Abstract:
:The purpose of this study was to determine whether the latencies of two event-related potential (ERP) components, the NA and N400, were sensitive to semantic priming. Subjects performed a semantic judgment task, which was designed in such a way that the N400 could be examined without overlap from the P3. Priming effects on the latencies of both NA and N400 were most apparent at frontocentral sites. The amplitude of NA was not significantly affected by priming. The amplitude of N400 was smaller for primed than for unprimed words, but the effect was significant only at centroposterior sites. Current source density (CSD) analyses performed on the ERP data suggested the activation of multiple generators in the N400 time region. The ERP and CSD data were consistent with the existence of two types of N400, a frontal N400 that varies in latency as a function of semantic priming, and a posterior N400 that varies in amplitude.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
Deacon D,Mehta A,Tinsley C,Nousak JMdoi
10.1111/j.1469-8986.1995.tb01232.xsubject
Has Abstractpub_date
1995-11-01 00:00:00pages
560-70issue
6eissn
0048-5772issn
1540-5958journal_volume
32pub_type
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