1,158,999 results match your criteria: "Canada; ¶¶Stanford University[Affiliation]"

Identifying factors that contribute to collision avoidance behaviours while walking in a natural environment.

Sci Rep

January 2025

Department of Biomedical Physiology and Kinesiology, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.

Busy walking paths, like in a park, city centre, or shopping mall, frequently necessitate collision avoidance behaviour. Lab-based research has shown how different situation- and person-specific factors, typically studied independently, affect avoidance behaviour. What happens in the real world is unclear.

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Salivary cytokines have the potential to serve as biomarkers for evaluating cancer progression and treatment response in specific cancer types. This study explored salivary cytokine profiles in pediatric cancer patients and healthy controls, examining changes during chemotherapy. We conducted a prospective study involving newly diagnosed cancer patients and healthy controls under 19 years old.

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Dilated SE-DenseNet for brain tumor MRI classification.

Sci Rep

January 2025

Department of Applied Mathematics, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.

In the field of medical imaging, particularly MRI-based brain tumor classification, we propose an advanced convolutional neural network (CNN) leveraging the DenseNet-121 architecture, enhanced with dilated convolutional layers and Squeeze-and-Excitation (SE) networks' attention mechanisms. This novel approach aims to improve upon state-of-the-art methods of tumor identification. Our model, trained and evaluated on a comprehensive Kaggle brain tumor dataset, demonstrated superior performance over established convolution-based and transformer-based models: ResNet-101, VGG-19, original DenseNet-121, MobileNet-V2, ViT-L/16, and Swin-B across key metrics: F1-score, accuracy, precision, and recall.

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Exploring when to exploit: the cognitive underpinnings of foraging-type decisions in relation to psychopathy.

Transl Psychiatry

January 2025

Radboud University, Donders Institute for Brain, Cognition and Behavior, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands.

Impairments in reinforcement learning (RL) might underlie the tendency of individuals with elevated psychopathic traits to behave exploitatively, as they fail to learn from their mistakes. Most studies on the topic have focused on binary choices, while everyday functioning requires us to learn the value of multiple options. In this study, we evaluated the cognitive correlates of naturalistic foraging-type decision-making and their electrophysiological signatures in a community sample (n = 108) with varying degrees of psychopathic traits.

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Rationally manipulating the in-situ formed catalytically active surface of catalysts remains a significant challenge for achieving highly efficient water electrolysis. Herein, we present a bias-induced activation strategy to modulate in-situ Ga leaching and trigger the dynamic surface restructuring of lamellar Ir@Ga2O3 for the electrochemical oxygen evolution reaction. The in-situ reconstructed Ga-O-Ir interface sustains high water oxidation rates at OER overpotentials.

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Enantioselective Borylcupration/Cyclization of Alkene-Tethered Oxime Esters.

Angew Chem Int Ed Engl

January 2025

University of Toronto, Dept. of Chemistry, 80 St. George Street, M5S 3H6, Toronto, CANADA.

A copper-catalyzed enantioselective synthesis of borylated 1-pyrrolines from γ,δ-unsaturated oxime esters is reported. Twenty-four novel 1-pyrroline derivatives are reported in yields ranging from 26% to 96% and enantioselectivities from 74.5:25.

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Objective: This study examined and compared the truck stop needs and preferences of long-haul truck drivers (LHTD) based on gender.

Methods: LHTD were recruited from various provincial and federal trucking associations and trucking companies across Canada. A sample of 406 drivers completed an online survey that consisted of questions on demographics, health conditions and behaviours, and preferences for truck stop amenities.

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Think zebras: challenges and opportunities for treating rare cancers.

Trends Cancer

January 2025

Wellcome Sanger Institute, Hinxton, UK; Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro, Qro, Mexico. Electronic address:

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A retrospective analysis of medical student authorship in highest impact radiology journal publications.

Curr Probl Diagn Radiol

January 2025

Department of Radiology, University of British Columbia, Vancouver General Hospital, 899 W 12th Avenue, Vancouver, British Columbia, V5Z 1M9, Canada.

Objectives: To assess medical student authorship in radiology research, focusing on the prevalence and impact of student articles, demographic trends, and potential barriers and opportunities for involvement.

Methods: We retrospectively assessed original research and review papers from 2018 to 2022 in the top five radiology journals based on their 2022 Impact Factor. Three reviewers manually validated and classified articles by medical student (MS) and non-MS authorship.

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Decisions at the end of life in health professionals.

Med Clin (Barc)

January 2025

Universidad Alfonso X El Sabio, Villanueva de la Cañada, Madrid, España.

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Background: This study describes the proportion of Ontario adults with and without intellectual and developmental disabilities (IDD) who used community- and hospital-based healthcare in the first 2 years of the pandemic compared with the year pre-COVID-19.

Methods: Linked health administrative databases identified 87 341 adults with IDD and also adults without IDD living in Ontario, Canada. For each cohort, counts and proportions of adults who used different types of healthcare services were reported for the pre-COVID-19 year (16 March 2019 to 14 March 2020) and the first two COVID-19 years (15 March 2020 to 14 March 2021 and 15 March 2021 to 14 March 2022).

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Objective: To evaluate the psychological reactions, perceptions and opinions of cardiovascular preparticipation screening (PPS) among young competitive athletes.

Methods: This convergent parallel mixed-methods study recruited 222 athletes (mean age: 18.7 years) who underwent PPS at a Canadian university.

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Background: Older adults living in social housing report poor health and access to healthcare services. This study aimed to estimate the prevalence of chronic diseases, influenza vaccination and cancer screenings among social housing residents versus non-residents in Ontario, Canada.

Methods: We conducted a population-based cohort study for all health-insured Ontarians alive and aged 40 or older as of 1 January 2020.

