Right Hemisphere Activation during Indirect Semantic Priming: Evidence from Event-Related Potentials  

Oleh:

Kiefer, Markus ; Weisbrod, Matthias ; Kern, Isabel ; Maier, Sabine ; Spitzer, Manfred

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 64 no. 3 (1998), page 377-408.
Topik: Semantic priming; right hemisphere semantics; hemispheric specialization; N400; event-related potentials
Fulltext: 64_03_Kiefer.pdf (372.72KB)

Isi artikel

Healthy subjects performed a lexical decision task in a semantic priming paradigm while event-related potentials (ERPs) were recorded from 64 channels. Semantic distance between prime and target was varied by including directly, indirectly, and nonrelated word pairs. At centro-parietal electrodes an N400 to nonrelated pairs was elicited bilaterally which was sensitive only to direct, but not to indirect semantic priming. These N400 priming effects were mirrored by the RT data. At inferior fronto-temporal sites directly related words showed ERP priming effects over both hemispheres. However, indirectly related words only elicited ERP priming effects over the right hemisphere. These results support the hypothesis that the right hemisphere semantic system is involved in processing of remote semantic information.

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