Cognitive Performance Change during a 6-Hour Hike at Low Temperature in Simulated Rain, at Controlled Walking Rates

1983 ◽  
Author(s):  
D. J. Hord ◽  
R. Thompson
Keyword(s):  
Low Temperature ◽  
Cognitive Performance ◽  
Performance Change ◽  
Simulated Rain

Tubular Daylighting Devices and People: A comparison of the human responses to Tubular Daylighting Devices and fluorescent lighting

2021 ◽  
Author(s):  
◽  
James Sullivan
Keyword(s):  
Cognitive Performance ◽  
Well Being ◽  
Performance Change ◽  
Performance Effects ◽  
Before And After ◽  
And Performance ◽  
The University ◽  
Fluorescent Lighting ◽  
Larger Sample ◽  
Before And After Study

<p>Tubular Daylighting Devices are used to bring daylight into deep-plan spaces, and meet sustainability goals. However, they are expensive, and justification for their use lies in hypothesised benefits they can provide in areas such as well-being and productivity. Yet, there is very little research into the effects of Tubular Daylighting Devices. The broader daylighting literature suggests that benefits to satisfaction, mood, and performance are possible — though research into the benefits of daylight is still not conclusive.  Therefore, a before and after study was carried out in a windowless computer room in the university to compare how the students responded under TDDs versus typical electric lighting. Their cognitive performance, change in mood, average sleepiness, and perceptions of the room and lighting were measured.  TDDs significantly increased ratings of room attractiveness and brightness, and had no more perceived glare than the electric lighting. Ratings of lighting quality were on a par with both typical electric lighting and good modern lighting. They were also just as effective on overcast days as sunny. No effects were found on performance or sleepiness, and mood results were inconclusive.  Overall, it is suggested that TDDs can be considered to be on a par with good modern lighting, and superior to typical existing lighting. Note, however, that it is possible that effects in rooms with windows could differ from those found here. Further research should use longer exposures and larger sample sizes if they wish to find performance effects.</p>

Environment and Bromoxynil Phytotoxicity

Weed Science ◽  
1986 ◽  
Vol 34 (1) ◽  
pp. 101-105 ◽  
Author(s):  
John D. Nalewaja ◽  
Grzegorz Skrzypczak
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Low Temperatures ◽  
Practical Importance ◽  
Amaranthus Retroflexus ◽  
Controlled Environment ◽  
Growth Stages ◽  
Redroot Pigweed ◽  
Wild Mustard ◽  
Simulated Rain

Experiments in controlled-environment chambers indicated that high temperature, 30 C, increased the phytotoxicity of bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) to wild mustard (Sinapis arvensisL. # SINAR) and redroot pigweed (Amaranthus retroflexusL. # AMARE) compared to low temperature, 10 C, during and after treatment. Bromoxynil phytotoxicity generally was higher at relative humidities of 90 to 95% compared to 40 to 60%, but relative humidity had less influence on bromoxynil phytotoxicity than did temperature. A simulated rain immediately after bromoxynil treatment reduced control of both species, but the reduction was of no practical importance for wild mustard. The data indicate that wild mustard and redroot pigweed control would be reduced by bromoxynil application during a period of low temperatures or to plants in advanced growth stages.

Neurocognitive functioning and cerebrovascular reactivity after carotid endarterectomy

Neurology ◽  
2017 ◽  
Vol 90 (4) ◽  
pp. e307-e315 ◽  
Author(s):  
Simona Lattanzi ◽  
Luciano Carbonari ◽  
Gabriele Pagliariccio ◽  
Marco Bartolini ◽  
Claudia Cagnetti ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Carotid Endarterectomy ◽  
Cognitive Performance ◽  
Carotid Artery Disease ◽  
Cerebral Hemodynamics ◽  
Cerebrovascular Reactivity ◽  
Performance Change ◽  
Complex Figure ◽  
Artery Disease ◽  
Ica Stenosis

