Cognitive Performance During Long-Duration Vibration

1982 ◽  
Author(s):  
Richard W. Shoenberger ◽  
C. S. Harris
Keyword(s):  
Cognitive Performance ◽  
Long Duration

Effects of Fatigue on Cognitive Performance in Long-Duration Simulated Flight Missions

2020 ◽  
Vol 10 (2) ◽  
pp. 82-93
Author(s):  
Eduardo Rosa ◽  
Ola Eiken ◽  
Mikael Grönkvist ◽  
Roger Kölegård ◽  
Nicklas Dahlström ◽  
...  
Keyword(s):  
Executive Functions ◽  
Task Performance ◽  
Cognitive Performance ◽  
Cognitive Tasks ◽  
Fatigue Index ◽  
Fighter Aircraft ◽  
Long Duration ◽  
Metacognitive Accuracy

Abstract. Fighter pilots may be exposed to extended flight missions. Consequently, there is increasing concern about fatigue. We investigated the effects of fatigue and cognitive performance in a simulated 11-hr mission in the 39 Gripen fighter aircraft. Five cognitive tasks were used to assess cognitive performance. Fatigue was measured with the Samn–Perelli Fatigue Index. Results showed that performance in the non-executive task degraded after approximately 7 hr. Fatigue ratings showed a matching trend to the performance in this task. Performance in tasks taxing executive functions did not decline. We interpreted that fatigue can be overridden by increased attentional effort for executive tasks but not for non-executive components of cognition. Participants underestimated their performance and metacognitive accuracy was not influenced by fatigue.

scholarly journals Cognitive performance, fatigue, emotional and physiological strains in simulated long-duration flight missions

2022 ◽  
pp. 1-13
Author(s):  
Eduardo Rosa ◽  
Eugene Lyskov ◽  
Mikael Grönkvist ◽  
Roger Kölegård ◽  
Nicklas Dahlström ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Long Duration

scholarly journals Fatigue, Emotion, and Cognitive Performance in Simulated Long-Duration, Single-Piloted Flight Missions

2021 ◽  
Vol 92 (9) ◽  
pp. 710-719
Author(s):  
Eduardo Rosa ◽  
Mikael Gronkvist ◽  
Roger Kolegard ◽  
Nicklas Dahlstrom ◽  
Igor Knez ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Air Force ◽  
Cognitive Tasks ◽  
Emotional States ◽  
Fatigue Index ◽  
Fighter Aircraft ◽  
Mission Duration ◽  
Fatigue Development ◽  
Long Duration ◽  
Negative Emotional State

BACKGROUND: Fatigue of air force pilots has become an increasing concern due to changes in mission characteristics. In the current study we investigated fatigue, emotions, and cognitive performance in a simulated 11-h mission in the 39 Gripen fighter aircraft. METHODS: A total of 12 subjects were evaluated in a high-fidelity dynamic flight simulator for 12 consecutive hours. Perceived fatigue was measured by the Samn-Perelli Fatigue Index (SPFI). Emotions were assessed with the Circumplex Affect Space. Cognitive performance was assessed by five cognitive tasks. RESULTS: Significant increase in self-reported fatigue, general decrease in two positive emotional states, as well increase of one negative emotional state occurred after approximately 7 h into the mission. Self-reported fatigue negatively correlated with enthusiasm and cheerfulness (r 0.75; 0.49, respectively) and positively correlated with boredom and gloominess (r 0.61; r 0.30, respectively). Response time in the low-order task negatively correlated with enthusiasm, cheerfulness and calmness (r 0.44; r 0.41; r 0.37, respectively) and positively correlated with boredom and anxiousness (r 0.37; r 0.28, respectively). Mission duration had an adverse impact on emotions in these environmental conditions, particularly after 7 h. DISCUSSION: These results contribute to the understanding of fatigue development in general and of emotion-cognition relationships. These findings emphasize that both emotional states and the type of cognitive tasks to be performed should be considered for planning long-duration missions in single-piloted fighter aircrafts as to increase the probability of missions success. Rosa E, Gronkvist M, Kolegard R, Dahlstrom N, Knez I, Ljung R, Willander J. Fatigue, emotion, and cognitive performance in simulated long-duration, single-piloted flight missions. Aerosp Med Hum Perform. 2021; 92(9):710719.

scholarly journals The Effect of Meditation on Concentration Level and Cognitive Performance

2018 ◽  
Vol 11 (1) ◽  
pp. 134
Author(s):  
Runnan Zhang
Keyword(s):  
Cognitive Performance ◽  
Test Performance ◽  
Concentration Level ◽  
Positive Impact ◽  
Future Research ◽  
Control Group ◽  
Long Duration ◽  
Meditation Experience ◽  
Research Studies

Many research studies have found that long-duration meditation sessions – ones that last at least 40 minutes a day – can contribute to individuals’ concentration and cognitive performance. However, the effects of comparatively brief meditation sessions have not been widely studied. In this study, we tested whether a short meditation session affects cognitive performance and concentration when compared to a control group. Participants with no prior meditation experience underwent a short meditation session lasting 10 minutes, and then completed a section of either the reading or math portion of the SAT. We find no evidence that the short meditation session improves test performance, but subjective feedback from the participants suggests that meditation has a positive impact on their concentration level. The implications of this study and possibilities for future research on the topic will be discussed further.

