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A Comparison Of Subjective And Objective Measures Of Driver Fatigue During A Night Of Sleep Deprivation
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Book Synopsis A Comparison of Subjective and Objective Measures of Driver Fatigue During a Night of Sleep Deprivation by : Karolina Alicja Kozuchowski
Download or read book A Comparison of Subjective and Objective Measures of Driver Fatigue During a Night of Sleep Deprivation written by Karolina Alicja Kozuchowski and published by . This book was released on 2005 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309392527 Total Pages :273 pages Book Rating :4.3/5 (93 download)
Book Synopsis Commercial Motor Vehicle Driver Fatigue, Long-Term Health, and Highway Safety by : National Academies of Sciences, Engineering, and Medicine
Download or read book Commercial Motor Vehicle Driver Fatigue, Long-Term Health, and Highway Safety written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-09-12 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are approximately 4,000 fatalities in crashes involving trucks and buses in the United States each year. Though estimates are wide-ranging, possibly 10 to 20 percent of these crashes might have involved fatigued drivers. The stresses associated with their particular jobs (irregular schedules, etc.) and the lifestyle that many truck and bus drivers lead, puts them at substantial risk for insufficient sleep and for developing short- and long-term health problems. Commercial Motor Vehicle Driver Fatigue, Long-Term Health and Highway Safety assesses the state of knowledge about the relationship of such factors as hours of driving, hours on duty, and periods of rest to the fatigue experienced by truck and bus drivers while driving and the implications for the safe operation of their vehicles. This report evaluates the relationship of these factors to drivers' health over the longer term, and identifies improvements in data and research methods that can lead to better understanding in both areas.
Book Synopsis Sleep Disorders and Sleep Deprivation by : Institute of Medicine
Download or read book Sleep Disorders and Sleep Deprivation written by Institute of Medicine and published by National Academies Press. This book was released on 2006-10-13 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical practice related to sleep problems and sleep disorders has been expanding rapidly in the last few years, but scientific research is not keeping pace. Sleep apnea, insomnia, and restless legs syndrome are three examples of very common disorders for which we have little biological information. This new book cuts across a variety of medical disciplines such as neurology, pulmonology, pediatrics, internal medicine, psychiatry, psychology, otolaryngology, and nursing, as well as other medical practices with an interest in the management of sleep pathology. This area of research is not limited to very young and old patientsâ€"sleep disorders reach across all ages and ethnicities. Sleep Disorders and Sleep Deprivation presents a structured analysis that explores the following: Improving awareness among the general public and health care professionals. Increasing investment in interdisciplinary somnology and sleep medicine research training and mentoring activities. Validating and developing new and existing technologies for diagnosis and treatment. This book will be of interest to those looking to learn more about the enormous public health burden of sleep disorders and sleep deprivation and the strikingly limited capacity of the health care enterprise to identify and treat the majority of individuals suffering from sleep problems.
Book Synopsis Caffeine for the Sustainment of Mental Task Performance by : Institute of Medicine
Download or read book Caffeine for the Sustainment of Mental Task Performance written by Institute of Medicine and published by National Academies Press. This book was released on 2002-01-07 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report from the Committee on Military Nutrition Research reviews the history of caffeine usage, the metabolism of caffeine, and its physiological effects. The effects of caffeine on physical performance, cognitive function and alertness, and alleviation of sleep deprivation impairments are discussed in light of recent scientific literature. The impact of caffeine consumption on various aspects of health, including cardiovascular disease, reproduction, bone mineral density, and fluid homeostasis are reviewed. The behavioral effects of caffeine are also discussed, including the effect of caffeine on reaction to stress, withdrawal effects, and detrimental effects of high intakes. The amounts of caffeine found to enhance vigilance and reaction time consistently are reviewed and recommendations are made with respect to amounts of caffeine appropriate for maintaining alertness of military personnel during field operations. Recommendations are also provided on the need for appropriate labeling of caffeine-containing supplements, and education of military personnel on the use of these supplements. A brief review of some alternatives to caffeine is also provided.
