Overlapping Tasks Methodology as a Tool for Investigating Language Perception

摘要: A series of studies is reviewed that investigated the effects additional tasks on N400 component event-related brain potential (ERP) within framework an overlapping paradigm. In all was elicited by words could be either synonymous or nonsynonymous to a preceding word and subtracting ERP from those non-synonymous words. Additional task stimuli were visual presented at high low temporal overlap with The delayed in time when there stimulus. delay more pronounced difficult language-like. Second-language speakers showed very similar interference albeit globally slower level. Somewhat different obtained meaning eliciting irrelevant task. contrast, eye movements visuo-spatial attention shifts had no latency. Together, results indicate N400-eliciting processes – presumably access semantic knowledge belong group central form bottleneck cognitive system because they can handle only one process time. On basis these findings dual-task methodology suggested valuable tool not for investigating supporting language perception and, generally, retrieval but also other processes.