Realistic Hands-On Model for Neurosurgical Training (image) Journal of Neurosurgery Publishing Group Share Print E-Mail Caption A perforator creates a bur hole in the model of a skull. The model, produced using the latest generation of multimaterial 3D printers, is composed of a variety of materials that simulate the various consistencies and densities of human tissues encountered during neurosurgery. Credit © American Association of Neurosurgeons, 2013. Usage Restrictions Permission to reproduce this figure must be requested from the Journal of Neurosurgery by emailing email@example.com. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.