MIT CogNet, The Brain Sciences ConnectionFrom the MIT Press, Link to Online Catalog
SPARC Communities
Subscriber : Stanford University Libraries » LOG IN

space

Powered By Google 
Advanced Search

 

Event-Related Brain Potentials Indicate Processing Difficulties for Non-Parallel Discourse Structures.

 J. Streb, F. Rosler and E. Hennighausen
  
 

Abstract:
The present study investigated event-related potential (ERP) effects of pronoun and proper name anaphora in both parallel and non-parallel discourse structures. Thirty-seven students processed 400 passages comprising two sentences. The first sentence introduced a protagonist which was refered to by an anaphora in the second sentence. The anaphora could either be a pronoun or a repetition of the proper name of the protagonist and had either the same or a different syntactic role as the antecedent. The sentences were presented word by word as rapid serial visual display. ERPs were recorded from 61 scalp electrodes. In agreement with the parallel function strategy non-parallel discourse structures required longer decision times and higher error rates than parallel structures. The ERPs revealed two effects: First, pronoun anaphora evoked a more pronounced negativity than proper name anaphora between 270 and 420 ms over the frontal cortex and another relative negativity between 500 and 600 ms over the parietal cortex. Second, anaphora in non-parallel positions were accompanied by a more pronounced negativity over the parietal cortex. These data support the idea that anaphora in a non-parallel position trigger extra processing steps to integrate currently encountered information with previously activated representations. Supported by the German Research Foundation (DFG, grant Ro529/12-1).

 
 


© 2010 The MIT Press
MIT Logo