“…Many models of neurons have already been implemented in silicon (Mead, 1989;Mahowald & Douglas, 1991;van Schaik, 2001;Hynna & Boahen, 2001;Indiveri, 2003;Alvado et al, 2004;Simoni, Cymbalyuk, Sorensen, Calabrese, & DeWeerth, 2004;Schemmel, Meier, & Mueller, 2004;Arthur & Boahen, 2004Farquhar & Hasler, 2005;Hynna & Boahen, 2006;Wijekoon & Dudek, 2008;Livi & Indiveri, 2009;Yu & Cauwenberghs, 2009;Rastogi, Garg, & Harris, 2009;Massoud & Horiuchi, 2009;Folowosele, Etienne-Cummings, & Hamilton, 2009). Depending on the complexity of the neuron model, the VLSI neuron may require relatively large areas of silicon.…”