Carolina Diaz-Piedra1, Jose M Sanchez-Carrion2, Héctor Rieiro3, Leandro L Di Stasi4. 1. Mind, Brain, and Behavior Research Center, University of Granada, Granada, Spain; College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ. 2. IAVANTE, Line of Activity of the Andalusian Public Foundation for Progress and Health, Ministry of Equality, Health and Social Policy of the Regional Government of Andalusia, Granada, Spain. 3. Mind, Brain, and Behavior Research Center, University of Granada, Granada, Spain. 4. Mind, Brain, and Behavior Research Center, University of Granada, Granada, Spain; College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ. Electronic address: distasi@ugr.es.
Abstract
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.
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.
Authors: Lauren R Kennedy-Metz; Pietro Mascagni; Antonio Torralba; Roger D Dias; Pietro Perona; Julie A Shah; Nicolas Padoy; Marco A Zenati Journal: IEEE Trans Med Robot Bionics Date: 2020-11-24