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ERP components reflecting stimulus identification: contrasting the recognition potential and the early repetition
Manuel Martín-Loeches1, Werner Sommer, José A Hinojosa
1Center for Human Evolution and Behavior, UCM-ISCIII, Sinesio Delgado, 4, Pabellón 14, 28029 Madrid, Spain. mmartinloeches@iscii.es
Abstract:
The recognition potential component (RP) in the event-related brain potential (ERP) appears during rapid stream stimulation and has been related to the activation of word form or word meaning. The early repetition effect (ERE/N250r) is observed in repetition priming designs and has been linked to the access to stored representations of the structure of familiar faces and names. Because of the apparent similarities in latency, topography and theoretical interpretation we compared the RP and ERE/N250r within the same rapid stream stimulation design and for the same type of stimulus material: names and faces of famous persons and names and pictures of common objects. Contrasting with RP, the ERE/N250r occurred later and differed in both scalp topography and amplitude patterns across stimulus conditions. Therefore, the ERE/N250r seems to reflect a separate and content-specific stage of information processing, following the RP, which appears to reflect domain-general processes of structural analyses.
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