Text-to-brain literature?
We don't have a well tested or accepted model of how specific items are encoded in the cortex, so text to brain is still far off. However, it is possible to send information to the brain.

Ramirez et al. 2013. Creating a False Memory in the Hippocampus

This study (in mice) involved creating a false sense of fear associated with a particular context. This implanted information is much higher level than just text, but it is still information.