TY - JOUR
T1 - Methods of collection of biological information for fatigue evaluation during Visual Display Terminals (VDT) operation
AU - Hachiya, Yuriko
AU - Ogai, Harutoshi
AU - Okazaki, Hiroko
AU - Fujisaki, Takeshi
AU - Uchida, Kazuhiko
AU - Oda, Susumu
AU - Wada, Futoshi
AU - Mori, Koji
PY - 2008
Y1 - 2008
N2 - A method for the analysis of fatigue parameters has been rarely researched in VDT operation. Up to now, fatigue was evaluated by changing of biological information. If signals regarding fatigue are detected, fatigue can be measured. The purpose of this study proposed experiment and analysis method to extract parameters related to fatigue from the biological information during VDT operation using the Independent Component Analysis (ICA). An experiment had 11 subjects. As for the experiment were light loaded VDT operation and heavy loaded VDT operation. A measurement item were amount of work, a mistake number, subjective symptom, surface skin temperature (forehead and apex nasi), heart rate, skin blood flow of forearm and respiratory rate. In the heavy loaded operation group, mistake number and subjective symptom score were increased to compare with the other. And Two-factor ANOVA was used for analysis. The result of mistake number was confirmed that heavy loaded. After the moving averages of waveshape were calculated, it was made to extract independent components by using the ICA. The results of the ICA suggest that the independent components increase according to accumulation of fatigue. Thus, the independent components would be a possible parameter of fatigue. However, further experiments should continue in order to obtain the conclusive finding of our research.
AB - A method for the analysis of fatigue parameters has been rarely researched in VDT operation. Up to now, fatigue was evaluated by changing of biological information. If signals regarding fatigue are detected, fatigue can be measured. The purpose of this study proposed experiment and analysis method to extract parameters related to fatigue from the biological information during VDT operation using the Independent Component Analysis (ICA). An experiment had 11 subjects. As for the experiment were light loaded VDT operation and heavy loaded VDT operation. A measurement item were amount of work, a mistake number, subjective symptom, surface skin temperature (forehead and apex nasi), heart rate, skin blood flow of forearm and respiratory rate. In the heavy loaded operation group, mistake number and subjective symptom score were increased to compare with the other. And Two-factor ANOVA was used for analysis. The result of mistake number was confirmed that heavy loaded. After the moving averages of waveshape were calculated, it was made to extract independent components by using the ICA. The results of the ICA suggest that the independent components increase according to accumulation of fatigue. Thus, the independent components would be a possible parameter of fatigue. However, further experiments should continue in order to obtain the conclusive finding of our research.
KW - Biological information
KW - Fatigue
KW - ICA (Independent Component Analysis)
KW - VDT (Visual Display Terminals)
UR - http://www.scopus.com/inward/record.url?scp=72149091188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=72149091188&partnerID=8YFLogxK
U2 - 10.1541/ieejeiss.128.45
DO - 10.1541/ieejeiss.128.45
M3 - Article
AN - SCOPUS:72149091188
SN - 0385-4221
VL - 128
SP - 5+45-54
JO - IEEJ Transactions on Electronics, Information and Systems
JF - IEEJ Transactions on Electronics, Information and Systems
IS - 1
ER -