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In most reported studies of treatment for narcolepsy, the efficacy of treatment has been assessed in the sleep laboratory, but not in the natural work and home settings. We therefore assessed the sleep/wake patterns of 25 subjects with narcolepsy, whose symptoms were considered under satisfactory control by the subjects and their physicians, using(More)
This study attempted to evaluate the validity of self-reports of memory deficits in narcoleptics by comparing the scores of these patients with the scores of matched control subjects on standardized tests of memory function. After completing a short interview designed to elicit qualitative information about memory difficulties, 30 narcoleptic subjects and(More)
We summarize the present status of VLBI experiments at 3 mm (86 GHz), 2 mm (129-150 GHz) and 1.3 mm (215-230 GHz). We present and discuss a new 3 mm VLBI map of M 87, which has a spatial resolution of only ∼ 20 Schwarzschild radii. We discuss recent results for Sgr A* and argue in favor of new observations within an extended European mm-VLBI network, in(More)
The Mark III very-long-baseline interferometry (VLBI) system allows recording and later processing of up to 112 megabits per second from each radio telescope of an interferometer array. For astrometric and geodetic measurements, signals from two radio-frequency bands (2.2 to 2.3 and 8.2 to 8.6 gigahertz) are sampled and recorded simultaneously at all(More)
STUDY OBJECTIVES Recent studies have shown that extended shifts worked by hospital staff nurses are associated with significantly higher risk of errors, yet little information is available about the ability to remain alert during the nurses' commutes following the completion of an extended work shift. The purpose of this study is to describe the prevalence(More)
Although sleep diaries are widely used in clinical and research settings, only a few studies have compared the subjective information recorded in these diaries to objective information about sleep recorded. The goal of this study was to determine if a sleep diary could be used to obtain reliable data about home sleep/wake patterns over a 24-hour period.(More)
Narcolepsy is considered a homogeneous clinical entity when excessive daytime sleepiness and cataplexy are present. Cataplexy is a polymorphic symptom that can be very mild and is thus subjectively defined. The Multiple Sleep Latency Test (MSLT) is widely used as a diagnostic test for narcolepsy. A short mean sleep latency and multiple sleep onset REM(More)
The purpose of this study was to examine the 24-hour sleep/wake patterns of healthy elderly persons. Data was obtained from 14 elderly subjects who wore a wrist actigraph for 48 hours and completed an activity diary during the monitoring period. Although subjects spent slightly more than 7.5 hours in bed at night, they were asleep for just over 6 hours.(More)
At radio wavelengths, images of the compact radio source Sagittarius A* (Sgr A*) in the Galactic Center are scatter broadened with a λ 2 dependence due to an intervening ionized medium. We present VLBI observations of Sgr A* at 86 GHz using a six station array including the VLBA antennas at Pie Town, Fort Davis and Los Alamos, the 12 m antenna at Kitt Peak(More)