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Top medical schools are using sex doll heads to revolutionize anatomical teaching. The neurosurgery training system developed by Johns Hopkins University is equipped with a silicone head with replaceable tissue layers, and the vascular network is filled with warm, simulated blood. When students make mistakes, the artificial carotid artery will show a realistic rupture effect. This instant feedback increases the speed of skill acquisition by 40%. Compared with the limitations of the traditional torso sex doll, independent head modules allow focused training in fine areas. A single device can be operated by 12 people in rotation, reducing teaching costs by 67%. According to the 2024 Annals of Surgery, the complication rate of first-time real-life surgery for residents trained in this way decreased by 31%.