alexa Psycho Physiological and Subjective Responses to Mental Workload Levels during N-Back Task
ISSN-2165-7556

Journal of Ergonomics
Open Access

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Research Article

Psycho Physiological and Subjective Responses to Mental Workload Levels during N-Back Task

Majid Fallahi1*, Rashid Heidarimoghadam2, Majid Motamedzade2 and Maryam farhadian3

1Department of Occupational Health Engineering, School Of Public Health, Sabzevar University Of Medical Sciences, Sabzevar, Iran

2Department of Ergonomics, Faculty of Health and Medical Sciences Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran

3Department of Biostatistics and Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran

Corresponding Author:
Majid Fallahi
Department Of Occupational Health Engineering
School Of Public Health, Sabzevar University Of Medical Sciences, Sabzevar, Iran
Tel: +98 5144011385
E-mail: [email protected]

Received Date: October 18, 2016; Accepted Date: November 02, 2016; Published Date: November 09, 2016

Citation: Fallahi M, Heidarimoghadam R, Motamedzade M, Farhadian M (2016) Psycho Physiological and Subjective Responses to Mental Workload Levels during N-Back Task. J Ergonomics 6:181. doi: 10.4181/2165-7556.1000181

Copyright: © 2016 Fallahi M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The present study investigated the effects of mental workload levels on psychophysiological and subjective responses during n-Back task. Heart rate, heart rate variability, shoulder muscle activity, EEG and EOG were measured during performing four mental tasks by 32 males. NASA-TLX completed at the end of each mental task. Using NASA-TLX the subjects stated that the task demands of very high mental task were higher than those of low, medium and high mental tasks. By increasing mental workload LF/HF ratio, shoulder muscle activity, eye activity and alpha activity significantly changed. It suggests that mentioned indices have enough sensitivity to quantify mental workload. Future studies should implement to determine the long-term effects such as cardiovascular and mental disorders in both males and females which experience different levels of mental workload in daily working condition. To get better results suggested those parameters such as: cultural differences, anthropometric data, body mass index, alertness, shift work and menstrual cycle take into account.

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