Detection of Driver's Fight or Flight Reaction by Spatio-Temporal Spectrum Differential Analysis ofFacial Skin Thermogram

2010 ◽  
Vol 22 (1) ◽  
pp. 43-49
Author(s):  
Hirotoshi Asano ◽  
◽  
Hideto Ide
Keyword(s):  
Skin Temperature ◽  
Driving Simulator ◽  
Differential Analysis ◽  
Facial Skin ◽  
Car Accidents ◽  
Flight Reaction ◽  
Spatio Temporal ◽  
Car Accident ◽  
Biological Measurement ◽  
Fight Or Flight

Before a person has a car accident, he may have several “close calls.” These “close calls” may cause a person to experience tension and fear. People experience the “fight or flight reaction” (FFR) under such circumstances, as it is known that people exhibit the FFR when they feel anxiety, strain, or threat. If the manifestation of the FFR in a driver can be determined using a biological measurement, it would be an extremely effective indicator that might help in the prevention of car accidents. In this research, we conducted FFR-arousing experiments using a driving simulator, and the STSDA method was used to detect spatio-temporal changes in the skin temperature on facial skin thermograms accompanying the occurrence of the FFR.

Stress Presumption of the Long Driving Using the Facial Thermal Image

2010 ◽  
Vol 22 (6) ◽  
pp. 751-757 ◽  
Author(s):  
Hirotoshi Asano ◽  
◽  
Hitoshi Onogaki ◽  
Takumi Muto ◽  
Syuichi Yokoyama ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Stress Level ◽  
Mental State ◽  
Thermal Image ◽  
Temperature Pattern ◽  
Facial Skin ◽  
Psychological States ◽  
Quantitative Measurements ◽  
Car Accidents ◽  
Close Relationship

There is a close relationship between car accidents and the physiological and psychological states of drivers. Stress may lead to a feeling of fatigue or a decrease in attentiveness. Therefore, it is an important subject from viewpoints such as that of accident prevention to evaluate the mental state of drivers behind the wheel. This research aims at the development of technology that will take quantitative measurements of stress based on facial skin temperature. It is based on the relation between facial skin temperature and changes in mental state. Presumption of stress level of a driver was attempted from the change in temperature pattern of a series of readings.

Measuring Facial Skin Temperature Changes Caused by Mental Work-Load with Infrared Thermography

2016 ◽  
Vol 136 (11) ◽  
pp. 1581-1585 ◽  
Author(s):  
Tota Mizuno ◽  
Takeru Sakai ◽  
Shunsuke Kawazura ◽  
Hirotoshi Asano ◽  
Kota Akehi ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Infrared Thermography ◽  
Work Load ◽  
Facial Skin ◽  
Mental Work ◽  
Temperature Changes ◽  
Mental Work Load

Facial skin temperature decreases in infants with joyful expression

2008 ◽  
Vol 31 (1) ◽  
pp. 137-144 ◽  
Author(s):  
Rie Nakanishi ◽  
Kyoko Imai-Matsumura
Keyword(s):  
Skin Temperature ◽  
Facial Skin

International Classification of External Causes of Injury: a cross sectional study on its coverage rate in Iran

2019 ◽  
Author(s):  
Fatemeh Salehi ◽  
Leila Ahmadian ◽  
Shabnam Padidar
Keyword(s):  
Similar Rate ◽  
Cross Sectional Study ◽  
Coverage Rate ◽  
Classification Systems ◽  
International Classification ◽  
Cross Sectional ◽  
Car Accidents ◽  
External Causes ◽  
Car Accident

