![]() Moreover, the additional workload required for subconscious processing of subliminal visual stimuli is less than the one required for supraliminal visual stimuli, which is processed instead at the conscious level. We found that subliminal visual stimulation is a valid method to improve trainees' upper limb posture during laparoscopic training. ![]() The control group instead was exposed to longer (about 660 ms) supraliminal visual stimuli. One group was exposed, when their posture was not correct during training, to a short (about 33 ms) subliminal visual stimulus. A monitor displayed not only images from laparoscope, but also a visual stimulus, a transparent red cross superimposed to the laparoscopic images, when the trainee had incorrect upper limb posture. In this paper, the authors propose a method, named subliminal persuasion, which gives the trainee real-time advice for correcting the upper limb posture during laparoscopic training like the expert but leads to a lower increment in the workload.Ī 9-axis inertial measurement unit was used to compute the upper limb posture, and a Detection Reaction Time device was developed and used to measure the workload. However, a poor posture can result in increased static muscle loading, faster fatigue, and impaired psychomotor task performance. Current training for laparoscopy focuses only on the enhancement of manual skill and does not give advice on improving trainees' posture.
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