Age and dementia related differences in spatial navigation within an immersive virtual environment.

Background: Immersive virtual reality (VR) is an innovative tool that can allow study of human spatial navigation in a realistic but controlled environment. The purpose of this study was to examine age- and Alzheimer's disease-related differences in route learning and memory using VR.

Material/methods: The spatial memory task took place in a VR environment set up on a Computer Workstation.

[The high level swimmer articular shoulder complex].

Objective: To analyze the shoulder joint complex in high level swimmers. We formulated the assumption that high level swimming weakens this complex, resulting in laxity of the anterior-inferior capsuloligamentous structures with atraumatic anterior instability, impingement with rotator cuff tendonitis and muscle imbalance of the rotator cuff muscles.

Method: Two 20-subject groups took part in this study (a group of high level swimmers and a group of sedentary people).

A platform for combining virtual reality experiments with functional magnetic resonance imaging.

How the brain functions during behavioural tasks conducted in virtual reality (VR) remains largely unresolved. This issue is extremely important both in terms of establishing the benefits of VR through basic science, as well as for future optimization of tasks conducted in VR environments. Here, the authors describe their current work to develop a testing platform for conducting VR experiments that can be probed by functional magnetic resonance imaging (fMRI) to measure brain activity.

Metabolisable energy content of diets and broiler performance as affected by wheat specific weight and enzyme supplementation.

1. Two experiments were performed with male, Ross broiler chicks to study the relationship between wheat specific weight and performance parameters and the effects of xylanase inclusion in diets of different wheat specific weight (SW). 2.