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Impact of changes in primary care attachment: a scoping review.

Fam Med Community Health

January 2025

Institut du Savoir Montfort, Ottawa, Ontario, Canada

Objectives: Primary care attachment represents an inclusive, equitable and cost-effective way of enhancing health outcomes globally. However, the growing shortage of family physicians threatens to disrupt patient-provider relationships. Understanding the consequences of these disruptions is essential for guiding future research and policy.

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Background: Natural hazards, such as earthquakes, pose a significant risk to both the public and healthcare professionals, jeopardising patient safety due to the disruption of healthcare systems and services. This study aimed to explore the lived experiences of healthcare professionals concerning patient safety during natural hazards, specifically earthquakes.

Methods: Employing a descriptive phenomenological approach, the study followed the Consolidated Criteria for Reporting Qualitative Research guidelines.

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Mutations in hnRNP A1 drive neurodegeneration and alternative RNA splicing of neuronal gene targets.

Neurobiol Dis

January 2025

Office of the Saskatchewan Multiple Sclerosis Clinical Research Chair, University of Saskatchewan, Saskatoon, SK S7K 0M7, Canada; Neurology Division, Department of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0X8, Canada. Electronic address:

RNA binding protein dysfunction is a pathogenic feature of multiple neurological diseases, including multiple sclerosis (MS). Neurodegeneration (the loss of, or damage to neurons and axons) is the primary driver of disease progression in MS. Herein, we utilized a novel, neuron-specific model of neurodegeneration by transducing primary mouse neurons with mutant forms of the RNA binding protein heterogeneous nuclear ribonucleoprotein A1 (hnRNP A1) identified from MS patients, including one within the M9-nuclear localization sequence of hnRNP A1 (A1(P275S)) and a second in the prion-like domain of hnRNP A1 (A1(F263S)) to test the hypothesis that neuronal hnRNP A1 dysfunction drives neurodegeneration in MS.

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Background: CheckMate 8HW prespecified dual primary endpoints, assessed in patients with centrally confirmed microsatellite instability-high or mismatch repair-deficient status: progression-free survival with nivolumab plus ipilimumab compared with chemotherapy as first-line therapy and progression-free survival with nivolumab plus ipilimumab compared with nivolumab alone, regardless of previous systemic treatment for metastatic disease. In our previous report, nivolumab plus ipilimumab showed superior progression-free survival versus chemotherapy in first-line microsatellite instability-high or mismatch repair-deficient metastatic colorectal cancer in the CheckMate 8HW trial. Here, we report results from the prespecified interim analysis for the other primary endpoint of progression-free survival for nivolumab plus ipilimumab versus nivolumab across all treatment lines.

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Topography of putative bi-directional interaction between hippocampal sharp-wave ripples and neocortical slow oscillations.

Neuron

January 2025

Neuroscience Institute, Langone Medical Center, New York University, New York, NY, USA; Department of Physiology and Neuroscience, Langone Medical Center, New York University, New York, NY, USA; Department of Neurology, Langone Medical Center, New York University, New York, NY, USA. Electronic address:

Systems consolidation relies on coordination between hippocampal sharp-wave ripples (SWRs) and neocortical UP/DOWN states during sleep. However, whether this coupling exists across the neocortex and the mechanisms enabling it remains unknown. By combining electrophysiology in mouse hippocampus (HPC) and retrosplenial cortex (RSC) with wide-field imaging of the dorsal neocortex, we found spatially and temporally precise bi-directional hippocampo-neocortical interaction.

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Despite trust being associated with a range of favorable outcomes across high-performing team contexts (e.g., enhanced satisfaction, performance), efforts to investigate the meaning of trust in sport remain limited.

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Toward cognitive models of misophonia.

Hear Res

January 2025

Department of Psychology, Concordia University, Montreal, QC, Canada; International Laboratory for Brain, Music and Sound Research (BRAMS), Montreal, QC, Canada; Centre for Research on Brain, Language and Music (CRBLM), Montreal, QC, Canada. Electronic address:

Misophonia is a disorder in which specific common sounds such as another person breathing or chewing, or the ticking of a clock, cause an atypical negative emotional response. Affected individuals may experience anger, irritability, annoyance, disgust, and anxiety, as well as physiological autonomic responses, and may find everyday environments and contexts to be unbearable in which their 'misophonic stimuli' (often called 'trigger sounds') are present. Misophonia is gradually being recognized as a genuine problem that causes significant distress and has negative consequences for individuals and their families.

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Introduction: Blunt chest trauma represents a major risk factor for complications in polytrauma patients. Various scoring systems have emerged, but their impact is not fully appreciated. This review evaluates changes in chest trauma scoring over time and potential shifts in complication rates linked to modified surgical approaches in long bone fractures.

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Radiofrequency-thermocoagulation in pediatric epilepsy surgery: A systematic review and pooled analysis of cases.

Seizure

January 2025

Department of Clinical Neurological Sciences, Western University, London, ON. Canada; Department of Paediatrics, Western University, London, ON. Canada. Electronic address:

Objective: To conduct a systematic review on radiofrequency thermocoagulation (RF-TC) in pediatric epilepsy surgery. In addition, due to the low number of dedicated pediatric series, to conduct a pooled analysis of cases published in the literature.

Methods: We conducted a literature search using PUBMED and EMBASE which produced 432 results.

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Objective: GM1 gangliosidosis is a rare lysosomal storage disorder characterized by the accumulation of GM1 gangliosides in neuronal cells, resulting in severe neurodegeneration. Currently, limited data exists on the brain volumetric changes associated with this disease. This study focuses on the late-infantile and juvenile subtypes of type II GM1 gangliosidosis, aiming to quantify brain volumetric characteristics to track disease progression.

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