TY  - JOUR
PY  - 2016//
TI  - The influence of vibration on seated human drowsiness
JO  - Industrial health
A1  - Azizan, Amzar
A1  - Fard, Mohammad
A1  - Azari, Michael F.
A1  - Benediktsdottir, Bryndis
A1  - Arnardóttir, Erna Sif
A1  - Jazar, Reza
A1  - Maeda, Setsuo
SP  - 296
EP  - 307
VL  - 54
IS  - 4
N2  - 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.    Keywords: Driver distraction <p />  <p>Language: en</p>
LA  - en
SN  - 0019-8366
UR  - http://dx.doi.org/10.2486/indhealth.2015-0095
ID  - ref1
ER  -