ObjectiveTo evaluate in patients with TIA and ipsilateral high-grade internal carotid artery (ICA) stenosis whether changes in cognitive performance and cerebral hemodynamics occurred after carotid endarterectomy (CEA) and to explore their relationship.MethodsParticipants were patients who underwent CEA, had TIA within the last 6 months, and had an ipsilateral severe ICA stenosis. Coloured Progressive Matrices (CPM) plus Complex Figure Copy Test (CFCT) and phonemic (ph) plus categorical (ca) Verbal Fluency (VF) tests were performed to assess right and left hemisphere cognitive functions, respectively. Hemodynamics was assessed with transcranial Doppler ultrasonography by means of the cerebral vasomotor reactivity (CVR) to hypercapnia.ResultsA total of 137 patients were included. Before CEA, patients with right ICA obtained lower scores on the CPM and CFCT; patients with left ICA stenosis performed worse on the phonemic and categorical VF tests. The CVR was decreased on the side of the stenosis. At 6 months from CEA, CVR and cognitive performance were significantly improved. The performance change in cognitive tests exploring the revascularized hemisphere was positively associated with the ipsilateral CVR variation (CPM: R2 for linear regression = 0.759, adjR2 = 0.737; CFCT: R2 = 0.734, adjR2 = 0.710; (ph)VF: R2 = 0.774, adjR2 = 0.749; (ca)VF: R2 = 0.732, adjR2 = 0.703).ConclusionCognitive performance was enhanced at 6 months since CEA, and the improvement was related to the CVR increase. Cerebral hemodynamics may be an independent and potentially reversible determinant of cognitive dysfunction in severe carotid artery disease.

Effect of Long Flights on the Cognitive Performance of Air Crew

1997 ◽  
Vol 84 (1) ◽  
pp. 319-322 ◽  
Author(s):  
Helen C. Beh ◽  
Peter McLaughlin
Keyword(s):  
Cognitive Performance ◽  
Control Group ◽  
Performance Change ◽  
North East ◽  
The North ◽  
Time Zones ◽  
East And West ◽  
New Time

The cognitive performance of groups of subjects was tested after flights lasting between 7.5–9.5 hours to the north, east and west of Sydney ( ns = 10, 12, and 12) and compared with the performance of a ground-based control group ( n = 12). Analysis showed an impairment in performance of the flight groups following the flights. The analysis suggests that part of the performance change following transzonal flights may result from stress induced during the flight rather than adjustment to new time zones.

scholarly journals Fatigue and cognitive performance change in MS: multifactorial with disparate influences Short title: Predictors of fatigue and performance change in MS

2018 ◽  
Author(s):  
M Hu ◽  
N Muhlert ◽  
N Robertson ◽  
M Winter
Keyword(s):  
Cognitive Performance ◽  
Self Efficacy ◽  
Assessment Tools ◽  
Assessment Instrument ◽  
Self Report ◽  
Cognitive Factors ◽  
Fatigue Assessment ◽  
Performance Change ◽  
Subjective Fatigue ◽  
And Performance

AbstractBackgroundFatigue is a common and disabling symptom in Multiple Sclerosis (MS) with a variety of direct and indirect influences, but remains poorly understood. Performance-based and self-report measures of fatigue are only weakly correlated and may have independent predictors. We adopted a multifactorial approach, utilising a measure of concurrent cognitive performance change in order to examine the clinical, psychological, and cognitive factors influencing subjective and objective fatigue in MS.MethodsSixty-one people with MS were assessed. Subjective fatigue was measured using the Modified Fatigue Impact Scale, Fatigue Assessment Instrument, and a Visual Analogue Scale (VAS). The Conners Continuous Performance Test 3 (CCPT3) and VAS were administered before and after two hours of cognitive testing, representing a period of cognitive effort. The differences in scores formed measures of objective performance fatigue and subjective fatigue change, respectively. We examined differences across baseline fatigue, fatigue change and performance change classifications, using regression analysis to uncover predictors of subjective fatigue and performance change.Table 1.Demographic and clinical features of the sampleResultsDepression, sleep, and emotion-focused coping each predicted baseline fatigue and together explained 53.5% of variance. Increased subjective fatigue was linked with anxiety, lower self-efficacy and gender. Cognitive performance change on the CCPT3 was however predicted by estimated general cognitive ability, self-efficacy and post-intervention fatigue.ConclusionSubjective fatigue in MS is a multifactorial construct, with subjective and objective cognitive performance fatigue largely influenced by indirect psychological and cognitive factors. The varying factors driving subjective and objective fatigue suggest that future studies need to take into account these disparate aspects when developing fatigue assessment tools. Targeting influential fatigue drivers such as psychological variables, and even using gender specific interventions may have the potential to improve the burden of fatigue and quality of life of people with MS.

