A method and system for providing consumer-specific communication based on cultural-normalization techniques. The merged chroma buffer, based on improved memory space adjacency versus two separate chroma frame buffers, may reduce the possibility of cache conflicts and improve cache utilization. Because the instrument fixes the position of the tissue, and because the instruments remain at a constant distance from the particular portion of the heart where the surgery is being performed, the device may also serve as a support or platform so that other surgical instruments or devices can be advantageously used at the site.