Gradually, in laboratories around the world, neuroscientists from diverse disciplines are exploring various aspects of brain structure. An undesirable result of the specialization of individual neuroscientists is that it is difficult to fit results together, and some research efforts are duplicated because of lack of sharing of information. We have begun a long-term project to build a neuroscience research database for brain structure. One aspect of the database is the ability to visualize high-quality, high-resolution micrographs montaged together into three-dimensional structures as they were in the living brain. As demonstrated in this papers analysis, realistic presentation of these visualizations across computer networks will stress current and proposed gigabit networks. Image compression can reduce network loads, but wide-spread use of the visualizations will still require networks capable of sustaining terabits/second of throughput. The analysis techniques presented in this paper apply to other applications that can be described with analogous user requirements.