FIGURE 2.

Labeling data and its representation in the database. Top left: schematic representation of the outcome of a connection labeling experiment in the ferret brain; top right: corresponding microphotographs of stained sections and labeled neurons; both panels reproduced with permission from Manger et al. (2010). Bottom: Ferretome.org database schema related to the data modality of connection labeling experiments. The central entity of this schema is an injection (linked to a literature table). One connection-tracing report may comprise several injections. Many injections have several outcomes. Every outcome comprises many labeled sites that should be linked to brain sites (cf. Figure 1). All injections are supplied with data about methods, tracers as well as further parameters.