摘要：Lexical selection is described as a competitive process during which the correct representation must be selectedfrom competing semantically-related alternatives in order to be produced. Neuropsychological and fMRI evidencehave tied the left inferior frontal gyrus (LIFG) to the resolution of this competition looking notably at the effect ofsemantic context in the semantic blocking task (e.g. Schnur et al., 2009). However, electrophysiological studiessuggest lexical selection, beginning at 200 msecs post-stimulus onset, is associated with many brain regionsdistributed across frontal and posterior regions (e.g. Aristei et al., 2011). Here we investigated the contribution offrontal and posterior cortex to lexical selection using electroencephalography (EEG) in stroke patients with lesionsin either the left or the right prefrontal cortex (PFC) and in neurologically-normal controls.
