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Ultra-rapid semantic processing of visually presented words| old_uid | 3051 |
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| title | Ultra-rapid semantic processing of visually presented words |
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| start_date | 2007/06/15 |
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| schedule | 11h-12h |
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| online | no |
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| location_info | bt. 9, rdj/ouest-08, salle de cours |
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| summary | I will describe three new approaches to the study of the speed of semantic processing of visually presented words. In one approach, two words of different color are presented eccentrically, and the task is to make a lexical decision on the word of a pre-specified color while ignoring the other word. This approach makes use of the event-related potential methodology to establish a timeline of the interaction between the words meaning. The second approach is based on the rapid serial visual presentation of series of words that are systematically varied so as to generate contexts that are semantically congruent or incongruent. In this approach, the interplay between semantically congruent words and semantically incongruent words is monitored during the time window in which the so-called attentional blink effect usually unfolds. The last approach hinges on the use of the psychological refractory period paradigm, in which two words are presented sequentially, and the functional overlap between the mechanisms responsible for the response to the first word and the mechanisms responsible for the response to the second word is manipulated by varying the temporal asynchrony between the words onset. Interestingly, all three approaches are consistent in showing that semantic processing of visual words has an early locus in the human mental architecture, starting within less than 200 ms from a word onset. |
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| responsibles | Pélissier, Grainger |
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