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An ERP investigation of morpheme transposition in rapid serial visual presentation

International Journal of Psychophysiology, ISSN: 0167-8760, Vol: 182, Page: 159-168
2022
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Article Description

The present study investigated the electrophysiological correlates of morpheme transposition in two-character Chinese compound words (canonical words and transposed words) and pseudowords at a very short stimulus onset asynchrony (SOA) of 83 ms, employing a dual-target rapid serial visual presentation (RSVP) task. Event-related potential (ERP) results showed that, relative to pseudowords, canonical words elicited increased positivity or decreased negativity in ERP amplitudes beginning with the 200–300 ms (P200) and continuing through the 300–450 ms (N400) into the late time window of 450–600 ms (late positive component, LPC). Critically, the morpheme transposition effects were found on the N400 component and LPC, with larger N400 and smaller LPC amplitudes in the transposed words than in the canonical words. Taken together, these results demonstrated that morpheme transposition hindered the semantic extraction and combinatorial processing of the whole word entities in very rapid succession, as reflected by the modulations of N400 and LPC.

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