This mental process, which is not currently completely understood, has captivated the interest of both neuroscientists and computational linguists (Haxby et al., 2001;Ishai et al., 1999;Cree and McRae, 2003;G. Kanwisher et al., 1997;Just et al., 2010).
when a person experiences a visual stimulus of a concept, reads, speaks or writes a word, particular neuronal regions in the brain are activated (Pulvermller, 2001).