Book Synopsis Ocular Indicators of Sleepiness: Implications for Drowsy Driving Prevention in Shift Workers by : Suzanne Ftouni
Download or read book Ocular Indicators of Sleepiness: Implications for Drowsy Driving Prevention in Shift Workers written by Suzanne Ftouni and published by . This book was released on 2013 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Australia, approximately 20% of motor vehicle collisions result from fatigue or sleepiness-related driving, making it one of the most common causes of preventable motor vehicle crashes (MVC). The shift working population is found to be overrepresented in sleepiness-related vehicle crashes due to the effect of circadian misalignment and sleep loss, resulting in excessive sleepiness and neurobehavioural performance decline during waking hours. It is therefore essential that effective countermeasures to the deleterious effects of shift work are developed. A significant barrier to the development of effective countermeasures is the lack of real-time and practical measures of alertness.A number of methods have been developed to objectively assess sleepiness or alertness levels while driving, including infrared oculography. This method utilises eye blink characteristics to quantify physiological sleepiness, as eye blinks associated with the onset of sleep display unique properties that reflect sleep- and wake-related CNS changes. Oculometrics have also shown potential in assessing sleepiness that is associated with attentional performance impairment. The dissertation examined, i) the utility of oculometrics as objective indicators of sleepiness in relation to validated measures of performance, vigilance, and subjective sleepiness, in healthy male volunteers under a highly controlled laboratory environment; ii) the response of ocular measures of sleepiness and attentional performance in night shift workers who were exposed to a simulated laboratory night shift during their circadian day, compared to those tested in their circadian night; and iii) the association between oculometrics and unsafe driving events during commutes to and from night shift work. The first study demonstrated the influence of homeostatic and circadian variation on oculometrics with sleep deprivation. The temporal dynamics of oculometrics were strongly phase-locked with validated measures of performance, vigilance, and subjective sleepiness, and established their potential to detect sleepiness-related attentional lapses. The second study in this dissertation showed the utility of oculometrics to measure sleepiness that is associated with circadian misalignment in night shift workers. The study found that shift workers who did not biologically adapt to the night shift displayed higher levels of sleepiness as measured by oculometrics, as well as increases in objective vigilance (EEG delta power frequency band), subjective sleepiness, and neurobehavioural performance, compared to those who showed biological adaptation. The study is the first to demonstrate the sleepiness-related ocular responses to circadian misalignment in shift work. Lastly, the final study in the dissertation demonstrated the potential of oculometrics to detect sleepiness-related driving performance impairment following night shift work. The study found that ocular measures of sleepiness were associated with increased risks of adverse (hazardous, inattentive, and sleep-related) driving events in shift workers commuting to and from night shift work.With the demand for a 24 hour society comes the likely increase in adverse occupational health and safety outcomes. This dissertation has demonstrated the accuracy and potential utility of oculometrics (specifically JDS, PosAVR, BTD, %TEC) to assess sleepiness in healthy participants, and the shift working population. It has further demonstrated the application of oculometrics in identifying performance impairment as a result of sleepiness and circadian misalignment. The dissertation presents the scientific basis for the future utilisation of oculometrics in field in the prevention of sleepiness-related MVCs, and as a measure in intervention trials, particularly in the high-risk shift working population.
Book Synopsis Literature Review on Health and Fatigue Issues Associated with Commercial Motor Vehicle Driver Hours of Work by :
Download or read book Literature Review on Health and Fatigue Issues Associated with Commercial Motor Vehicle Driver Hours of Work written by and published by Transportation Research Board. This book was released on 2005 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Synthesis 9: Literature Review on Health and Fatigue Issues Associated with Commercial Motor Vehicle Driver Hours of Work examines literature relevant to health and fatigue issues associated with commercial vehicle driver hours of service. This literature review was specifically requested by the Federal Motor Carrier Safety Administration (FMCSA) to provide information related to its Hours of Service regulations issued in January 2004. The report contains a general literature review of the health issues from 1975 to the present, and fatigue issues from January 2004 to present, associated with commercial vehicle driver hours of service. The report also contains a literature review of references that were cited in response to a related FMCSA January 2005 Notice of Proposed Rulemaking. Strictly a literature review, the report does not contain any conclusions or recommendations.
