The synaptic scan was an experimental technique developed by Noonian Soong. Synaptic scanning allowed Soong to archive the memories of Juliana Tainer, and to then transfer her "consciousness" into an android body. Soong was not certain that the technique would be successful. When Juliana awoke, however, she fully believed that she was still a Human being. (TNG: "Inheritance" ) That both Soong and Graves used these techniques is perhaps one of the strongest pieces of evidence that Graves was not lying when he referred to himself as Soong's mentor (or at least closely associated with Soong).