Can surgeons think and operate with haptics at the same time?

Area of Science:

• Medical Simulation
• Surgical Education
• Human Factors Engineering

Background:

• Haptic feedback integration in surgical simulators is a growing area of research.
• The impact of haptic feedback on novice surgical trainees' learning curve remains unclear.
• Novices may lack sufficient attentional resources for haptic cue utilization during skill acquisition.

Purpose of the Study:

• To investigate whether novice surgeons possess adequate cognitive resources to effectively utilize haptic information during simulated tasks.
• To evaluate the impact of cognitive load on performance in a surgical simulator with and without haptic feedback.
• To determine if haptic feedback can mitigate the negative effects of cognitive load on surgical skill acquisition.

Main Methods:

• Thirty surgical residents and attendings participated in the study.
• A TransferPlace task was performed in a surgical simulator, with and without haptic feedback.
• Cognitive load was introduced using a concurrent mental arithmetic task.
• Performance metrics including speed and accuracy were recorded under varying cognitive load conditions.

Main Results:

• Cognitive loading significantly slowed performance (27%) but did not affect accuracy, indicating a speed-accuracy tradeoff.
• Haptic feedback significantly improved performance, with subjects performing 36% faster and 97% more accurately compared to non-haptic conditions.
• The performance enhancement and mitigation of cognitive load effects by haptics were more pronounced in experienced surgeons.

Conclusions:

• Haptic feedback in surgical simulators can enhance trainee performance and accuracy.
• Haptic technology can effectively counteract the detrimental effects of cognitive load on surgical task performance.
• The benefits of haptic feedback are more significant for experienced surgeons, suggesting greater spare cognitive capacity.