Book Synopsis Diagnostic Tools for Identifying Sleepy Drivers in the Field by : Matthew Rizzo
Download or read book Diagnostic Tools for Identifying Sleepy Drivers in the Field written by Matthew Rizzo and published by . This book was released on 2013 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overarching goal of this project was to identify and evaluate cognitive and behavioral indices that are sensitive to sleep deprivation and may help identify commercial motor vehicle drivers (CMV) who are at-risk for driving in a sleep deprived state and may prove useful in field tests administered by officers. To that end, we evaluated indices of driver physiognomy (e.g., yawning, droopy eyelids, etc.) and driver behavioral/cognitive state (e.g. distracted driving) and the sensitivity of these indices to objective measures of sleep deprivation. The measures of sleep deprivation were sampled on repeated occasions over a period of 3.5-months in each of 44 drivers diagnosed with Obstructive Sleep Apnea (OSA) and 22 controls (matched for gender, age within 5 years, education within 2 years, and county of residence for rural vs. urban driving). Comprehensive analyses showed that specific dimensions of driver physiognomy associated with sleepiness in previous research and face-valid composite scores of sleepiness did not: 1) distinguish participants with OSA from matched controls; 2) distinguish participants before and after PAP treatment including those who were compliant with their treatment; 3) predict levels of sleep deprivation acquired objectively from actigraphy watches, not even among those chronically sleep deprived. Those findings are consistent with large individual differences in driver physiognomy. In other words, when individuals were sleep deprived as confirmed by actigraphy watch output they did not show consistently reliable behavioral markers of being sleep deprived. This finding held whether each driver was compared to him/herself with adequate and inadequate sleep, and even among chronically sleep deprived drivers. The scientific evidence from this research study does not support the use of driver physiognomy as a valid measure of sleep deprivation or as a basis to judge whether a CMV driver is too fatigued to drive, as on the current Fatigued Driving Evaluation Checklist. Fair and accurate determinations of CMV driver sleepiness in the field will likely require further research on alternative strategies that make use of a combination of information sources besides driver physiognomy, including work logs, actigraphy, in vehicle data recordings, GPS data on vehicle use, and performance tests.
Book Synopsis Subjective and Objective Measures of Fatigue when Driving by : Laurence Hartley
Download or read book Subjective and Objective Measures of Fatigue when Driving written by Laurence Hartley and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sleepiness written by Michael J. Thorpy and published by Cambridge University Press. This book was released on 2011-01-27 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written and edited by leading clinicians and researchers in sleep medicine, this is the first book to focus on the causes, consequences and treatment of disorders of excessive sleepiness. Extensive coverage is provided for all known causes of sleepiness, including sleep deprivation, obstructive sleep apnea syndrome, narcolepsy and other hypersomnias of central origin, shift work, and medical and psychiatric disorders. Since many causes of sleepiness are difficult to differentiate from each other, and treatment modalities can vary greatly from one disorder to another, this book helps the clinician to formulate a differential diagnosis that will ultimately lead to the correct diagnosis. Epidemiology, evaluation of the sleepy patient, diagnostic investigations including neuroimaging, subjective and objective testing, cognitive effects of sleepiness, motor vehicle driving issues, medico-legal aspects of sleepiness, and therapy are also discussed in detail. This is an essential resource for neurologists, psychiatrists and sleep specialists.
