scholarly journals Evaluation of the Combined Effects of Heat and Lighting on the Level of Attention and Reaction Time: Climate Chamber Experiments in Iran

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Zohreh Mohebian ◽  
Somayeh Farhang Dehghan ◽  
Habiballah Dehghan
Keyword(s):  
Reaction Time ◽  
Performance Test ◽  
Heat Exposure ◽  
Reaction Times ◽  
Continuous Performance Test ◽  
Commission Error ◽  
Continuous Performance ◽  
Selective Reaction ◽  
Time Test ◽  
Reaction Time Test

Heat exposure and unsuitable lighting are two physical hazardous agents in many workplaces for which there are some evidences regarding their mental effects. The purpose of this study was to assess the combined effect of heat exposure and different lighting levels on the attention rate and reaction time in a climatic chamber. This study was conducted on 33 healthy students (17 M/16 F) with a mean (±SD) age of22.1±2.3years. The attention and reaction time test were done by continuous performance test and the RT meter, respectively, in different exposure conditions including the dry temperatures (22°C and 37°C) and lighting levels (200, 500, and 1500 lux). Findings demonstrated that increase in heat and lighting level caused a decrease in average attention percentage and correct responses and increase in commission error, omission error, and response time (P<0.05). The average of simple, diagnostic, two-color selective, and two-sound selective reaction times increased after combined exposure to heat and lighting (P<0.05). The results of this study indicated that, in job task which requires using cognitive functions like attention, vigilance, concentration, cautiousness, and reaction time, the work environment must be optimized in terms of heat and lighting level.

Alcohol Increases Commission Error Rates for a Continuous Performance Test

1999 ◽  
Vol 23 (8) ◽  
pp. 1342-1351 ◽  
Author(s):  
Donald M. Dougherty ◽  
F. Gerard Moeller ◽  
Joel L. Steinberg ◽  
Dawn M. Marsh ◽  
Stella E. Hines ◽  
...  
Keyword(s):  
Performance Test ◽  
Continuous Performance Test ◽  
Error Rates ◽  
Commission Error ◽  
Continuous Performance

scholarly journals Comparison of Mind Control Techniques: An Assessment of Reaction Times

2016 ◽  
Vol 15 (4) ◽  
pp. 596-600
Author(s):  
Varun Malhotra ◽  
Neera Goel ◽  
Usha Dhar ◽  
Rinku Garg ◽  
Yogish Tripathi
Keyword(s):  
Reaction Time ◽  
Single Point ◽  
Medical Science ◽  
Reaction Times ◽  
Devotional Music ◽  
Mind Control ◽  
Visual Reaction ◽  
Time Test ◽  
The Mind ◽  
Reaction Time Test

Background: Every activity requires a certain amount of concentration and no effective action may be performed without deep concentration. Businessman or artists or students in school must know the art of focusing all powers of attention on a single point in order to succeed in their respective vocation.Methods: We wanted to find the best technique to increase the concentration scientifically. We thus, endeavored to study and compare the reaction times in maneuvers of anuloma viloma pranayama, kapalbhatti pranayama, gayatri chanting and exercise. Reaction time test was taken online before anuloma viloma pranayama, kapalbhatti pranayama, gayatri chanting and exercise and compared after.Results: Reaction times decreased significantly and was least during gayatri mantra. Concentration as seen by a decrease in visual reaction time denotes first a withdrawal of attention from objects of distraction and then focusing all attention upon one thing at a time. Just 30 minutes of physical activity each day offers substantial benefits to your health.Conclusions: Pranayama or devotional music chanting also decreases fatigue keeps the mind alert, and active.Bangladesh Journal of Medical Science Vol.15(4) 2016 p.596-600

Slowed reaction time during a continuous performance test in children with Tourette's syndrome.

1997 ◽  
Vol 11 (1) ◽  
pp. 147-155 ◽  
Author(s):  
David W. Shucard ◽  
Ralph H. B. Benedict ◽  
Ayda Tekok-Kilic ◽  
David G. Lichter
Keyword(s):  
Reaction Time ◽  
Performance Test ◽  
Continuous Performance Test ◽  
Tourette's Syndrome ◽  
Tourette’S Syndrome ◽  
Continuous Performance

Índice de desempeño para tareas de atención sostenida

2021 ◽  
Author(s):  
◽  
M. Francisco-Vicencio
Keyword(s):  
Computer Vision ◽  
Performance Test ◽  
Daily Life ◽  
Reaction Times ◽  
Continuous Performance Test ◽  
Continuous Performance ◽  
Behavioral Indicators ◽  
Evaluation Practice ◽  
Cognitive Evaluation ◽  
The Given

