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When rendering the visual scene for near-eye head-mounted displays, accurate knowledge of the geometry of the displays, scene objects, and eyes is required for the correct generation of the binocular images. Despite possible design and calibration efforts, these quantities are subject to positional and measurement errors, resulting in some misalignment of the images projected to each eye. Previous research investigated the effects in virtual reality (VR) setups that triggered such symptoms as eye strain and nausea.

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Preanalytical Sedimentation Effects on Hematological Tests.

J Appl Lab Med

December 2024

HealthPartners Medical Laboratory, Pathology Lab, Bloomington, MN, United States.

Introduction: Specimens suspected of errors related to low hemoglobin or changes in hemoglobin beyond that of clinically explained variations during hospital stays are frequently redrawn under the auspices that they are contaminated. When lack of an indwelling IV eliminates contamination as a possibility, evaluation of the specimen between the time of collection and testing should occur.

Methods: As part of a quality improvement project, we investigated the impact of sedimentation on collected blood specimens not immediately transferred to their respective tubes from a syringe.

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Biomarkers.

Alzheimers Dement

December 2024

Linus Health, Boston, MA, USA.

Background: Digital neuropsychological assessment easily captures behavior previously not obtainable by traditional pencil-and-paper tests. Verbal serial list learning tests are commonly used to assess for putative neurogenerative syndromes. Recognition test performance is often expressed compiling simple 'yes/ no' responses, but fail to assess process metrics such as the latency to respond to individual recognition test items.

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Background: Neuroinflammatory processes, assessed by cytokines such as interleukins, are implicated in vascular disease and amyloid-β (Aβ) burden. White matter hyperintensities (WMH), markers of small vessel cerebrovascular disease, are associated with memory impairment and Alzheimer's disease (AD)-related cortical atrophy. Here, we used structural equation modeling (SEM) to test whether inflammatory markers are related to markers of AD pathology and neurodegeneration through their impact on WMH.

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Background: Walking is a key facilitator of healthy ageing and may reduce risk of cognitive decline in older adults. To develop suitable, accessible interventions, we must objectively consider the socio-ecological factors which influence participation in walking activities. For example, walking may be influenced by the volume and type of activities one's partner participates in (i.

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