being made ('pre-decisional information') has any influence on the likelihood and speed with which that decision is reversed. We investigated this using a luminance discrimination task in which participants indicated which of two flickering greyscale squares was brightest.

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  • The study focused on how the duration of COVID-19 symptoms affects hospital outcomes for patients.
  • Researchers analyzed data from over 4,000 adult COVID-19 patients in New York City to identify key predictors of severe health deterioration.
  • Findings indicated that patients presenting earlier in their illness had worse outcomes based on age, existing health conditions, and specific clinical markers, highlighting the importance of symptom duration in risk assessment.
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How we exert control over our decision-making has been investigated using conflict tasks, which involve stimuli containing elements that are either congruent or incongruent. In these tasks, participants adapt their decision-making strategies following exposure to incongruent stimuli. According to conflict monitoring accounts, conflicting stimulus features are detected in medial frontal cortex, and the extent of experienced conflict scales with response time (RT) and frontal theta-band activity in the Electroencephalogram (EEG).

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Since 2015, Sub-Saharan Africa (SSA) has experienced an unprecedented rise in acute food insecurity (AFI), and current projections for the year 2020 indicate that more than 100 million Africans are estimated to receive emergency food assistance. Climate-driven drought is one of the main contributing factors to AFI, and timely and appropriate actions can be taken to mitigate impacts of AFI on lives and livelihoods through early warning systems. To support this goal, we use observations of peak Normalized Difference Vegetation Index (NDVI) as an indicator of seasonal drought conditions following a rainy season to show that delays in the onset of the rainy season (onset date) can be an effective early indicator of seasonal drought conditions.

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To navigate the world safely, we often need to rapidly 'change our mind' about decisions. Current models assume that initial decisions and change-of-mind decisions draw upon common sources of sensory evidence. In two-choice scenarios, this evidence may be 'relative' or 'absolute'.

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Contemporary theoretical accounts of metacognition propose that action-related information is used in the computation of perceptual decision confidence. We investigated whether the amount of expended physical effort, or the 'motoric sunk cost' of a decision, influences perceptual decision confidence judgements in humans. In particular, we examined whether people feel more confident in decisions which required more effort to report.

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Black Lives Matter is a clarion call for racial equality and racial justice. With the arrival of Africans as slaves in 1619, a racial hierarchy was formed in the United States. However, slavery is commonly dismissed as that less than noble aspect of the United States' history without really confronting the legacies of racial inequality and racial injustice left in its wake.

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In everyday life we are constantly updating our moral judgements as we learn new information. However, this judgement updating process has not been systematically studied. We investigated how people update their moral judgements of fairness-related actions of others after receiving contextual information regarding the deservingness of the action recipient.

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The extent of somatic mutation and clonal selection in the human bladder remains unknown. We sequenced 2097 bladder microbiopsies from 20 individuals using targeted ( = 1914 microbiopsies), whole-exome ( = 655), and whole-genome ( = 88) sequencing. We found widespread positive selection in 17 genes.

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