期刊
CEREBRAL CORTEX
卷 19, 期 11, 页码 2659-2670出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhp019
关键词
consonants and vowels; ERPs; letter processing; relative position coding; visual word recognition
资金
- Spanish Ministry of Education and Science [SEJ2006-09238]
- CONSOLIDER-INGENIO [CSD2008-00048]
This paper shows that the nature of letters-consonant versus vowel-modulates the process of letter position assignment during visual word recognition. We recorded Event Related Potentials while participants read words in a masked priming semantic categorization task. Half of the words included a vowel as initial, third, and fifth letters (e.g., acero [steel]). The other half included a consonant as initial, third, and fifth (e.g., farol [lantern]). Targets could be preceded 1) by the initial, third, and fifth letters (relative position; e.g., aeo-acero and frl-farol), 2) by 3 consonants or vowels that did not appear in the target word (control; e.g., iui-acero and tsb-farol), or 3) by the same words (identity: acero-acero, farol-farol). The results showed modulation in 2 time windows (175-250 and 350-450 ms). Relative position primes composed of consonants produced similar effects to the identity condition. These 2 differed from the unrelated control condition, which showed a larger negativity. In contrast, relative position primes composed of vowels produced similar effects to the unrelated control condition, and these 2 showed larger negativities as compared with the identity condition. This finding has important consequences for cracking the orthographic code and developing computational models of visual word recognition.
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