Title |
The influence of vibration on seated human drowsiness
|
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Published in |
Industrial Health, January 2016
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DOI | 10.2486/indhealth.2015-0095 |
Pubmed ID | |
Authors |
Amzar AZIZAN, FARD Mohammad, Michael F. AZARI, Bryndís BENEDIKTSDÓTTIR, Erna Sif ARNARDÓTTIR, Reza JAZAR, Setsuo MAEDA |
Abstract |
Although much is known about human body vibration discomfort, there is little research data on the effects of vibration on vehicle occupant drowsiness. A laboratory experimental setup has been developed. Vibration was applied to the volunteers sitting on the vehicle seat mounted on the vibration platform. Seated volunteers were exposed to a Gaussian random vibration, with 1-15 Hz frequency bandwidth at 0.2 ms(-2) r.m.s., for 20-min. Two drowsiness measurement methods were used, Psychomotor Vigilance Test (PVT) and Karolinska Sleepiness Scale (KSS). Significant changes in PVT (p<0.05) and KSS (p<0.05) were detected in all eighteen volunteers. Furthermore, a moderate correlation (r>0.4) was observed between objective measurement (PVT) and subjective measurement (KSS). The results suggest that exposure to vibration even for 20-min can cause significant drowsiness impairing psychomotor performance. This finding has important implications for road safety. |
X Demographics
Geographical breakdown
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 68 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 10 | 15% |
Student > Ph. D. Student | 8 | 12% |
Student > Master | 8 | 12% |
Student > Bachelor | 6 | 9% |
Student > Doctoral Student | 4 | 6% |
Other | 14 | 21% |
Unknown | 18 | 26% |
Readers by discipline | Count | As % |
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Engineering | 18 | 26% |
Medicine and Dentistry | 6 | 9% |
Nursing and Health Professions | 5 | 7% |
Computer Science | 3 | 4% |
Psychology | 3 | 4% |
Other | 11 | 16% |
Unknown | 22 | 32% |