This work was supported in part by a grant from the French Ministère de l'Enseignement supérieur, de la Recherche et de la Technologie. We thank Nikoletta Geronikola and Pauline Griesel for their assistance in data acquisition and analysis.
An event-related potential study of predictive and integrative semantic context processing in subjects with schizotypal traits
Article first published online: 28 JUL 2013
Copyright © 2013 Society for Psychophysiological Research
Volume 50, Issue 11, pages 1109–1119, November 2013
How to Cite
de Loye, C., Beaucousin, V., Bohec, A.-L., Blanchet, A. and Kostova, M. (2013), An event-related potential study of predictive and integrative semantic context processing in subjects with schizotypal traits. Psychophysiology, 50: 1109–1119. doi: 10.1111/psyp.12124
- Issue published online: 21 OCT 2013
- Article first published online: 28 JUL 2013
- French Ministère de l'Enseignement supérieur, de la Recherche et de la Technologie
- Context processing;
Context processing abnormalities may explain thought disorder in schizophrenia/schizotypy. This study aimed to assess predictive and integrative context processing in subjects with high or low scores on the Schizotypal Personality Questionnaire (SPQ). The N400 amplitude was recorded during semantic judgment of sentence pairs ending with a lateralized expected or unexpected word from the same or a different category (related and unrelated violation). In both groups, the N400 amplitude was less negative for expected words versus unrelated violations, regardless of which hemisphere received the stimulus, and for related versus unrelated violations, but only for left-hemisphere stimuli. The N400 amplitude for unrelated violations was less negative in subjects with high SPQ scores for both hemispheres. These results indicate that subjects with schizotypal traits use context to predict or integrate congruent words, but fail to inhibit incongruent words.