Neuropsychology
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Parkinson's disease (PD) is associated with behavioral disorders that can affect social functioning but are poorly understood. Since emotional and cognitive social processes are known to be crucial in social relationships, impairment of these processes may account for the emergence of behavioral disorders. ⋯ Emotional and cognitive social processes were found to be impaired in Parkinson's disease. This impairment may account for the emergence of social behavioral disorders.
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To examine the relative contributions of injury characteristics and noninjury child and family factors as predictors of postconcussive symptoms (PCS) following mild traumatic brain injury (TBI) in children. ⋯ Injury characteristics predict PCS in the first months following mild TBI but show a decreasing contribution over time. In contrast, noninjury factors are more consistently related to persistent PCS.
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Previous research has yielded inconclusive results on the relationship between self-reported sleep quality and cognitive performance in healthy old age. Discrepant findings have been reported regarding processing speed and attention, executive functions, and episodic memory. However, sleep quality has also been found to be related to cognitive performance in patients with depression. Our aim was to clarify the relationship between sleep quality and cognitive performance in healthy older adults, and to evaluate the moderating role of subclinical depression on this relationship. ⋯ Our findings suggest that poor sleep quality might affect higher order cognitive processes, particularly in those reporting higher levels of subclinical depression. Findings on the relationships between sleep quality, cognitive functioning, and depressive symptomatology are discussed in relation to neurobehavioral theories of sleep.
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Many investigations have found deficits in visuospatial perception in children born preterm, however, it is not clear whether the deficits are specific to visuospatial perception or the consequences of deficits in other functional areas, which often accompany preterm birth. This study investigated whether children born preterm show a specific deficit in visuospatial perception. ⋯ Children born preterm performed more poorly than full-term controls on four visuospatial perceptual tasks. Although intelligence and parental education were also associated with performance, preterm birth contributed independently of these factors on three of four tasks. Many children born preterm are thus multiply disadvantaged on visuospatial tasks: the lower IQ scores and parental educational levels frequently found in this group increase the deficit associated with preterm birth.
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Individuals' cognitive abilities predict functional outcomes following traumatic brain injury (TBI). However, it is not known to what extent concurrent cognitive abilities affect the magnitude or the rate of functional recovery. The current study modeled the progression of functional outcome as it related to background, injury severity, and cognitive variables over the first year postinjury. ⋯ The findings indicate that consideration of cognitive ability, rather than reliance on demographic and injury severity variables, provide a more accurate representation of functional outcome over the first year postinjury. In addition, the results suggest that specific cognitive domains, particularly executive functions, are likely to have the strongest effect on functional outcomes.