NIH and many of its institutes, including NEI, are interested in accelerating research on neuronal plasticity and put out a new RFI aimed at the development of tools and resources in that area.
http://grants.nih.gov/grants/guide/notice-files/NOT-MH-07-106.html
http://grants.nih.gov/grants/guide/notice-files/NOT-MH-07-106.html