Time-course of cognitive processes during proverb reading

BRUNO BIANCHI; DIEGO E. SHALOM; JUAN E. KAMIENKOWSKI

Buenos Aires

Congreso; Congreso de la Federación de Asociaciones Latinoamericanas de Neurociencias; 2016

FALAN

As we read our brain performs a series of processes that allow the recognition of words in different levels of analysis: grapheme decoding, conversion to phonemes, meaning acquisition, context integration, etc. In most of sentence-reading EEG studies, it is proposed that the integration processes occur only at later times, presenting differences in N400 and P600 potentials. However, these times are not consistent with results from eye movements studies, where interaction of context-dependent variables (such as predictability of the word) and the word recognition itself are visible in shorter times (before 300 ms). In the present study we propose to analyze the time-course and the interaction of the context with word recognition in an extreme case such as Proverbs. To achieve this goal, EEG recordings were made on participants during the reading of three types sentences in a word-by-word presentation: Proverbs and high and low predictability Sentences.As expected we found an early impact of the variables associated with word recognition (frequency on the lexicon) and later for integration with the context (predictability). On the other hand, effects of both, sentence type and the word position in the sentence were found, what its not explained only by a predictability effect.