Evaluating the impact of weight and center of mass on comfort in head-mounted displays.

This study investigates the impact of the weight and centre of mass (COM) position of Head-Mounted Displays (HMDs) on the subjective evaluation of users during prolonged wearing tasks. This study involved 88 participants completing 1860 sets of experiments under three conditions: sitting still, turning the head, and moving, providing subjective evaluations of wearing HMDs. A static torque testing device was used to simulate neck torque under flexion states.

Mendelian randomization analysis reveals causal effects of migraine and its subtypes on early-onset ischemic stroke risk.

Previous observational studies have suggested at a potential link between migraine, particularly migraine with aura, and the susceptibility to early-onset ischemic stroke. We aimed to investigate the causal effects of genetically determined migraine and its subtypes on the risk of early-onset ischemic stroke using the two-sample Mendelian randomization method. Genetic instrumental variables associated with migraine and its subtypes were acquired from two sources with the largest sample sizes available.

Associations between Metals, Serum Folate, and Cognitive Function in the Elderly: Mixture and Mediation Analyses.

Exposure to metals may potentially impact cognitive health in the elderly; however, the evidence remains ambiguous. The specific role of serum folate in this relationship is also unclear. We aimed to evaluate the individual and joint impact of metals on cognition in the elderly from the United States and explore the potential mediating effect of serum folate.

Investigating students' perceptions of the medical education environment and learning autonomy in blended learning in pediatrics: a cross-sectional study.

Background: In the process of education reform, carrying out continuous educational environment measurement is necessary. This study aimed to evaluate the perceptions of the medical education environment and learning autonomy in blended learning in pediatrics among clinical medicine students, as well as the relationship between these two constructs.

Methods: A cross-sectional study was conducted on clinical medical students from the First Clinical School of Wuhan University who had completed the blended learning courses of pediatrics.