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Perceptual decisions, especially for difficult stimuli, can be influenced by choices and outcomes in previous trials. However, it is not well understood how stimulus strength modulates the temporal characteristics as well as the magnitude of trial history influence. We addressed this question using a contrast detection task in freely moving mice. We found that, at lower as compared to higher stimulus contrast, the current choice of the mice was more influenced by choices and outcomes in the past trials and the influence emerged from a longer history. To examine the neural basis of stimulus strength-dependent history influence, we recorded from the secondary motor cortex (M2), a prefrontal region that plays an important role in cue-guided actions and memory-guided behaviors. We found that more M2 neurons conveyed information about choices on the past two trials at lower than at higher contrast. Furthermore, history-trial activity in M2 was important for decoding upcoming choice at low contrast. Thus, trial history influence of perceptual choice is adaptive to the strength of sensory evidence, which may be important for action selection in a dynamic environment.
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http://dx.doi.org/10.1016/j.neuroscience.2019.04.010 | DOI Listing |
Lancet Digit Health
September 2025
Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Biomedical Research Centre, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
Background: New-onset atrial fibrillation, a condition associated with adverse outcomes in the short and long term, is common in patients admitted to intensive care units (ICUs). Identifying patients at high risk could inform trials of preventive interventions and help to target such interventions. We aimed to develop and externally validate a prediction model for new-onset atrial fibrillation in patients admitted to ICUs.
View Article and Find Full Text PDFJNCI Cancer Spectr
September 2025
Pennington Biomedical Research Center, Baton Rouge, LA 70808, United States.
Background: Cancer survivors may be more likely to experience accelerated declines in physical function compared to cancer-free controls, but objective data and knowledge of preventive interventions are limited.
Methods: The Lifestyle Interventions and Independence for Elders (LIFE) study was a multicenter, single-blinded, randomized trial conducted at 8 centers across the United States that enrolled 1635 sedentary adults aged 70-89 years and with physical limitations but who could walk 400 m at baseline, of which 371 (22.7%) reported a history of cancer.
Sci Justice
September 2025
Department of Analytical, Environmental and Forensic Sciences, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, UK. Electronic address:
Wildlife poaching and the trade of wildlife items is a large area of illegal business that is alleged to be worth hundreds of billions of dollars. However, wildlife forensics remains an understudied field even though the consequences of poaching are catastrophic and can lead to the spread of zoonotic disease and a decrease in biodiversity. Even though fingermark analysis is cost-effective, easy to deploy in the field and has a long history of securing criminal convictions in court, wildlife forensics is mainly limited to DNA-based techniques.
View Article and Find Full Text PDFCrit Care Sci
September 2025
Universitätsklinikum Carl Gustav Carus - Dresden, Sachsen, Germany.
The PROtective VEntilation (PROVE) Network is a globally-recognized collaborative research group dedicated to advancing research, education, and collaboration in the field of mechanical ventilation. Established to address critical questions in intraoperative and intensive care ventilation, the network focuses on improving outcomes for patients undergoing mechanical ventilation in diverse settings, including operating rooms, intensive care units, burn units, and resource-limited environments in low- and middle-income countries. The PROVE Network is committed to generating high-quality evidence through a comprehensive portfolio of investigations, including randomized clinical trials, observational research, and meta-analyses.
View Article and Find Full Text PDFJ Natl Cancer Inst
September 2025
Associate Director Laboratory for Molecular Pediatric Pathology (LaMPP), Boston Children's Hospital, Harvard Medical School, Boston, 02115, MA, USA.
Next-generation sequencing (NGS) has transformed cancer care by providing essential insights for diagnosis, prognosis, and treatment. However, variability in testing timing, reporting practices, and interpretation challenges limits its clinical impact. This manuscript highlights key opportunities to optimize somatic reporting, emphasizing the importance of timely testing throughout the cancer care continuum to maximize the diagnostic and therapeutic relevance of findings.
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