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AIMS To clarify whether patients with obstructive sleep apnea syndrome (OSAS) have executive dysfunction, to identify the domains of executive function affected and to establish the severity of any dysfunction. METHODS A full-night polysomnography and a comprehensive neuropsychological assessment focusing on executive functions were conducted on 40 newly(More)
OBJECTIVES To provide an update on recent research concerning obstructive sleep apnea syndrome (OSAS) and executive functions. METHODS A systematic review was carried out on reports drawn from MEDLINE and PSYCHLIT (January 1990-December 2005) and identified from lists of references in these reports. The selection criteria were met by 40 articles. (More)
The aims of this study are to clarify whether patients with obstructive sleep apnea syndrome (OSAS) have a decline in verbally or visually-based cognitive abilities and whether the possible decline is related to particular sleep depth changes. In addition, the effect of continuous positive airway pressure (CPAP) on the possible changes is investigated.(More)
AIMS To assess the impact of continuous positive airway pressure (CPAP) treatment on executive dysfunction in patients with obstructive sleep apnea syndrome (OSAS). METHODS At baseline, 20 OSAS patients and 17 healthy controls underwent polysomnography and neuropsychological assessment focusing on executive functions. After at least 6 months of CPAP(More)
OBJECTIVE - To provide an update on recent research on depression and anxiety in obstructive sleep apnea syndrome (OSAS). METHODS - A review was carried out on reports drawn from MEDLINE and PSYCHLIT (January 1995-June 2006) and identified from their list of references. The selection criteria were met by 55 articles. RESULTS - Sample sizes in the reviewed(More)
RATIONALE AND OBJECTIVES The aim of this study was to examine changes of brain iron content and diffusion patterns longitudinally in early-stage Parkinson's disease (PD) patients using T2- and T2*-based magnetic resonance imaging (MRI) over 2-year follow-up. MATERIALS AND METHODS We imaged 32 PD patients with tremor and 19 healthy controls. A follow-up(More)
All-night EEG recordings from 12 male apnea patients and 12 age-matched healthy control subjects were studied in the present work. The spectral mean frequency was used to provide computational sleep depth curves from two frontopolar and two central EEG channels. Our previously presented computational parameters quantifying the properties of the sleep depth(More)
To provide a comprehensive review of studies on information processing speed in patients with obstructive sleep apnea syndrome (OSAS) as compared to healthy controls and normative data, and to determine whether continuous positive airway pressure (CPAP) treatment improves information processing speed. A systematic review was performed on studies drawn from(More)
Driving ability of three patients having a right hemisphere infarct and residual visual inattention was examined. The neuropsychological examination included the Peripheral Perception Test and the Signal Detection Test from the Vienna Test System, and the Behavioural Inattention Test (BIT). Driving ability was assessed with an on-road evaluation. The(More)
BACKGROUND Few of the structural changes caused by Parkinson's disease (PD) are visible in magnetic resonance imaging (MRI) with visual inspection but there is a need for a method capable of observing the changes beyond the human eye. Texture analysis offers a technique that enables the quantification of the image gray-level patterns. PURPOSE To(More)