Effect of mediolateral vibration magnitude and frequency on the cognitive response and spatiotemporal gait parameters
Bibliographic record
Abstract
Exposure to foot-transmitted vibration (FTV) in the transportation industry could lead to altered locomotion and reaction times, leading to an increased risk of accidents. This research evaluates the effects of mediolateral FTV on cognitive performance and spatiotemporal parameters during walking on a treadmill. The effect of twenty-eight combinations of sinusoidal frequencies (ranging between 0.2 and 8 Hz) and magnitudes (ranging between 0.05 and 0.1 m/s) was investigated with ten young male subjects (26 ± 1.4 years). Participants performed the Brief-Psychomotor Vigilance Task (B-PVT) test to record the reaction times (RTs) to a visual stimulus in standing posture, while walking, and in the presence of FTV. Spatiotemporal gait parameters were also obtained with the use of an Azure Kinect DK (Microsoft ©). The results showed that the vibration magnitude affects participants' responsiveness and increases their RTs. Significant differences in PVT metrics were found by comparing standing and walking trials with and without FTV exposure. The frequency factor influences gait parameters with an increase in the stride time and the step width at 1–2 Hz. These findings suggest that vigilance and gait pattern may be negatively affected by exposure to mediolateral FTV. • Performing a cognitive test during foot-transmitted vibration exposure alters gait. • Responsiveness is lower during gait, regardless of vibration exposure. • Vibration magnitude (velocity) affects reaction times. • Vibration frequency influences stride time and the step width.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".