A Study of the Effects of Repeated 36-Hour Simulated Missions on B-1B Aircrew Members

1994 ◽  
Vol 38 (1) ◽  
pp. 51-55 ◽  
Author(s):  
Kelly J. Neville ◽  
Roger U. Bisson ◽  
Jonathan French ◽  
Johnnie Martinez ◽  
William F. Storm
Keyword(s):  
Cognitive Performance ◽  
Long Range ◽  
Research Effort ◽  
Early Morning ◽  
Multiple Data ◽  
Long Duration ◽  
Global Power ◽  
Sleep Management ◽  
Expert Ratings ◽  
The Military

The military goal of Global Reach - Global Power entails an unprecedented dependence on immediate and sustained long range bombing campaigns. This research effort was initiated to evaluate the feasibility of this type of long range operation by studying the effects of multiple long duration missions on bomber aircrews. Measures of cognitive performance, mood, fatigue, and sleep management suggest that crews learned to adapt to the missions. However, cognitive performance deteriorated during the early morning hours of each mission and expert ratings of flight deck performance suggest that some components of performance may have been negatively impacted by the repeated missions. This research contributes to the base of information that may be used to make operational risk decisions and suggests ways to reduce schedule-related risks. It also explores the effects of sustained operations on complex tasks, as well as on simple tasks, and explores the use of multiple data collection techniques in a non-laboratory setting.

The LDE-Type Flare Occurrence (1969-1993)

1994 ◽  
Vol 144 ◽  
pp. 279-282
Author(s):  
A. Antalová
Keyword(s):  
Time Series ◽  
Fourier Analysis ◽  
Sunspot Cycle ◽  
List Type ◽  
Type Number ◽  
Solar Cycles ◽  
Type Iv ◽  
Long Duration ◽  
Cycle Maximum ◽  
Flare Index

AbstractThe occurrence of LDE-type flares in the last three cycles has been investigated. The Fourier analysis spectrum was calculated for the time series of the LDE-type flare occurrence during the 20-th, the 21-st and the rising part of the 22-nd cycle. LDE-type flares (Long Duration Events in SXR) are associated with the interplanetary protons (SEP and STIP as well), energized coronal archs and radio type IV emission. Generally, in all the cycles considered, LDE-type flares mainly originated during a 6-year interval of the respective cycle (2 years before and 4 years after the sunspot cycle maximum). The following significant periodicities were found:• in the 20-th cycle: 1.4, 2.1, 2.9, 4.0, 10.7 and 54.2 of month,• in the 21-st cycle: 1.2, 1.6, 2.8, 4.9, 7.8 and 44.5 of month,• in the 22-nd cycle, till March 1992: 1.4, 1.8, 2.4, 7.2, 8.7, 11.8 and 29.1 of month,• in all interval (1969-1992):a)the longer periodicities: 232.1, 121.1 (the dominant at 10.1 of year), 80.7, 61.9 and 25.6 of month,b)the shorter periodicities: 4.7, 5.0, 6.8, 7.9, 9.1, 15.8 and 20.4 of month.Fourier analysis of the LDE-type flare index (FI) yields significant peaks at 2.3 - 2.9 months and 4.2 - 4.9 months. These short periodicities correspond remarkably in the all three last solar cycles. The larger periodicities are different in respective cycles.

Thimerosal Not Linked to Cognitive Performance

2007 ◽  
Vol 3 (10) ◽  
pp. 2
Author(s):  
ELIZABETH MECHCATIE
Keyword(s):  
Cognitive Performance

Effects of a Group Program to Increase Cognitive Performance Through Cognitively Stimulating Leisure Activities in Healthy Older Subjects

GeroPsych ◽  
2011 ◽  
Vol 24 (2) ◽  
pp. 83-92 ◽  
Author(s):  
Valentina A. Tesky ◽  
Christian Thiel ◽  
Winfried Banzer ◽  
Johannes Pantel
Keyword(s):  
Cognitive Function ◽  
Cognitive Performance ◽  
Older Persons ◽  
Intervention Program ◽  
Leisure Activities ◽  
The Elderly ◽  
Cognitive Stimulation ◽  
Group Program ◽  
Positive Effects ◽  
Older Subjects

To investigate the effects of leisure activities on cognitive performance of healthy older subjects, an innovative intervention program was developed. Frequent participation in cognitively stimulating activities (i.e., reading, playing chess, or playing music) is associated with reduced risk of dementia. AKTIVA (active cognitive stimulation – prevention in the elderly) is an intervention program designed to enhance cognitive stimulation in everyday life by increasing cognitive stimulating leisure activities. The present study determines the effects of AKTIVA on cognitive function, mood and attitude toward aging in a sample of older participants from the general population. Several measurement instruments were used including the Alzheimer’s Disease Assessment Scale (ADAS-Cog), the Trail-Making Test (TMT), and the Memory Complaint Questionnaire (MAC-Q). Initially, the sample consisted of 307 older persons (170 female, 72 ± 7 years). The intervention was evaluated with a randomized, controlled pre-post follow-up design. Participants were randomly assigned to one of three conditions: AKTIVA intervention (n = 126), AKTIVA intervention plus nutrition and exercise counseling (n = 84), no-intervention control group (n = 97). The AKTIVA intervention consisted of 8 weekly sessions and two booster sessions after a break of 4 months. Participation in the group program resulted in positive effects on cognitive function and attitude toward aging for subassembly groups. Older persons (≥ 75 years) showed enhanced speed of information processing (by TMT Version A) (F = 4.17*, p < .05); younger participants (< 75 years) showed an improvement in subjective memory decline (by MAC-Q) (F = 2.55*, p < .05). Additionally, AKTIVA enhanced the frequency of activities for leisure activities for subassembly groups. The results of this study suggest that the AKTIVA program can be used to increase cognitively stimulating leisure activities in the elderly. Further research is necessary to identify the long-term effects of this intervention particularly with respect to the prevention of dementia.

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