Automatic Performance Evaluation in Surgical Simulation : 9783836486279 : 26 Mar 2008 : One important advantage of computer simulators for surgical training is the opportunity they afford for independent learning. However, without the incoporation of relevant metrics and the presentation of these metrics to the user in such a way so as to provide constructive feedback that facilitates independent learning and improvement, this advantage is significantly reduced by the need for an instructor to supervise and tutor the trainee while using the simulator. This manuscript presents a number of novel metrics for the automated evaluation of surgical technique. Although many of the concepts behind these metrics have application throughout surgery, they have been implemented specifically in the context of a simulation of mastoidectomy, a type of ear surgery. The visuohaptic simulator is described, followed by the details of the metrics implementations. Mechanisms for providing visualization