Institution: | New England Complex Systems Institute, 24 Mt. Auburn Street, Cambridge, MA 02138–6042, U.S.A.; Department of Human Communication, University of Electro-Communications, 1–5–1 Chofugaoka, Chofu, Tokyo 182–8585, Japan; Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215–2406, U.S.A. |