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  • Title: Pitch accent type affects the N400 during referential processing.
    Author: Schumacher PB, Baumann S.
    Journal: Neuroreport; 2010 Jun 23; 21(9):618-22. PubMed ID: 20489672.
    Abstract:
    Discourse processing depends on semantic memory as well as maintaining and updating of a mental model. Using event-related potentials, we investigated how a referent's information status (new, accessible, given) is processed in combination with three different prosodic realizations (an appropriate accent and two inappropriate accents). The data reveal a biphasic N400-late positivity pattern, indicating that prosodic information affects an early discourse linking stage, during which prominence information reflecting a referent's accessibility is computed (N400), and a later discourse updating stage, during which conflicts between prosodic information and a referent's actual information status are detected (late positivity). Crucially, the data show that the N400 is not only sensitive to lexico-semantic relations but also to discourse accessibility induced by prosodic cues.
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