An event-related potential study of cross-modal morphological and phonological priming  

Oleh:

Justus, Timothy

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Neurolinguistics (Full Text) vol. 22 no. 6 (2009), page 584–604.
Topik: Morphological priming Phonological priming Past tense Regular and irregular verbs Cross-modal Event-related potentials (ERP) N400 LPC PLAN
Fulltext: Justus_Timothy.pdf (704.36KB)

Isi artikel

The current work investigated whether differences in phonological overlap between the past- and present-tense forms of regular and irregular verbs can account for the graded neurophysiological effects of verb regularity observed in past-tense priming designs. Eventrelated potentials were recorded from 16 healthy participants who performed a lexical-decision task in which past-tense primes immediately preceded present-tense targets. To minimize intra-modal phonological priming effects, cross-modal presentation between auditory primes and visual targets was employed, and results were compared to a companion intra-modal auditory study (Justus, T., Larsen, J., de Mornay Davies, P., Swick, D. (2008). Interpreting dissociations between regular and irregular past-tense morphology: evidence fromevent-related potentials. Cognitive, Affective, Behavioral Neuroscience, 8, 178–194.). For both regular and irregular verbs, faster response times and reduced N400 components were observed for present-tense forms when primed by the corresponding past-tense forms. Although behavioral facilitation was observed with a pseudopast phonological control condition, neither this condition nor an orthographic-phonological control produced significant N400 priming effects. Instead, these two types of priming were associated with a post-lexical anterior negativity (PLAN). Results are discussed with regard to dual- and single-system theories of inflectional morphology, as well as intra- and cross-modal prelexical priming.

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