Objective: To assess the sensitivity of gaze-based metrics in detecting cognitive demands imposed by surgical procedures. We analyzed urologists' gaze entropy and velocity while performing 2 standardized high-fidelity simulated stone procedures with different levels of complexity.
Methods: Using a wearable eye tracker device (mounted onto an eyeglass frame), we measured gaze entropy and velocity in 15 urologists, members of the Andalusian health-care system, while they performed an extraction of a stone in the bladder (low complexity) and an extraction of a stone in the lumbar ureter (high complexity). We also collected performance and subjective data.
Results: Gaze entropy and velocity were significantly higher when surgeons performed the most complex surgical procedure: the visual exploration pattern became less stereotyped (ie, more random) and faster. Surgeons' performance and perceived task complexity differed accordingly, confirming the gaze-based results.
Conclusion: Gaze-based metrics might have great potential as objective and nonintrusive indices to assess surgeons' cognitive (over)load, potentially being a complementary assessment tool to quantify the learning curve for surgical procedures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.urology.2017.06.030 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Vestibular patients generate more regular head movements than healthy individuals during gaze-stabilization exercises.
Sci Rep
January 2025
Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, USA.
The vestibular system is vital for maintaining stable vision during daily activities. When peripheral vestibular input is lost, patients initially experience impaired gaze stability due to reduced effectiveness of the vestibular-ocular-reflex pathway. To aid rehabilitation, patients are often prescribed gaze-stabilization exercises during which they make self-initiated active head movements.
View Article and Find Full Text PDFExploring the Relationship Between Drivers' Stationary Gaze Entropy and Situation Awareness in a Level-3 Automation Driving Simulation.
Proc Hum Factors Ergon Soc Annu Meet
September 2024
University of Waterloo, ON, Canada.
The transition period from automation to manual, known as the takeover process, presents challenges for drivers due to the deficiency in collecting requisite contextual information. The current study collected drivers' eye movement in a simulated takeover experiment, and their Situation Awareness (SA) was assessed using the Situation Awareness Global Assessment Technique (SAGAT) method. The drivers' Stationary Gaze Entropy (SGE) was calculated based on the percentages of time they spent on six pre-defined Areas of Interests (AOIs).
View Article and Find Full Text PDFImpact of automation level on airline pilots' flying performance and visual scanning strategies: A full flight simulator study.
Appl Ergon
December 2024
Fédération ENAC ISAE-SUPAERO ONERA, Université de Toulouse, France; CLLE, Université de Toulouse, CNRS, UT2J & ENAC, Toulouse, France.
Cockpit automation has brought significant benefits in terms of mental workload and fatigue. However, the way primary flight instruments are monitored by pilots may be negatively affected by the high confidence in systems. We examined the effects of automation level on mental workload, manual flight performance and visual strategies.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates how individuals infer mental states, focusing on the cognitive processes involved in attributing intentionality, particularly in violent offenders compared to non-offenders.
- Using a measure called gaze transition entropy (GTE), it assesses how social cues influence the attribution of intent.
- Results indicate that violent offenders exhibit lower entropy, suggesting they may struggle more with attentional processes and are more prone to hostile interpretations in ambiguous situations.
Group cycling in urban environments: Analyzing visual attention and riding performance for enhanced road safety.
Accid Anal Prev
January 2025
School of Safety Science, Tsinghua University, Beijing 100084, China; Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China. Electronic address:
China is a major cycling nation with nearly 400 million bicycles, significantly alleviating urban traffic congestion. However, safety concerns are prominent, with approximately 35% of cyclists forming groups with family, friends, or colleagues, exerting a significant impact on the traffic system. This study focuses on group cycling, employing urban cycling experiments, GPS trajectory tracking, and eye-tracking to analyze the visual search, and cycling control of both groups and individuals.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!