| A Laboratory Comparison of Clockwise and Counter-Clockwise Rapidly Rotating Shift Schedules, Part III: Effects on Core Body Temperature and Neuroendocrine Measures |
NOV 2002 |
20 pages |
| Authors:
Albert Boquet; Crystal E. Cruz; Thomas E. Nesthus; Cristy A. Detwiler; William R. Knecht; Kali A. Holcomb; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
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 | Most researchers suggest that shift rotation in a forward or clockwise direction produces less disruption of circadian rhythms than those that rotate in a backward or counter-clockwise direction. This is based upon extrapolation from quasi-experimental studies of shift-workers and research on the effects of jet lag, which indicate that westward travel results in less disruption of circadian rhythms. The effect of direction of rotation on cortisol, melatonin, and core body ... |
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| A Laboratory Comparison of Clockwise and Counter-Clockwise Rapidly Rotating Shift Schedules, Part II: Performance |
JUL 2002 |
33 pages |
| Authors:
Crystal E. Cruz; Albert Boquet; Cristy Detwiler; Thomas E. Nesthus; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
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| Many Air Traffic Control Specialists (ATCSs) work a relatively unique counter-clockwise, rapidly rotating shift schedule. Although arguments against these kinds of schedules are prevalent in the literature, few studies have examined rotating shifts such as those seen with ATCSs. The present study directly compared clockwise and counter-clockwise rapidly rotating shiftwork schedules on measures of complex task performance from the Multiple Task Performance Battery (MTPB) and vigilance from the Bakan Vigilance ... |
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| Effects of Antihistamine, Age, And Gender on Task Performance |
JUL 1999 |
72 pages |
| Authors:
Kirby Gilliland; Robert E. Schlegel; Thomas E. Nesthus; OKLAHOMA UNIV NORMAN DEPT OF PSYCHOLOGY
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| This investigation was designed to study the effects of the antihistamine, chlorpheniramine maleate, as well as the influence of age and gender, singly and in combination with chlorpheniramine maleate, on selected types of performance tasks. It was hypothesized that chiorpheniramine maleate would have a negative effect on a wide range of task performance and self report measures of mood and performance capability. Increasing age was hypothesized to have a negative ... |
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| Workshift and Antihistamine Effects on Task Performance |
DEC 1997 |
100 pages |
| Authors:
Kirby Gilliland; Robert E. Schlegel; Thomas E. Nesthus; OKLAHOMA UNIV NORMAN SCHOOL OF INDUSTRIAL ENGINEERING
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| Sixteen male subjects, well trained on a battery of cognitive performance assessment tasks, participated in a study to Investigate the effects on human operator performance of work shift (Day Shift vs. Mid shift), a specific antihistamine drug (4 mg of ChlorTrimeton(registered) brand chlorpheniramine maleate), and time on task accompanying three successive drug doses spaced every four hours. Five performance tasks, two work sample tasks, and ... |
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| Effects of Mild Hypoxia on Pilot Performances at General Aviation Altitudes |
APR 97 |
43 pages |
| Authors:
Thomas E. Nesthus; Ladonna L. Rush; Steven S. Wreggit; FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE
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| General aviation pilots may fly continuously at altitudes up to 12, 500 ft. without the use of supplemental oxygen. However, hypoxia is a condition that can develop at altitudes under 12,500 ft. Research has shown highly variable tolerance and performance of individuals during low altitude laboratory exposures with simple and complex tasking. This study evaluated the physiological and subjective responses, as well as the simulated flight performance of general aviation ... |
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| Effects of Simulated General Aviation Altitude Hypoxia on Smokers and Nonsmokers |
MAR 97 |
63 pages |
| Authors:
Thomas E. Nesthus; Robert P. Garner; Scott H. Mills; Robert A. Wise; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
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| General aviation pilots are permitted to fly without the use of supplemental oxygen up to an altitude of 12,500 ft. However, hypoxia occurs at altitudes under 12,500 ft. Personal lifestyle, physical conditioning, and illness can interact with hypoxia to affect performance. This study evaluated physiological and cognitive performance of smokers and nonsmokers during sessions of mild hypoxia. Nine male smokers and 9 nonsmokers performed the Multi-Attribute Task Battery (MATB) while ... |
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| A Longevity and Survival Analysis for a Cohort of Retired Airline Pilots |
FEB 95 |
15 pages |
| Authors:
Robert O. Besco; Satya P. Sangal; Thomas E. Nesthus; Stephen J. Veronneau; FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE
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| There is a popular belief in the aviation industry that retired pilots die at a younger age than the general population. If this belief is in fact, correct, research into the factors or events precipitating an early mortality among retired airline crew members could be of interest to the FAA. Few studies have addressed the question Do retired airline pilots die at a younger age than their 60 year-old counterparts ... |
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| Some Performance Effects of Age and Low Blood Alcohol Levels on a Computerized Neuropsychological Test |
FEB 95 |
38 pages |
| Authors:
David J. Schroder; Howard C. Harris Jr.; William E. Collins; Thomas E. Nesthus; FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE
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| COGSCREEN is a computerized test battery developed for the Federal Aviation Administration as an airman neuropsychological screening instrument for cognitive functioning. This study explored a multifaceted application of the sensitivity of the battery to potential differences in performance capabilities, current civil aviation interest in the performance effects of low levels of blood alcohol, and the potential significance of age on cognitive performance. Nine of 11 basic COGSCREEN tests were used ... |
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| Comparative Effects of Antihistamines on Aircrew Performance of Simple and Complex Tasks Under Sustained Operations |
DEC 91 |
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| Authors:
Thomas E. Nesthus; Samuel G. Schiflett; Douglas R. Eddy; Jeffrey N. Whitmore; KRUG LIFE SCIENCES SAN ANTONIO TX SAN ANTONIO DIV
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 | Airborne Warning and Control System (AWACS) Weapons Director (WD) cognitive and psychomotor skills were evaluated with terfenadine (Seldane) and diphenhydramine (Benadryl) using a performance assessment battery (PAB). After nondrug Day 1 training, twelve 3 member teams were tested with Placebo on Day 2, then randomly assigned to Seldane (60 mg/12h TID), Benadryl (25 mg/4h QID), or Placebo groups on Days 3 and 4. An 8-test PAB was given at 1230 ... |
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| Aircrew Life Support Systems Enhancement |
FEB 90 |
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| Authors:
Robert W. Krutz Jr.; Thomas E. Nesthus; William R. Scott; James T. Webb; Cherie J. Noles; KRUG INTERNATIONAL SAN ANTONIO TX TECHNOLOGY SERVICES DIV
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| This final report is a summary of the contract objectives and accomplishments; it includes a complete bibliography of reports generated for the Crew Technology Division. The scientific, engineering, and technical team from KRUG International provided support in accordance with task assignments developed from the statement of work as summarized in each of the 11 areas discussed in this report. Each summary is followed by a review of the accomplishments with ... |
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