Examination of perceptions (intensity, seat comfort, effort) and reaction times (brake and accelerator) during low-frequency vibration in x- or y-direction and biaxial (xy-) vibration of driver seats with activated and deactivated suspension

Examination of the Frequency-weighting Curve for Accelerations Measured on the Seat and at the Surface Supporting the Feet during Horizontal Whole-body Vibrations in x- and y-Directions

“…The authors have already performed similar investigations using cross-modality matching for the subjective judgements, but the vibration signals and seats were not comparable with those in the current study. However, the authors understood from their previous experi-ence 21,26) that six subjects should be sufficient for discovering significant differences in the mean values of intensity or comfort judgements due to different vibration magnitude levels. There were no available data obtained by the authors concerning the effects of different frequencies, directions and types of vibration signals, using the same method in previous studies.…”

“…There were some doubts, whether the subjects were able to differentiate between the vibration comfort and the comfort of the entire situation including permanent demands on concentration and sitting a long period of time on the rigid seat without exercise. Schust 21) revealed that the subjects were not able to differentiate between the vibration comfort and the comfort of the entire situation when they had to judge the seat comfort. In Schust 21) , the seat comfort decreased significantly with time.…”

“…Schust 21) revealed that the subjects were not able to differentiate between the vibration comfort and the comfort of the entire situation when they had to judge the seat comfort. In Schust 21) , the seat comfort decreased significantly with time. So, it could be the case that the vibration comfort judgements were influenced by time.…”

Whole-body vibration and occupational physical performance: a review

“…Invariably, these characteristics fluctuate between investigations, so it is important to consider each characteristic amongst studies, as different exposures of vibration have been found to yield different results Griffin 1990;Schust et al 2006).…”

Research Using Virtual Reality: Mobile Machinery Safety in the 21st Century

“…The levels of muscle activation, and the occurrence of muscular fatigue, can be directly assessed using electromyography [34,35,89]. In addition, the influence of whole-body vibration on parameters such as reaction time [90], task performance [91], distraction [92] and psychological effects [93] can also be measured.…”