The introduction of novel technologies in the medical field has enabled the treatment of previously untreatable conditions. However, the introduction of novel technologies in the surgical field has made surgical procedures more sophisticated and specialized and, thus, more complex. Thus, the complexity of surgical procedures owing to their sophistication and specialization requires optimization and efficiency through visualization and the analysis of surgical procedures using surgical processing models (SPMs). This chapter introduces SPMs and surgical process visualization based on their application to awake surgery in gliomas.