Through this work, we explore the idea of a translational attentional index that can be utilized in cognitive evaluation practice as well as in other areas in the biomedical space. With the increase of virtual assistants developed for in-house rehabilitation session monitoring – such as wearables and computer vision (CV) based AI assistants –, the standardization of an index based on behavioral indicators is imperative to give them the ability to monitor the users’ engagement level in the given task to procure a safety and effective execution. We begin by exploring the indicators of attention obtained from a Continuous Performance Test (CPT) – a standardized tool utilized in cognitive evaluation – where we detect shortcomings that cannot be translated to daily life scenarios where this index is intended to be used. We propose then an index that is computed based on common indicators that can be found in daily tasks (Correct Responses and Reaction Times) by weighting their contributions equally and bidirectionally penalizing variability on responses recorded. We close with presenting the information the new index can group from common indicators and that can be easily interpreted in a quick sight by different professionals in the biomedical space compared with the typical analysis of attentional levels obtained from a CPT.

scholarly journals A Model to Predict Children’s Reaction Time at Signalized Intersections

Safety ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 22 ◽  
Author(s):  
Irena Ištoka Otković
Keyword(s):  
Neural Network ◽  
Reaction Time ◽  
Correlation Coefficient ◽  
Reaction Times ◽  
Signalized Intersections ◽  
Traffic Conditions ◽  
Road Users ◽  
Time Test ◽  
Reaction Time Test ◽  
Real Traffic

Traffic accident statistics in urban areas, both locally in Croatia and at the European level, identify children as a group of vulnerable road users. The analysis of the parameters that influence the interaction of child pedestrians and other road users requires special attention. This paper presents the results of research about the reaction time of children, measured both in laboratory conditions, via a computer reaction time test, and in actual traffic conditions. The results of the reaction time test in a situation with expected stimuli (a computer test) of children aged 6 to 10 years were compared with the results of the reaction time of adult traffic participants, drivers, who also took part in the computer test. Standard deviations of the reaction times between the control group (drivers, adults) and each subgroup of children were significantly different (p < 0.05). The results suggest that the largest developmental jump occurs between preschool children and first-grade children. In actual traffic conditions, the reaction time of children aged 4 to 16 years at the signalized intersection was measured. The model for predicting the reaction time of children in real traffic conditions was created using a neural network. The model prediction results matched well with the values measured in actual traffic conditions, for the observed intersection (correlation coefficient is 94.56%) and for the validation intersection (correlation coefficient is 92.29%). Parameters influencing children’s reaction times in real traffic conditions were identified by applying both statistical analysis and the neural network model developed. Using both methods, the same key distractors were identified—the movement of children in the group and the use of mobile phones. The case study was conducted at selected signalized intersections in the city of Osijek, Croatia.

Open-source open-access reaction time test (OORTT): an easy tool to assess reaction times

2020 ◽  
Author(s):  
Mattia Rigoli ◽  
Alessio Facchin ◽  
Davide Cardile ◽  
Nicoletta Beschin ◽  
Claudio Luzzatti
Keyword(s):  
Reaction Time ◽  
Open Access ◽  
Open Source ◽  
Reaction Times ◽  
Time Test ◽  
Reaction Time Test

scholarly journals Effects of Protective American Football Headgear on Peripheral Vision Reaction Time and Visual Target Detection in Division I NCAA Football Players

Sports ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 213
Author(s):  
Rachel A. Miller ◽  
Rebecca R. Rogers ◽  
Tyler D. Williams ◽  
Mallory R. Marshall ◽  
Justin R. Moody ◽  
...  
Keyword(s):  
Reaction Time ◽  
Target Detection ◽  
Peripheral Vision ◽  
Visual Target ◽  
Reaction Times ◽  
American Football ◽  
Division I ◽  
Football Players ◽  
Time Test ◽  
Reaction Time Test

The purpose of this study was to examine the effects of protective football headgear on peripheral vision reaction time and visual target detection. Twenty-five Division I NCAA football players (age = 20.5 yrs ± 0.9, height = 185.9 cm ± 6.8, body mass = 99.2 kg ± 19.2, BMI = 29.6 ± 4.5) participated. In a crossover counterbalanced study design, subjects participated in one visit with three conditions: Baseline (BL) without headgear, helmet only (HO), helmet with an eye shield (HE). Subjects completed a 1-min peripheral vision reaction time test for each condition separated by 3-min recovery periods. Tests were administered using a 64 light Dynavision D2 Visuomotor board. Target detection (total hit score) was higher during BL than HO (p < 0.001) and HE (p < 0.001). Average (p < 0.001), peak (p < 0.001), minimum (p < 0.001), and median (p < 0.001) peripheral reaction times were faster during BL than HO and HE. No significant differences were observed for any measures between HO and HE conditions (p > 0.05). Findings indicate that protective football headgear impaired reaction time to peripheral visual stimuli. The addition of an eye shield to the helmet had a small non-significant effect on reaction time and target detection. These results may hold important implications in helmet design and player safety.

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