Executive pay decreases at Invisalign maker Align Technology

Align Technology disclosed a big pay decrease for its CEO and a sizable compensation increase for its median employee in 2025, according to a recent filing. The dental device developer was the world’s 32nd-largest medical device company on the latest Medical Design & Outsourcing Medtech Big 100 ranking by revenue. That ranking was based on…

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High resolution, contrast-enhanced X-ray microscopy of the ex vivo human cochlea: technical feasibility and biometric case analysis

BackgroundThe human cochlea is a fragile, spiral-shaped sensory organ for hearing that is deeply embedded within the dense otic capsule bone, making accurate post-mortem anatomical studies difficult when using conventional histological approaches requiring sectioning. X-ray microscopy (XRM) is a non-destructive radiological imaging modality that combines geometric and optical magnification to achieve high-resolution 3D visualization.MethodsHere, we evaluated the ability of XRM to resolve the entire inner ear, including delineating soft tissue and bony structures, in trimmed human temporal bones ex vivo following lumen perfusion with a reversible iodine-based contrast-enhancing solution. After optimizing contrast incubation conditions, XRM datasets were acquired, reconstructed, and used to generate 3D volume renderings of the inner ear.ResultsXRM enabled visualization of the entire cochlea and vestibular system, from millimeter-scale labyrinthine anatomy to submillimeter and micrometer-scale cochlear structures, including spiral ganglion nerve fiber bundles and sensory cell rows. Quantitative analysis in a representative case demonstrated an increasing width-to-height ratio of the organ of Corti from the basal to the apical cochlear turns, consistent with histology images and prior anatomical studies.ConclusionThese findings demonstrate that XRM provides high-resolution, sectioning-free ex vivo 3D visualization of human cochlear anatomy and may enable quicker and more faithful correlation of cochlear pathology with otologic disorders than traditional histology.

Academic burnout in higher education: a multimodal study of resting-state EEG microstate correlates beyond trait anxiety, depressive symptoms, and self-efficacy in Chinese undergraduates

BackgroundAcademic burnout is a mental-health-relevant outcome of higher-education stress, but its relationship with spontaneous brain dynamics remains unclear. EEG microstates are quasi-stable scalp-potential configurations indexing millisecond-level transitions between large-scale resting brain states. This study tested whether resting-state EEG microstate dynamics are associated with academic burnout beyond trait anxiety, depressive symptoms, and general self-efficacy as perceived coping capacity.MethodsParticipants were 330 Chinese undergraduates (94 men, 236 women; mean age = 18.31 years, SD = 0.84). They completed self-report measures and an eyes-closed resting-state EEG recording. Academic burnout total score was the primary outcome. Covariate-adjusted partial correlations examined burnout–microstate associations. Hierarchical regression tested the incremental value of selected microstate markers.ResultsHigher academic burnout was associated with higher trait anxiety (r = 0.539, p < 0.001), higher depressive symptoms (r = 0.526, p < 0.001), and lower general self-efficacy (r = -0.474, p < 0.001). After adjustment for age, sex, trait anxiety, depressive symptoms, and general self-efficacy, greater burnout was associated with shorter microstate D duration (partial r = -0.196, q = 0.0049), higher microstate C occurrence (partial r = 0.172, q = 0.0081), shorter mean microstate duration, and higher mean occurrence. The psychological block explained substantial variance in burnout (R² = 0.417); adding microstate D duration and microstate C occurrence produced a small but significant improvement in model fit (ΔR² = 0.025, p = 0.001). In a scale-midpoint sensitivity analysis, the higher-burnout group showed shorter class D duration after covariate adjustment (adjusted B = -3.38 ms, 95% CI [-6.12, -0.64], p = 0.016). Dimension-specific analyses indicated that microstate associations were mainly evident for dejection and low sense of accomplishment, not the behavioral (improper-behavior) component.ConclusionAcademic burnout in undergraduates was primarily linked to internalizing distress and lower perceived coping capacity. Resting-state EEG microstate dynamics, especially shorter class D duration, provided modest incremental information, suggesting reduced temporal persistence of a canonical resting-state configuration among students with higher burnout. These findings do not establish a diagnostic EEG marker or a burnout-specific neural mechanism, but support multimodal, context-sensitive research on academic stress and mental health in higher education.

Social talk in virtual spaces: an observational study of pragmatic communication in children with autism spectrum disorder during avatar-mediated interaction

IntroductionImmersive virtual environments offer organized social contexts for the observation of communication behaviors under standardized and interactive conditions. This study adopts a VR-based observational approach to examine pragmatic social communication behaviors exhibited during structured social scenarios in autistic children, with a specific focus on social reciprocity and context-appropriate verbal communication. MethodsThe study included twenty-five children between the ages of 5 and 12 who were diagnosed with Autism Spectrum Disorder (ASD). A structured social scenario was presented by the Virtual Reality (VR) system to elicit social communication behaviors, including greeting initiation and response, attention to speakers, turn-taking, and context-appropriate verbal responses. Social communication outcomes were assessed using selected domains of the Indian Scale for Assessment of autism (ISAA). In addition, the Social Communication Questionnaire (SCQ) and a VR-based Pragmatic Social Communication Observation Checklist (VR-PSCOC) were used to assess in-scenario behaviors. ResultsThe post-VR analysis revealed measurable changes across the assessed pragmatic social communication domains during repeated exposure to the VR scenarios. Variations were observed in the ISAA social-communication related domains, including speech-language, communication, and social relationship and reciprocity scores (p<0.001). Repeated VR exposure was associated with higher observational scores, indicating observable changes in social communication behaviors within the structured virtual environment. DiscussionThe findings indicate that the structured VR-based social scenarios provide a feasible environment for observing and characterizing social communication behaviors in children with ASD within controlled interaction settings.

Graham’s death from aortic dissection raises questions about preventing the rare disorder

Sen. Lindsey Graham’s death Saturday at age 71 following an aortic dissection has focused attention on the life-threatening condition. Details about his diagnosis and treatment are not available while a final death certificate is pending, but experts agree on both how serious it is and how suddenly it erupts after a long prelude.

One cardiothoracic surgeon had questions about the South Carolina senator’s care. 

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