Book Synopsis Resident Duty Hours by : Institute of Medicine
Download or read book Resident Duty Hours written by Institute of Medicine and published by National Academies Press. This book was released on 2009-04-27 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical residents in hospitals are often required to be on duty for long hours. In 2003 the organization overseeing graduate medical education adopted common program requirements to restrict resident workweeks, including limits to an average of 80 hours over 4 weeks and the longest consecutive period of work to 30 hours in order to protect patients and residents from unsafe conditions resulting from excessive fatigue. Resident Duty Hours provides a timely examination of how those requirements were implemented and their impact on safety, education, and the training institutions. An in-depth review of the evidence on sleep and human performance indicated a need to increase opportunities for sleep during residency training to prevent acute and chronic sleep deprivation and minimize the risk of fatigue-related errors. In addition to recommending opportunities for on-duty sleep during long duty periods and breaks for sleep of appropriate lengths between work periods, the committee also recommends enhancements of supervision, appropriate workload, and changes in the work environment to improve conditions for safety and learning. All residents, medical educators, those involved with academic training institutions, specialty societies, professional groups, and consumer/patient safety organizations will find this book useful to advocate for an improved culture of safety.
Book Synopsis Driver Fatigue by : Narelle L. Haworth
Download or read book Driver Fatigue written by Narelle L. Haworth and published by . This book was released on 1988 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report addresses the topic of driver fatigue, an issue which is receiving increasing attention in the road safety field. A range of subject areas is reviewed in detail, including concepts and theories directly related to fatigue, the measurement of fatigue, factors contributing to the onset and development of fatigue, the degree to which fatigue is associated with road crashes, countermeasures having potential for offsetting the degrading effects of fatigue on safety, and an identification of research issues having promise for reducing the role of fatigue in crashes. accidents, fatigue, driver behaviour, boredom, stress, exhaustion, alcohol, drugs, sleep deprivation, fatality, sleep disorder, reaction time, physiological changes, noise, monotony, predictability, accident, tests, injury, stimulants, caffeine, amphetamines, nicotine.Road accidents. Countermeasures.
Book Synopsis Sleep Deprivation Countermeasures for Motorist Safety by : Jane C. Stutts
Download or read book Sleep Deprivation Countermeasures for Motorist Safety written by Jane C. Stutts and published by Transportation Research Board. This book was released on 2000 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concludes that although adequate sleep is the only 100 percent effective "countermeasure" for sleepiness, there are other countermeasures to help make driving safer. Several of the key countermeasures include: education of high-risk populations, the general driving public, and other key groups, such as law enforcement personnel, new technologies to detect and warn drowsy drivers, roadway countermeasures such as continuous shoulder rumble strips and other roadway treatments, increased use of rest areas, regulatory and judicial action.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309392551 Total Pages :273 pages Book Rating :4.3/5 (93 download)
Book Synopsis Commercial Motor Vehicle Driver Fatigue, Long-Term Health, and Highway Safety by : National Academies of Sciences, Engineering, and Medicine
Download or read book Commercial Motor Vehicle Driver Fatigue, Long-Term Health, and Highway Safety written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-08-12 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are approximately 4,000 fatalities in crashes involving trucks and buses in the United States each year. Though estimates are wide-ranging, possibly 10 to 20 percent of these crashes might have involved fatigued drivers. The stresses associated with their particular jobs (irregular schedules, etc.) and the lifestyle that many truck and bus drivers lead, puts them at substantial risk for insufficient sleep and for developing short- and long-term health problems. Commercial Motor Vehicle Driver Fatigue, Long-Term Health and Highway Safety assesses the state of knowledge about the relationship of such factors as hours of driving, hours on duty, and periods of rest to the fatigue experienced by truck and bus drivers while driving and the implications for the safe operation of their vehicles. This report evaluates the relationship of these factors to drivers' health over the longer term, and identifies improvements in data and research methods that can lead to better understanding in both areas.
