Rapid Dual-Task Decrements After a Brief Period of Manual Tracking in Simulated Weightlessness by Water Submersion

2021 ◽  
pp. 001872082110518
Author(s):  
Marc Dalecki ◽  
Fabian Steinberg ◽  
Rainer Beurskens
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Dual Task ◽  
Manual Tracking ◽  
Simulated Weightlessness ◽  
Dry Land ◽  
Choice Reaction Task ◽  
Task Time ◽  
Reaction Task ◽  
Over Time

Objective Investigating dual-task (DT) performance during simulated weightlessness by water submersion, using a manual tracking and a choice reaction task. In contrast to previous work, we focus on performance changes over time. Background Previous research showed motor tracking and choice reaction impairments under DT and single-task (ST) conditions in shallow water submersion. Recent research analyzed performance as average across task time, neglecting potential time-related changes or fluctuations of task-performance. Method An unstable tracking and a choice reaction task was performed for one minute under ST and DT conditions in 5 m water submersion and on dry land in 43 participants. Tracking and choice reaction time performance for both tasks were analyzed in blocks of 10 seconds. Results Tracking performance deteriorated underwater compared to dry land conditions during the second half while performing one minute in DT conditions. Choice reaction time increased underwater as well, but independent of task time and type. Conclusion Tracking error increased over time when performing unstable tracking and choice reaction together. Potentially, physiological and psychological alterations under shallow submersion further strain the human system during DT operations, exceeding available recourse capacities such that DT performance deteriorated over time. Application Humans operating in simulated weightlessness underwater should be aware of substantial performance declines that can occur within a short amount of time during DT situations that include continuous tracking.

Short-Term Effect of Physical Exercise at Lactate Threshold on Choice Reaction Time

2005 ◽  
Vol 100 (2) ◽  
pp. 275-291 ◽  
Author(s):  
Koji Kashihara ◽  
Yoshibumi Nakahara
Keyword(s):  
Reaction Time ◽  
Physical Exercise ◽  
Choice Reaction Time ◽  
Lactate Threshold ◽  
Control Period ◽  
Average Percentage ◽  
Positive Effects ◽  
Choice Reaction Task ◽  
Exercise Period ◽  
Reaction Task

The duration of the enhancement of choice reaction task efficiency by physical exercise at lactate threshold was studied. After healthy male students completed the exercise or nonexercise (control) period for 10 min., they performed a three-choice reaction task for 20 min. The mean heart rate during the choice reaction task after the exercise was higher than that after the control period ( p<.05). For average percentage of correct answers, there were no significant differences between the exercise and control conditions. The reaction time during the first 8 min. of the 20-min. choice reaction task after the exercise period was less than that after the control period and increased gradually thereafter. In conclusion, whereas the choice reaction time was improved by physical exercise at around lactate threshold, the positive effects were seen mainly in the early stages of the task.

Dual-Task Measures of S-R Compatibility

1979 ◽  
Vol 23 (1) ◽  
pp. 422-426
Author(s):  
George D. Ogden ◽  
Nancy S. Anderson ◽  
Angela M. Rieck
Keyword(s):  
Reaction Time ◽  
Task Performance ◽  
Dual Task ◽  
Tracking Task ◽  
Single Task ◽  
Induced Stress ◽  
Task Setting ◽  
Choice Reaction Task ◽  
Reaction Performance ◽  
Reaction Task

The present study was designed to compare single-task and dual-task measures of S-R compatibility. A numeral-motor choice-reaction task was performed alone and with a secondary tracking task. The level of compatibility was varied by manipulating the S-R assignments in the choice-reaction task. Results of the single-task trials indicated that reaction time was significantly slower for the incompatible conditions. Reaction time was slower, more errors were made, and fewer problems were attempted in the incompatible dual-task trials. Despite instructions to maintain choice-reaction performance at single-task levels, incompatible task performance was significantly degraded in the dual-task setting. Results indicated that resistance to task-induced stress may be a major indicant of the level of compatibility.

Interactions between Alcohol, Task Difficulty, and Compatibility in a Choice-Reaction Task

1974 ◽  
Vol 38 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Gordon H. Robinson ◽  
Warren J. Peebles
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Task Difficulty ◽  
Performance Decrement ◽  
Response Mapping ◽  
Stimulus Response ◽  
Choice Reaction Task ◽  
Response Alternatives ◽  
Reaction Task

This experiment examined the effects of alcohol stress on choice reaction-time tasks of differing difficulty (response alternatives) and compatibility (stimulus-response mapping). Performance decrement under alcohol stress depended on the interaction of task difficulty and compatibility, low compatibility having a larger effect in more difficult tasks.

scholarly journals Dual task performance in Huntington’s disease: A comparison of choice reaction time tasks.

2015 ◽  
Vol 29 (5) ◽  
pp. 703-712 ◽  
Author(s):  
Eleftheria Vaportzis ◽  
Nellie Georgiou-Karistianis ◽  
Andrew Churchyard ◽  
Julie C. Stout
Keyword(s):  
Reaction Time ◽  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Task Performance ◽  
Choice Reaction Time ◽  
Dual Task ◽  
Dual Task Performance

scholarly journals Dual Task Performance in Normal Aging: A Comparison of Choice Reaction Time Tasks

PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e60265 ◽  
Author(s):  
Eleftheria Vaportzis ◽  
Nellie Georgiou-Karistianis ◽  
Julie C. Stout
Keyword(s):  
Reaction Time ◽  
Task Performance ◽  
Choice Reaction Time ◽  
Dual Task ◽  
Normal Aging ◽  
Dual Task Performance

The Effects of Exhaustive Work on Choice Reaction Time Performance

1978 ◽  
Vol 22 (1) ◽  
pp. 21-21
Author(s):  
Rodney K. Schutz ◽  
Thomas F. Smith
Keyword(s):  
Reaction Time ◽  
Bicycle Ergometer ◽  
Exercise Group ◽  
Error Rates ◽  
Control Group ◽  
Time Performance ◽  
Reaction Time Performance ◽  
Choice Reaction Task ◽  
Male Subjects ◽  
Reaction Task

Reaction time and error rates on a simple reaction task and on a two-stage choice reaction task were measured. Performance was measured before, during and after exhaustive exercise. Nine exercise conditions were tested using a bicycle ergometer based on three pedal forces of 12.6, 21.1 and 29.5 pounds and three pedal rates of 30, 60 and 90 rpms. Exercise was continued until exhaustion or for 20 minutes. Eleven male subjects were randomly assigned to an eight man exercise group or a three-man control group. The study was conducted in three phases; an unlearned phase, a training phase and a fully learned phase.

Effects of Age, Gender, Activation, Stimulus Degradation and Practice on Attention and Visual Choice Reaction Time

1988 ◽  
Vol 32 (3) ◽  
pp. 203-207
Author(s):  
Max Vercruyssen ◽  
Michael T. Cann ◽  
Joan M. McDowd ◽  
James E. Birren ◽  
Barbara L. Carlton ◽  
...  
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Neural Activation ◽  
Stimulus Quality ◽  
Factors Influencing ◽  
Needed Information ◽  
Activation Level ◽  
The Subject ◽  
Stimulus Degradation ◽  
Reaction Task

This paper presents research conducted by the authors and others investigating the interaction of a variety of variables which are presumed to affect reaction time in hopes of obtaining much needed information on factors influencing age effects on attention and information processing. Reported is progress to date on an experiment which shows that the effects of age on central nervous system speed, as measured by visual choice reaction time, depends on many factors, including the gender, neural activation level, and skill of the subject as well as the stimulus quality and type of reaction task employed.

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