EEG-Based Classification of Cognitive Load and Task Conditions for AR Supported Construction Assembly: A Deep Learning Approach
Publication: Computing in Civil Engineering 2023
ABSTRACT
Cognitive load is a metric that reflects construction workers’ mental effort during task performance for perceiving information and stimuli from the working environment. Potential cognitive impacts of human-system interaction must be evaluated carefully, specifically when proposing innovative display methods to improve traditional construction assembly patterns. However, identifying cognitive load during task performance is difficult because of the lack of directly observable features. This research proposed a deep learning classification of cognitive load and task conditions to address this problem based on an electroencephalogram (EEG)-centered physiological measurement. The study recruited 30 subjects to assemble medium-sized wood frame walls with an augmented reality (AR) conformal model. EEG was used as a neuroimaging technique to collect subjects’ brain rhythm signals. The task conditions (relax and observe, and assemble) were assigned to represent two different levels of cognitive load. The one-dimensional convolutional neural network-long short-term memory (1D CNN-LSTM) was deployed to classify the subtasks based on the EEG signal. Additionally, comparison tests for performance evaluation with other deep learning networks (1D CNN and LSTM) were conducted. The outcomes validated the usability of the proposed approach for identifying different task conditions with cognitive loads, which provides a prediction accuracy of 93.60%. Moreover, it suggested a promising application of workers’ activity recognition based on the EEG signal classification.
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Published online: Jan 25, 2024
ASCE Technical Topics:
- Artificial intelligence and machine learning
- Business management
- Computer programming
- Computing in civil engineering
- Construction engineering
- Construction methods
- Design (by type)
- Employment
- Engineering fundamentals
- Frames
- Human and behavioral factors
- Innovation
- Labor
- Load factors
- Measurement (by type)
- Metric systems
- Neural networks
- Personnel management
- Practice and Profession
- Structural design
- Structural engineering
- Structural members
- Structural systems
- Wood frames
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