A planning technique for probabilistic domains is presented, inspired by cognitive perceptual processes. The plan evolves as a by-product of situation understanding using spreading activation for cooperative support-building, and an annealing process to kill off weak results. We have implemented the technique and compared its results with one of the top planning techniques for this type of prob...

BACKGROUND AND PURPOSE Mild cognitive impairment (MCI) is common after stroke and associated with poor outcome. However, the mechanisms underlying poststroke MCI (PS-MCI) are insufficiently understood. We performed amyloid-β positron emission tomography (PET) in a prospective cohort of stroke survivors to determine the role of amyloid pathology in PS-MCI. METHODS We studied 178 consecutive pa...

Diffusion tensor imaging (DTI) has been used to study microstructural white matter alterations in a variety of conditions including normal aging and Alzheimer's disease (AD). White matter hyperintensities (WMH) are common in cognitively healthy elderly as well as in AD and exhibit elevated mean diffusivity (MD) and reduced fractional anisotropy (FA). However, the effect of WMH on statistical an...

OBJECTIVES To assess cognitive impairment and depression in aging former professional football (National Football League [NFL]) players and to identify neuroimaging correlates of these dysfunctions. DESIGN We compared former NFL players with cognitive impairment and depression, cognitively normal retired players who were not depressed, and matched healthy control subjects. SETTING Research cent...

This pilot study examined dispositional coping styles and distress among cognitively impaired older adults (n = 28), anxious/depressed older adults (n = 42) and non-distressed older adults (n = 25). Participants completed the Coping Orientations to Problems Experienced Scale (COPE) and the Brief Symptom Inventory. Internal consistency analyses showed that the COPE was reliably completed by the ...

The transition from normal aging to mild cognitive impairment to Alzheimer disease (AD) is often indistinct. Imaging studies suggest early changes in posterior brain regions, including posterior temporoparietal and occipital cortex, but pathologic studies show initial changes in the medial temporal lobe with progressive neocortical involvement as cognition deteriorates. We evaluated the regiona...

Corresponding Author: Melissa Shahrom Department of Infrastructure Engineering, University of Melbourne, Australia and Universiti Teknologi MARA Selangor, Malaysia Email: [email protected] Abstract: This paper presents an algorithm, namely the private navigation algorithm. The aim of this algorithm is to bridge the gap between high quality navigation services and low quality of location ...

According to the hierarchical model of sensory information processing, sensory inputs are transmitted to cortical areas, which are crucial for complex auditory and speech processing, only after being processed in subcortical areas (Hickok and Poeppel, 2007; Rauschecker and Scott, 2009). However, studies using electroencephalography (EEG) indicate that distinguishing simultaneous auditory inputs...