scholarly journals Tubular Daylighting Devices and People: A comparison of the human responses to Tubular Daylighting Devices and fluorescent lighting

2021 ◽  
Author(s):  
◽  
James Sullivan
Keyword(s):  
Cognitive Performance ◽  
Well Being ◽  
Performance Change ◽  
Performance Effects ◽  
Before And After ◽  
And Performance ◽  
The University ◽  
Fluorescent Lighting ◽  
Larger Sample ◽  
Before And After Study

<p>Tubular Daylighting Devices are used to bring daylight into deep-plan spaces, and meet sustainability goals. However, they are expensive, and justification for their use lies in hypothesised benefits they can provide in areas such as well-being and productivity. Yet, there is very little research into the effects of Tubular Daylighting Devices. The broader daylighting literature suggests that benefits to satisfaction, mood, and performance are possible — though research into the benefits of daylight is still not conclusive.  Therefore, a before and after study was carried out in a windowless computer room in the university to compare how the students responded under TDDs versus typical electric lighting. Their cognitive performance, change in mood, average sleepiness, and perceptions of the room and lighting were measured.  TDDs significantly increased ratings of room attractiveness and brightness, and had no more perceived glare than the electric lighting. Ratings of lighting quality were on a par with both typical electric lighting and good modern lighting. They were also just as effective on overcast days as sunny. No effects were found on performance or sleepiness, and mood results were inconclusive.  Overall, it is suggested that TDDs can be considered to be on a par with good modern lighting, and superior to typical existing lighting. Note, however, that it is possible that effects in rooms with windows could differ from those found here. Further research should use longer exposures and larger sample sizes if they wish to find performance effects.</p>

Tubular Daylighting Devices and People: A comparison of the human responses to Tubular Daylighting Devices and fluorescent lighting

2021 ◽  
Author(s):  
◽  
James Sullivan
Keyword(s):  
Cognitive Performance ◽  
Well Being ◽  
Performance Change ◽  
Performance Effects ◽  
Before And After ◽  
And Performance ◽  
The University ◽  
Fluorescent Lighting ◽  
Larger Sample ◽  
Before And After Study

<p>Tubular Daylighting Devices are used to bring daylight into deep-plan spaces, and meet sustainability goals. However, they are expensive, and justification for their use lies in hypothesised benefits they can provide in areas such as well-being and productivity. Yet, there is very little research into the effects of Tubular Daylighting Devices. The broader daylighting literature suggests that benefits to satisfaction, mood, and performance are possible — though research into the benefits of daylight is still not conclusive.  Therefore, a before and after study was carried out in a windowless computer room in the university to compare how the students responded under TDDs versus typical electric lighting. Their cognitive performance, change in mood, average sleepiness, and perceptions of the room and lighting were measured.  TDDs significantly increased ratings of room attractiveness and brightness, and had no more perceived glare than the electric lighting. Ratings of lighting quality were on a par with both typical electric lighting and good modern lighting. They were also just as effective on overcast days as sunny. No effects were found on performance or sleepiness, and mood results were inconclusive.  Overall, it is suggested that TDDs can be considered to be on a par with good modern lighting, and superior to typical existing lighting. Note, however, that it is possible that effects in rooms with windows could differ from those found here. Further research should use longer exposures and larger sample sizes if they wish to find performance effects.</p>

Cognitive performance change of pediatric patients after conducting frontal transcortical approach to treat lateral ventricular tumor

2017 ◽  
Vol 33 (12) ◽  
pp. 2099-2108 ◽  
Author(s):  
Wanchun Zhu ◽  
Jintao He ◽  
Xiang Li ◽  
Lei Wang ◽  
Zheng Lu ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Pediatric Patients ◽  
Performance Change ◽  
Transcortical Approach
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