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

被引:55
作者
Biondi, Francesco N. [1 ,3 ]
Cacanindin, Angela [1 ]
Douglas, Caitlyn [2 ]
Cort, Joel [1 ]
机构
[1] Univ Windsor, Dept Kinesiol, 2555 Coll Ave, Winsdor, ON, Canada
[2] Univ Windsor, Winsdor, ON, Canada
[3] Univ Utah, Salt Lake City, UT USA
关键词
cognitive workload; assembly task; multitasking; cognitive ergonomics; muscle activity; MUSCLE; DISTRACTION; DRIVER;
D O I
10.1177/0018720820929928
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
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 then-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.
引用
收藏
页码:813 / 820
页数:8
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