For a review see: AUTHOR Baudry, M. TITLE Long-term potentiation : a debate of current issues IMPRINT Cambridge, Mass. : MIT Press, c1991. Hope this helps... -- Dario Dario Ringach office: (212) 998-3941 Center for Neural Science home: (212) 727-3941 New York University e-mail: dario at cns.nyu.edu