Estimation of Human Reaction Time Delay During Balancing on Balance Board

2017 ◽  
Author(s):  
Csenge A. Molnar ◽  
Ambrus Zelei ◽  
Tamas Insperger
Keyword(s):  
Reaction Time ◽  
Time Delay ◽  
Human Reaction ◽  
Human Reaction Time ◽  
Balance Board

Effects of Aircraft Motion on Passengers' Comfort Ratings and Response Times

1980 ◽  
Vol 50 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Edward J. Rinalducci
Keyword(s):  
Reaction Time ◽  
Field Study ◽  
Ride Comfort ◽  
Response Times ◽  
Laboratory Data ◽  
Large Body ◽  
General Purpose ◽  
Human Reaction ◽  
Aircraft Motion ◽  
Human Reaction Time

Comfort ratings and response times for changes in the experienced level of comfort were examined in 20 subjects using the NASA Flight Research Center's Jetstar aircraft modified to carry the GPAS system (General Purpose Airborne Simulator). Data were obtained for each of the subjects during two runs of 10 1-min. flight segments. In general, as the magnitude of aircraft motion increased in either the vertical or transverse (lateral) directions, there was an increase in feelings of discomfort and a decrease in response times to those changes. These results suggest parallels between the large body of laboratory data on human reaction time and that collected in this field study on response times to changes in ride comfort.

Rolling balance board of adjustable geometry as a tool to assess balancing skill and to estimate reaction time delay

2021 ◽  
Vol 18 (176) ◽  
Author(s):  
Csenge A. Molnar ◽  
Ambrus Zelei ◽  
Tamas Insperger
Keyword(s):  
Reaction Time ◽  
Time Delay ◽  
Feedback Control ◽  
Mechanical Model ◽  
Human Subjects ◽  
Reaction Times ◽  
Physical Parameters ◽  
Stabilizing Feedback Control ◽  
Model Subject ◽  
Balance Board

The relation between balancing performance and reaction time is investigated for human subjects balancing on rolling balance board of adjustable physical parameters: adjustable rolling radius R and adjustable board elevation h . A well-defined measure of balancing performance is whether a subject can or cannot balance on balance board with a given geometry ( R , h ). The balancing ability is linked to the stabilizability of the underlying two-degree-of-freedom mechanical model subject to a delayed proportional–derivative feedback control. Although different sensory perceptions involve different reaction times at different hierarchical feedback loops, their effect is modelled as a single lumped reaction time delay. Stabilizability is investigated in terms of the time delay in the mechanical model: if the delay is larger than a critical value (critical delay), then no stabilizing feedback control exists. Series of balancing trials by 15 human subjects show that it is more difficult to balance on balance board configuration associated with smaller critical delay, than on balance boards associated with larger critical delay. Experiments verify the feature of the mechanical model that a change in the rolling radius R results in larger change in the difficulty of the task than the same change in the board elevation h does. The rolling balance board characterized by the two well-defined parameters R and h can therefore be a useful device to assess human balancing skill and to estimate the corresponding lumped reaction time delay.

System Designed to Collect and Process Human Reaction Time Data

2021 ◽  
Author(s):  
Jozef Dziak ◽  
Richard Sinansky ◽  
Olena Slavko
Keyword(s):  
Reaction Time ◽  
Reaction Time Data ◽  
Time Data ◽  
Human Reaction ◽  
Human Reaction Time

A model of human reaction time to dangerous robot arm movements

1988 ◽  
Vol 19 (4) ◽  
pp. 337-338
Author(s):  
M.G. Helander ◽  
M.H. Karwan ◽  
J. Etherton
Keyword(s):  
Reaction Time ◽  
Arm Movements ◽  
Robot Arm ◽  
Human Reaction ◽  
Human Reaction Time

A Model of Human Reaction Time to Dangerous Robot Arm Movements

1987 ◽  
Vol 31 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Martin G. Helander ◽  
Mark H. Karwan ◽  
John Etherton
Keyword(s):  
Decision Making ◽  
Reaction Time ◽  
Motor Response ◽  
Arm Movements ◽  
Robot Arm ◽  
Total Reaction ◽  
Human Reaction ◽  
Arm Motion ◽  
Human Reaction Time ◽  
Total Reaction Time

An increasing number of studies indicate that robots are the most hazardous equipment in industry. The very virtue that makes them attractive for industrial work, the programmable arm, is the cause of accidents since the arm motion is often difficult to perceive. The present paper presents a model of human reaction time and emergency behavior. The total reaction time is the sum of three elements: perception, decision making and motor response. Each of these three elements are modeled using concepts such as perceptual discriminability and single detection theory. Finally the results of an experiment is presented where the human reaction time is modeled as a function of robot arm speed.

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