Increased attentional demand has been shown to reduce motor performance, leading to increases in accidents, particularly in elderly populations. While these deficits have been well documented behaviorally, their cortical correlates are less well known. Increased attention has been shown to affect activity in prefrontal regions of the cortex. However there have been varying results within past r...

We conducted two studies to test and refine the hypothesis that, when undersocialized individuals focus on events of immediate interest, they allocate too large a proportion of their processing resources to those events and have little attention available for processing other important events. College students who completed the Socialization (So) scale (Gough, 1960) performed visual and auditor...

The aim of this study was to address whether deficits in the central cholinergic activity may contribute to the increased difficulty to allocate attention during gait in the elderly with heightened risk of falls. We recruited 50 participants with a history of two or more falls (33 patients with Parkinson's Disease and 17 older adults) and 14 non-fallers age-matched adults. Cholinergic activity ...

Selecting the correct stocks and funds is essential for portfolio management allocation. In order to reduce risk of portfolio, it better diversify assets select within more than one sector. Another step would be setting with firefighter case or without it. The illustrates that we suppose there a who has 25 years service as will retired in Florida. Florida government gives two choices. He takes ...

Previous neuroimaging studies have documented the existence of attention signals in human visual cortex, but little is known about the time course of these signals. A recent study reported persistent activity in early visual cortex whose duration was correlated with the duration of sustained attention. The present study extends these findings by modeling the time course of sustained attention s...

The human visual system has a remarkable ability to automatically attend to only salient regions, known as focus of attention in complex scenes. This ability enables us to allocate limited perceptual and cognitive resources on task relevant visual input. It is well known that attention also plays an important role when humans perceive visual quality of images. The goal of machine vision systems...

Human perceptual and cognitive abilities are limited resources. Attention is the mechanism used to allocate such resources in the most effective way. Current technologies, in addition to allowing fast access to information and people, should be designed to support human attentional processes onwhich they impose further strain. This paper analyses the issues related to thedesignof systems capabl...