Abstract Background Injuries are a major health issue worldwide and their prevention requires access to accurate statistics in this area. This can be achieved by using the data collected through the international classification systems. This study aimed at investigating the coverage rate of the International Classification of External Causes of Injury (ICECI) regarding the external causes of injury in Shahid Bahonar Hospital.Method This cross-sectional descriptive-analytical study was performed on 322 injured individuals visiting the emergency unit of Shahid Bahonar Hospital. The data were gathered through patients’ records, a designed form and interviews. The collected data were encoded based on the ICECI textbook by two encoders. Their agreement rate was calculated using the Kappa estimate of agreement. The coverage rate of the classification system and the degree of completeness of the required data for encoding in the patients’ records was measured. Data were analyzed by the SPSS software, ver. 19.Results The findings showed that 70% of the studied external causes of injury were covered by the ICECI system. Among the 322 cases, 138 (43%) had been referred due to car accidents. The injured were mostly drivers of land transport vehicles who had been unintentionally involved in a car accident. The least mechanism for injury was bite injury with 5 (2%) cases which had occurred at home or public transport with a similar rate and totally unintentional. ICECI was capable of classifying 92% of the data related to incident causes. The most incongruous coverage of this system belonged to the "activity when injured" axis (n=18). Lack of precise data recording in the medical files resulted in missing data in at least one of the axis of the incident causes in most records.Conclusion Given that some information regarding the external cause of injury was not categorized by the ICECI system, this research can identify the shortcomings of the system and help its developers to amend it in future revisions.

scholarly journals Face Temperature as an Indicator of Thermal Stress in Outdoor Work Environments

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 627 ◽  
Author(s):  
Scott Hastings ◽  
Se Woong Kim ◽  
Robert D. Brown
Keyword(s):  
Skin Temperature ◽  
Facial Skin ◽  
Thermal Perception ◽  
Outdoor Workers ◽  
Novel Approach ◽  
Outdoor Work ◽  
Work Cycle ◽  
Hot Environments ◽  
Short Time ◽  
Face Temperature

The frequency and duration of heatwaves are steadily increasing as climate change becomes more serious. These changes particularly endanger the health of those who must work outdoors in hot environments. This study introduces a novel approach to monitor the heat-health of airport outdoor workers using infrared thermography. The faces of airport workers who were refueling airplanes in extreme heat conditions were monitored using a thermal infrared thermometer during their work cycle throughout the day. Changes in temperature on their exposed faces (e.g., the ear, cheek, chin) were monitored throughout the day over a two-month period. In every test, the subject’s face temperature increased, then suddenly dropped for a short time, and then continued increasing. Subjects were also asked to assess their thermal perception of the work each time they were tested throughout the study. They reported that they felt discomfort in terms of thermal comfort when the facial skin temperature went down temporarily before the temperature rose. These results show that the physical measurement criteria when outdoor workers’ thermal health is in jeopardy can be based on the results of facial skin temperature measurements.

Car accident in synchronized traffic flow: A stochastic cellular automaton model

2020 ◽  
pp. 2150011
Author(s):  
A. Karakhi ◽  
A. Laarej ◽  
A. Khallouk ◽  
N. Lakouari ◽  
H. Ez-Zahraouy
Keyword(s):  
Periodic Boundary Condition ◽  
Correlation Coefficients ◽  
Fundamental Diagram ◽  
Velocity Correlation ◽  
Car Accidents ◽  
Moving Vehicles ◽  
Car Accident ◽  
Velocity Correlation Coefficients ◽  
Stochastic Cellular Automaton

In this paper, we study the probability of car accidents in the modified Nagel–Schreckenberg (mNaSch) under the periodic boundary condition. In order to understand the quality of interaction between vehicles in each phase of the mNaSch, the velocity correlation coefficients were investigated. The effect of the evacuation of damaged vehicles was also studied. The fundamental diagram of the system is constructed in both cases with and without the evacuation. We found that the synchronized phases in the mNaSch are manifested into two aspects. In the first phase, the velocity correlation coefficients are zero where all vehicles move at the same speed. Hence, in the other phase, the speed of vehicles shows a synchronization as the form of clusters of moving vehicles where two speeds predominate simultaneously and the velocity correlation coefficients are higher. In addition, the car accidents in the modified mNaSch depend strongly on the initial configuration especially, if we consider those car accidents really happening in the system. The evacuation of damaged vehicles enhances the traffic situation and qualitatively changes the traffic phases in the mNaSch.

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