Re-evaluating the Time Course of Gender and Phonological Encoding During Silent Monitoring Tasks Estimated by ERP: Serial or Parallel Processing?  

Oleh:

Camen, Christian ; Morand, Stephanie ; Laganaro, Marina

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Psycholinguistics Research =>ada di SpringerLink 1972(vol.1) - Mutakhir; PROQUEST vol. 39 no. 1 (Feb. 2010), page 35-49.
Topik: Word production · Syntax · Phonology · Time course · ERP · EEG
Fulltext: vol. 39 issue 1 February 2010. p. 35 - 49.pdf (307.6KB)

Isi artikel

Neurolinguistic and psycholinguistic studies suggest that grammatical (gender) and phonological information are retrieved independently and that gender can be accessed before phonological information. This study investigated the relative time courses of gender and phonological encoding using topographic evoked potentials mapping methods. Eventrelated brain potentials (ERPs) were recorded using a high resolution electroencephalogram (EEG) system (128 channels) during gender and phoneme monitoring in silent picture naming. Behavioural results showed similar reaction times (RT) between gender and word onset (first phoneme) monitoring, and longer RT when monitoring the second syllable onset. Temporal segmentation analysis (defining dominant map topographies using cluster analysis) revealed no timing difference between gender monitoring and word onset monitoring: both effects fall within the same time windowat about 270–290ms after picture presentation. Monitoring a second syllable onset generated a later effect at about 480 ms. Direct comparison between gender and first phoneme monitoring revealed a difference of only 10ms between tasks at approximately 200 ms. Taken together, these results suggest that lemma retrieval and phonological encoding may proceed in parallel or overlap. Word onset is retrieved simultaneously with gender, while the longer RT and the later ERP effect for second syllable onset reflect that segmental encoding continues incrementally to the following phonemes.

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