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Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance

OBJECTIVE: This study investigates the effect of cognitive overload on assembly task performance and muscle activity. BACKGROUND: Understanding an operator’s cognitive workload is an important component in assessing human–machine interaction. However, little evidence is available on the effect that...

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Autores principales: Biondi, Francesco N., Cacanindin, Angela, Douglas, Caitlyn, Cort, Joel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8273843/
https://www.ncbi.nlm.nih.gov/pubmed/32530759
http://dx.doi.org/10.1177/0018720820929928
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author Biondi, Francesco N.
Cacanindin, Angela
Douglas, Caitlyn
Cort, Joel
author_facet Biondi, Francesco N.
Cacanindin, Angela
Douglas, Caitlyn
Cort, Joel
author_sort Biondi, Francesco N.
collection PubMed
description OBJECTIVE: This study investigates the effect of cognitive overload on assembly task performance and muscle activity. BACKGROUND: Understanding an operator’s cognitive workload is an important component in assessing human–machine interaction. However, little evidence is available on the effect that cognitive overload has on task performance and muscle activity when completing manufacturing tasks. METHOD: Twenty-two volunteers completed an assembly task while performing a secondary cognitive task with increasing levels of demand (n-back). Performance in the assembly task (completion times, accuracy), muscle activity recorded as integrated electromyography (EMG), and self-reported workload were measured. RESULTS: Results show that the increasing cognitive demand imposed by the n-back task resulted in impaired assembly task performance, overall greater muscle activity, and higher self-reported workload. Relative to the control condition, performing the 2-back task resulted in longer assembly task completion times (+10 s on average) and greater integrated EMG for flexor carpi ulnaris, triceps brachii, biceps brachii, anterior deltoid, and pectoralis major. CONCLUSION: This study demonstrates that working under high cognitive load not only results in greater muscle activity, but also affects assembly task completion times, which may have a direct effect on manufacturing cycle times. APPLICATION: Results are applicable to the assessment of the effects of high cognitive workload in manufacturing.
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spelling pubmed-82738432021-07-20 Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance Biondi, Francesco N. Cacanindin, Angela Douglas, Caitlyn Cort, Joel Hum Factors Special Section: Measuring Cognitive Workload in Human Factors OBJECTIVE: This study investigates the effect of cognitive overload on assembly task performance and muscle activity. BACKGROUND: Understanding an operator’s cognitive workload is an important component in assessing human–machine interaction. However, little evidence is available on the effect that cognitive overload has on task performance and muscle activity when completing manufacturing tasks. METHOD: Twenty-two volunteers completed an assembly task while performing a secondary cognitive task with increasing levels of demand (n-back). Performance in the assembly task (completion times, accuracy), muscle activity recorded as integrated electromyography (EMG), and self-reported workload were measured. RESULTS: Results show that the increasing cognitive demand imposed by the n-back task resulted in impaired assembly task performance, overall greater muscle activity, and higher self-reported workload. Relative to the control condition, performing the 2-back task resulted in longer assembly task completion times (+10 s on average) and greater integrated EMG for flexor carpi ulnaris, triceps brachii, biceps brachii, anterior deltoid, and pectoralis major. CONCLUSION: This study demonstrates that working under high cognitive load not only results in greater muscle activity, but also affects assembly task completion times, which may have a direct effect on manufacturing cycle times. APPLICATION: Results are applicable to the assessment of the effects of high cognitive workload in manufacturing. SAGE Publications 2020-06-12 2021-08 /pmc/articles/PMC8273843/ /pubmed/32530759 http://dx.doi.org/10.1177/0018720820929928 Text en Copyright © 2020, The Author(s) https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Special Section: Measuring Cognitive Workload in Human Factors
Biondi, Francesco N.
Cacanindin, Angela
Douglas, Caitlyn
Cort, Joel
Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title_full Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title_fullStr Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title_full_unstemmed Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title_short Overloaded and at Work: Investigating the Effect of Cognitive Workload on Assembly Task Performance
title_sort overloaded and at work: investigating the effect of cognitive workload on assembly task performance
topic Special Section: Measuring Cognitive Workload in Human Factors
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8273843/
https://www.ncbi.nlm.nih.gov/pubmed/32530759
http://dx.doi.org/10.1177/0018720820929928
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