Book Synopsis U.S./Canada Study of Commercial Motor Vehicle Driver Fatigue and Alertness by :
Download or read book U.S./Canada Study of Commercial Motor Vehicle Driver Fatigue and Alertness written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Commercial Motor Vehicle (CMV) Driver Fatigue and Alertness Study was the largest and most comprehensive over-the-road study of its kind ever conducted in North America. Its primary purposes were to establish measurable relationships between CMV driver activities and physiological and psychological indicators of fatigue and reduced alertness and to provide a scientifically valid basis to determine the potential for revisiting the 60-year-old hours-of-service regulations. A number of work-related factors thought to influence the development of fatigue, loss of alertness and degraded performance in CMV drivers was studied within an operational setting of real-life, revenue-generating trips. These included: the amount of time spent driving during a work period; the number of consecutive days of driving; the time of day when driving took place; and schedule regularity. It was found that the strongest and most consistent factor influencing driver fatigue and alertness was time-of-day; drowsiness, as observed in video recordings of the driver's face, was markedly greater during night driving than during daytime driving. The number of hours of driving (time-on-task) was not a strong or consistent predictor of observed fatigue. Other study findings noted that the number of driving periods was not a strong or consistent fatigue predictor; that there was a low correlation between drivers' subjective self-ratings of alertness/sleepiness and concurrent objective performance measures; and that there was a large difference between the mount of sleep drivers reported as their ideal and the amount they obtained during principal sleep periods in the study setting. While there is no single solution to the fatigue problem, much can be done to address driver fatigue through a combination of innovative hours-of-service regulation and enforcement, education, driver work scheduling, innovative fatigue management programs, driver screening, fitness for duty and alertness monitoring systems, and additional research. For the covering abstract of this conference see IRRD number 872978.
Book Synopsis Final Report on the Portable Computerized Assessments of Sleepy Drivers in Operational Environments by : Matthew Rizzo (MD)
Download or read book Final Report on the Portable Computerized Assessments of Sleepy Drivers in Operational Environments written by Matthew Rizzo (MD) and published by . This book was released on 2011 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excessive daytime sleepiness underpins a large number of the reported motor vehicle crashes. Fair and accurate field measures are needed to identify at-risk drivers who have been identified as potentially driving in a sleep deprived state on the basis of erratic driving behavior. The purpose of this research study was to evaluate a set of cognitive tests that can assist Motor Vehicle Enforcement Officers on duty in identifying drivers who may be engaged in sleep impaired driving. Currently no gold standard test exists to judge sleepiness in the field. Previous research has shown that Psychomotor Vigilance Task (PVT) is sensitive to sleep deprivation. The first goal of the current study was to evaluate whether computerized tests of attention and memory, more brief than PVT, would be as sensitive to sleepiness effects. The second goal of the study was to evaluate whether objective and subjective indices of acute and cumulative sleepiness predicted cognitive performance. Findings showed that sleepiness effects were detected in three out of six tasks. Furthermore, PVT was the only task that showed a consistent slowing of both 'best,' i.e. minimum, and 'typical' responses, median RT due to sleepiness. However, PVT failed to show significant associations with objective measures of sleep deprivation (number of hours awake). The findings indicate that sleepiness tests in the field have significant limitations. The findings clearly show that it will not be possible to set absolute performance thresholds to identify sleep-impaired drivers based on cognitive performance on any test. Cooperation with industry to adjust work and rest cycles, and incentives to comply with those regulations will be critical components of a broad policy to prevent sleepy truck drivers from getting on the road.
Book Synopsis Commercial Motor Vehicle Driver Fatigue and Alertness Study by : C. D. Wylie
Download or read book Commercial Motor Vehicle Driver Fatigue and Alertness Study written by C. D. Wylie and published by . This book was released on 1996 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting Fatigue and Sleepiness with Subjective and Objective Measures Relating to Primary Sleep Disorders by : Stephanie A. Spohr
Download or read book Predicting Fatigue and Sleepiness with Subjective and Objective Measures Relating to Primary Sleep Disorders written by Stephanie A. Spohr and published by . This book was released on 2012 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
