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キーワード:
Neural basis of behavior, Cognition; Event-related potential; Language processing; Syntactic ambiguity; Spatio-temporal principal component analysis; P600/SPS, P300; ERP Sub-component
要旨:
The present study investigates the processes involved in the recovery from temporarily ambiguous garden-path sentences. Event-related brain potentials (ERP) were recorded while subjects read German subject–object ambiguous relative and complement clauses. As both clause types are initially analyzed as subject-first structures, object-first structures require a revision which is more difficult for complement than for relative clauses. The hypothesis is tested that the revision process consists of two sub-processes, namely diagnosis and actual reanalysis. Applying a spatio-temporal principal component analysis to the ERP data, distinct positive sub-components presumably reflecting different sub-processes could be identified in the time range of the P300 and P600. It will be argued that the P600 is not a monolithic component, and that different subprocesses may be involved at varying time points depending on the type of garden-path sentence.
