Our goals were to compare three techniques for performing a psychomotor vigilance task (PVT) on touch screen device (fifth-generation iPod) and determine the latency.The PVT is reaction-time test that sensitive sleep loss circadian misalignment. Several tests have been developed devices, but unlike standard laboratory use, these allow responses be recorded at any location device, with contact from finger. In addition, devices exhibit latency in processing time between response registered by...

The aim of this study was to determine the relationship between pilot workload, performance, subjective fatigue, sleep duration, number sectors and flight duration during short-haul operations. Ninety pilots completed a NASA Task Load Index, Psychomotor Vigilance Samn-Perelli fatigue scale on top-of-descent each wore an activity monitor throughout study. Weak, but significant, correlations were revealed workload all factors. Subjective lapses significant predictors workload. Pilots reported...

Sleep loss and circadian misalignment contribute to a meaningful proportion of operational accidents incidents. Countermeasures work scheduling designs aimed at mitigating fatigue are typically evaluated in controlled laboratory environments, but the effectiveness translating such strategies environments can be challenging assess. This manuscript summarizes an approach for collecting sleep, circadian, fatigue, performance data complex environment. We studied 44 airline pilots over 34 days...

There are few studies investigating the impact of fatigue in short-haul flight operations conducted under United States (US) 14 Code Federal Regulations Part 117 and duty limitations rest requirements. In order to understand factors unique operations, we a series focus groups across four major commercial passenger airlines US. Ninety pilots were recruited through emails distributed by airline safety teams labor representatives. Fourteen via an online conferencing platform which participants...

Summary Flight crews are frequently required to work irregular schedules and, as a result, can experience sleep deficiency and fatigue. This study was conducted determine whether perceived fatigue levels objective performance varied by time of day, awake, prior night's duration. Ninety‐five pilots (86 male, 9 female) aged 33 years (±8) volunteered for the study. Participants completed daily diary, Samn‐Perelli scale, psychomotor vigilance task that were before after each flight duty period...

Controlled Rest (CR) refers to a short, unscheduled, voluntary nap opportunity taken by pilots on the flight deck as countermeasure unanticipated fatigue in flight. This study explores profile of CR use long-haul commercial airline. Forty-four wore actiwatches and filled an application-based sleep/work diary for approximately 2 weeks resulting complete records from 239 flights. Timing sleep periods schedules were analyzed relative home-base time. Pearson correlations used assess influence...

Exploration of deep space poses many challenges. Mission support personnel will not be immediately available to assist crewmembers performing complex operations on future long-duration exploration operations. Consequently, it is imperative that have objective, reliable, and non-invasive metrics aid them in determining their fitness for duty prior engaging potentially dangerous tasks. The Robotics On-­Board Trainer (ROBoT) task NASA’s platform training astronauts perform docking grappling...

A NASA Mission Control group provided us the opportunity to conduct a needs analysis, produce software guided by and evaluate prototype. This paper reports our discriminative evaluation of new prototype for Attitude Determination Officers, who plan execute maneuvers International Space Station with their Russian counterparts. On specific, pragmatic level, evidence large performance improvement. Relative legacy software, reduced time errors half in laboratory experiment using valid tasks...

Abstract Introduction Sleep loss and circadian disruption pose a significant risk in aviation. Previous literature has shown that inflight rest facilities influence alertness performance among pilots, but few studies have evaluated cabin crew. The aim of this research was to assess crewmembers sleeping different locations during long-haul out-and-back trip. Methods Twenty-nine (5 male) (Mage = 30.61, SD 2.91) flew the same route (outbound inbound) with an average flight duration 10:41 (±...

Abstract Introduction Long and irregular working hours can lead to fatigue in aviation operations. In some regions, a short nap taken on the flight deck (known as controlled rest) be used countermeasure unexpected in-flight sleepiness. We aimed investigate impact of taking rest neurobehavioral measures at top-of-descent. Methods Data from 120 long-haul (> 6 h duration), unaugmented flights were analyzed (n = 31 pilots). Pilots wore actigraphs completed sleep logs before during trips....

Introduction Fatigue is a known issue in aviation due to long and irregular working hours. In some regions, pilots are permitted sleep during controlled rest period on the flight deck manage unexpected sleepiness. We aimed determine: (1) relative influence of pre-flight sleep-wake history time day likelihood take rest; (2) whether neurobehavioral measures taken predictive use in-flight; (3) impact at top-of-descent. Methods Data from 120 (>6 h duration), unaugmented (two-pilot)...

Sleep loss and circadian misalignment contribute to a meaningful proportion of operational accidents incidents. Countermeasures work scheduling designs aimed at mitigating fatigue are typically evaluated in controlled laboratory environments, but the effectiveness translating such strategies environments can be challenging assess. This manuscript summarizes an approach for collecting sleep, circadian, fatigue, performance data complex environment. We studied 44 airline pilots over 34 days...

Abstract Introduction The Psychomotor Vigilance Task (PVT) is a measure of vigilant attention that commonly used in laboratory environments to assess the neurobehavioral impact sleep loss and circadian misalignment. PVT has been increasing popularity for use field environments; however, potential distraction higher compared lab. It unclear how distractions experienced by individuals taking real world may influence reaction time metrics. We investigated self-reported on outcomes across...

Modern mobile devices provide a convenient platform for collecting research data in the field. But because working of these is often cloaked behind multiple layers proprietary system software, it can be difficult to assess accuracy they produce, particularly case timing. We have been simple visual reaction time experiment, as part fatigue testing protocol known Psychomotor Vigilance Test (PVT) (Dinges et al., 1994). In this protocol, subjects run 5-minute block consisting sequence trials...

Abstract Introduction Pilot sleepiness in flight continues to be an issue aviation due irregular and extended working hours. In some regions of the world, pilots are allowed use in-flight countermeasure called controlled rest, which involves taking a short nap on deck. The this practice is understudied. We aimed investigate whether subjective ratings taken pre-flight predictive rest use. Methods Data from 94 long (> 6 hours duration), non-augmented (two crewmembers) flights were...