“…Anatomically, hippocampal interneurons are a diverse group; their cell bodies are distributed throughout the layers of Ammon's horn, with widespread, varied dendritic trees and axonal ramifications (Amaral and Wittner, 1995;Freund and Buzsáki, 1996;Klausberger and Somogyi, 2008). Interneurons can be classified on molecular as well as anatomical grounds (McBain and Fisahn, 2001;Klausberger et al, 2003Klausberger et al, , 2004Klausberger et al, , 2005Mott and Dingledine, 2003;Ferraguti et al, 2005;Somogyi and Klausberger, 2005;Baude et al, 2007;Jinno et al, 2007;Tukker et al, 2007;Fuentealba et al, 2008).…”