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A psychomotor vigilance task (PVT) is a sustained-attention, reaction-timed task that measures the consistency with which subjects respond to a visual stimulus.Research indicates increased sleep debt or sleep deficit correlates with deteriorated alertness, slower problem solving, declined psychomotor skills, and increased rate of false responses.
As demonstrated in the Rosekind study, pilots who took a forty-minute nap were much more alert during the last 90 minutes of the flight and they also responded better on the psychomotor vigilance test (PVT) showing faster response rates and fewer lapses.
To overcome this problem, scientists developed the Universal Fatigue Algorithm based on a data-driven approach. Drowsiness is a state determined by independent non-EEG measures. The Oxford Sleep Resistance Test (OSLER test) and the Psychomotor Vigilance Test (PVT) are the most commonly used measures in sleep research. [10]
The Mackworth Clock was used to establish one of the fundamental findings in the vigilance and sustained attention literature: the vigilance decrement (signal detection accuracy) decreases notably after 30 minutes on task. The test continues to be used today in vigilance research in various forms, including computer-displayed versions. [3]
Paraventricular nucleus of thalamus, a portion of the thalamus; Portal vein thrombosis, a liver disease involving blood clots; Psychomotor vigilance task, a sustained-attention, reaction-timed task that measures the speed with which subjects respond to a visual stimulus
DT: [5] The Determination Test (DT) is a test of reactive stress tolerance and the associated ability to react. The respondent is presented with color stimuli and acoustic signals. He/she reacts by pressing the appropriate buttons on the response panel. RT: [6] The Reaction Test (RT) provides a measurement of motor speed and reaction speed. The ...
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The severity of EDS can be quantified by subjective scales, such as the Epworth Sleepiness Scale and the Stanford Sleepiness Scale, and also by objective tests, like actigraphy, psychomotor vigilance task, maintenance of wakefulness test (MWT), [25] multiple sleep latency test (MSLT) although as per latest research studies, the effectiveness of ...