Work and Sustainable Forest Management

Lewark, S.

doi:10.1007/978-3-662-64444-7_2

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…Unfortunately, it is not possible to protect an employee completely from all negative factors in the work environment. The use of harvesters has significantly reduced the severity of work accidents (or work-related illness) and the harmful effects of noise and vibration in comparison with chainsaw work but has also resulted in the exposure of operators to new risks, primarily musculoskeletal disorders resulting from prolonged sitting and repetitive work movements [6,7] and an increase in mental stress [8,9].…”

Section: Introductionmentioning

confidence: 99%

Eye-Tracking in Assessment of the Mental Workload of Harvester Operators

Naskrent

Grzywiński

Polowy

et al. 2022

IJERPH

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Harvesting large quantities of timber requires the use of various technical means, including harvesters. The introduction of machine logging has greatly improved safety and reduced accident rates but has also resulted in the risk of musculoskeletal disorders and increased psychological strain. The aim of this study was to determine the level of the mental workload of harvester operators in wind-damaged stands, during daytime and nighttime clearfelling, and during late thinning using the technique of eye-tracking (analysis of saccades and pupil dilation). The highest number of saccades for both felling and processing operations was recorded during daytime and nighttime clearcutting, while the lowest number was recorded in late thinning. For both operations, the highest mean saccade duration was found in late thinning (felling 38.7 ms, processing 36.0 ms) and the lowest in nighttime cutting (felling 33.1 ms, processing 35.5 ms). The highest frequency of saccades in both operations was recorded in clearcut areas during both daytime and nighttime operations. The largest mean pupil diameters during saccades were recorded in night clearfelling plots (felling 5.57 mm, processing 5.52 mm), while the smallest were recorded in plots with windbreaks (felling 2.91 mm, processing 2.89 mm). Comparison of the number, duration, frequency, and time proportion of saccades as well as pupil diameter provided a quantifiable assessment of mental workload in clearcut, wind-damaged, and thinning stands. The indicators analyzed showed that the cutting category can significantly affect the level of mental workload and thus fatigue of harvester operators.

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Section: Introductionmentioning

confidence: 99%