Gerard A. Kennedy

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STUDY OBJECTIVES Previous studies have demonstrated that as little as 18 hours of sleep deprivation can cause deleterious effects on performance. It has also been suggested that sleep deprivation can cause a "tunnel-vision" effect, in which attention is restricted to the center of the visual field. The current study aimed to replicate these behavioral(More)
Like enucleation, lateral hypothalamic (LH) lesions sever the connection between the retina and the pineal thereby simulating ambient exposure to constant darkness. While LH lesions have been employed to study either circadian function or Parkinson's disease (PD) independently, the application of such lesions to study circadian involvement specifically in(More)
Sleep loss, widespread in today's society and associated with a number of clinical conditions, has a detrimental effect on a variety of cognitive domains including attention. This study examined the sequelae of sleep deprivation upon BOLD fMRI activation during divided attention. Twelve healthy males completed two randomized sessions; one after 27 h of(More)
Animal models for neuropsychiatric disorders are implemented for the purpose of investigating a single or multiple aspects of a specific disease entity. In Parkinson's disease (PD) several models have been utilised to study the biochemical and behavioural consequences of dopamine (DA) neurone degeneration with the intent of further understanding the(More)
Driving is a complex task, which can be broken down into specific cognitive processes. In order to determine which components contribute to drowsy driving impairments, the current study examined simulated driving and neurocognitive performance after one night of sleep deprivation. Nineteen professional drivers (age 45.3±9.1) underwent two experimental(More)
The aim of this study was to determine whether wrist actigraphy could be used to assess the daytime effects of stimulant medication in the treatment of narcolepsy. Nine subjects with narcolepsy/cataplexy (medicated and unmedicated) were compared with matched control subjects. Data were collected over 4 days in the subjects' home. It was found that the(More)
OBJECTIVE To determine the association between insomnia, obstructive sleep apnoea (OSA), and comorbid insomnia-OSA and depression, while controlling for relevant lifestyle and health factors, among a large population-based sample of US adults. METHOD We examined a sample of 11,329 adults (≥18 years) who participated in the National Health and Nutrition(More)
OBJECTIVE Excessive daytime sleepiness (EDS) is a common clinical symptom that affects women more than men. However, the association of excessive sleepiness with depressive and anxiety disorders in the broader population is unclear. The aim of this study was, therefore, to examine the association between excessive daytime sleepiness as measured by the(More)
The main sources of stress reported by 423 Australian final-year high school students using the Academic Stress Questionnaire were school-related as expected. The highest sources of this stress were examinations and outcomes, too much to do, worry over future, making choices about career, studying for examinations, amount to learn, need to do well imposed(More)
This study aimed at investigating the relationship between hours of homework, stress, and mood disturbance in senior high school students, 141 boys and 228 girls, recruited from high schools across Victoria, Australia. Participants' ages ranged from 16 to 18 years (M = 16.6, SD = .6). A 1-wk. homework diary, a Self-reported Stress scale, and the Profile of(More)