Related Experiment Video
Updated: Nov 23, 2025
07:15
Tactile Vibrating Toolkit and Driving Simulation Platform for Driving-Related Research
Published on: December 18, 2020
4.8K
The Relationship Between Drivers' Cognitive Fatigue and Speed Variability During Monotonous Daytime Driving
Jinfei Ma1, Jiaqi Gu1, Huibin Jia2
1School of Psychology, Liaoning Normal University, Dalian, China.
Frontiers in Psychology
|April 20, 2018
Summary
Increasing speed variability during monotonous drives reduces driver sleepiness and fatigue. Higher speed variability enhances vigilance and may deter cognitive fatigue in drivers.
Area of Science:
- Human Factors
- Transportation Psychology
- Cognitive Neuroscience
Background:
- Prolonged driving, especially monotonous conditions, can cause cognitive fatigue and reduced vigilance.
- Task workload is a critical factor influencing driver alertness and performance.
Purpose of the Study:
- To investigate the impact of speed variability on driving fatigue during a simulated monotonous drive.
- To assess the relationship between speed variability and cognitive fatigue using psychological and physiological measures.
Main Methods:
- A 60-minute simulated driving task was conducted with 21 participants.
- Cognitive fatigue was measured using psychological self-reports and physiological indicators, including electroencephalogram (EEG) spectral analysis.
- Participants were divided into groups based on the degree of speed variability (large vs. small).
Main Results:
- Speed variability was negatively correlated with driver sleepiness and hypo-vigilance.
- Drivers in the large speed variability group reported significantly less sleepiness and fatigue, and greater vigilance.
- The large variability group exhibited a smaller (theta + alpha) / beta EEG spectral index, indicating reduced cognitive load or fatigue.
Conclusions:
- Increased speed variability, within legal limits, can act as a countermeasure against driver cognitive fatigue.
- Manipulating speed variability may be a viable strategy to enhance driver alertness and safety in monotonous driving conditions.
Related Concept Videos
01:30Introduction to Limits
69
A limit describes the value a function approaches as its input moves closer to a particular point. Even when a function is undefined at a specific value, limits allow us to analyze its behavior near that point. This concept is fundamental in calculus and essential for understanding continuity, derivatives, and integrals.Mathematically, a function f(x) has a limit L at x = a if its values L approach x as x gets arbitrarily close to a. This is written as:This notation expresses that the function...
69
01:25Self-Regulation
118
Self-regulation, also known as self-control, encompasses a range of cognitive and behavioral processes that allow individuals to adjust their internal states and outward actions to align with socially acceptable norms and long-term goals. It plays a fundamental role in adaptive functioning, from resisting impulsive behaviors to persisting through challenging tasks. While its benefits are widely recognized, self-regulation is not limitless. Muraven and Baumeister's theory posits that...
118
01:21Fatigue
492
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
492
01:19High-Level and Low-Level Awareness
507
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
507
01:07Narcolepsy
304
Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
304
01:30Factors Influencing Heart Rate
5.7K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
5.7K